diff options
author | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-03 18:17:47 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-03 18:17:47 -0800 |
commit | 89a2fa5f2139be35e214bcf86a8291d6a1da75f2 (patch) | |
tree | 850ea412b013360bcace751db91cac6fb0067535 /drivers | |
parent | 27266a18dc56611e2f2ec4e8aced0fe221e9b4b8 (diff) | |
parent | 68ee3eb8295c9c164071fcbd367c419121bd55f8 (diff) |
Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/parisc/ccio-dma.c | 7 | ||||
-rw-r--r-- | drivers/parisc/dino.c | 4 | ||||
-rw-r--r-- | drivers/parisc/hppb.c | 3 | ||||
-rw-r--r-- | drivers/parisc/iosapic.c | 8 | ||||
-rw-r--r-- | drivers/parisc/lasi.c | 5 | ||||
-rw-r--r-- | drivers/parisc/lba_pci.c | 6 | ||||
-rw-r--r-- | drivers/parisc/pdc_stable.c | 356 | ||||
-rw-r--r-- | drivers/parisc/sba_iommu.c | 3 | ||||
-rw-r--r-- | drivers/parisc/superio.c | 41 | ||||
-rw-r--r-- | drivers/parisc/wax.c | 2 | ||||
-rw-r--r-- | drivers/parport/parport_gsc.c | 2 | ||||
-rw-r--r-- | drivers/video/console/sticore.c | 45 |
12 files changed, 318 insertions, 164 deletions
diff --git a/drivers/parisc/ccio-dma.c b/drivers/parisc/ccio-dma.c index 9e0229f7e25..f46e8438e0d 100644 --- a/drivers/parisc/ccio-dma.c +++ b/drivers/parisc/ccio-dma.c @@ -1423,7 +1423,7 @@ static void __init ccio_init_resources(struct ioc *ioc) struct resource *res = ioc->mmio_region; char *name = kmalloc(14, GFP_KERNEL); - sprintf(name, "GSC Bus [%d/]", ioc->hw_path); + snprintf(name, 14, "GSC Bus [%d/]", ioc->hw_path); ccio_init_resource(res, name, &ioc->ioc_regs->io_io_low); ccio_init_resource(res + 1, name, &ioc->ioc_regs->io_io_low_hv); @@ -1557,12 +1557,11 @@ static int ccio_probe(struct parisc_device *dev) int i; struct ioc *ioc, **ioc_p = &ioc_list; - ioc = kmalloc(sizeof(struct ioc), GFP_KERNEL); + ioc = kzalloc(sizeof(struct ioc), GFP_KERNEL); if (ioc == NULL) { printk(KERN_ERR MODULE_NAME ": memory allocation failure\n"); return 1; } - memset(ioc, 0, sizeof(struct ioc)); ioc->name = dev->id.hversion == U2_IOA_RUNWAY ? "U2" : "UTurn"; @@ -1578,7 +1577,7 @@ static int ccio_probe(struct parisc_device *dev) ccio_ioc_init(ioc); ccio_init_resources(ioc); hppa_dma_ops = &ccio_ops; - dev->dev.platform_data = kmalloc(sizeof(struct pci_hba_data), GFP_KERNEL); + dev->dev.platform_data = kzalloc(sizeof(struct pci_hba_data), GFP_KERNEL); /* if this fails, no I/O cards will work, so may as well bug */ BUG_ON(dev->dev.platform_data == NULL); diff --git a/drivers/parisc/dino.c b/drivers/parisc/dino.c index 216d1d85932..3d1a7f98c67 100644 --- a/drivers/parisc/dino.c +++ b/drivers/parisc/dino.c @@ -989,14 +989,12 @@ static int __init dino_probe(struct parisc_device *dev) */ } - dino_dev = kmalloc(sizeof(struct dino_device), GFP_KERNEL); + dino_dev = kzalloc(sizeof(struct dino_device), GFP_KERNEL); if (!dino_dev) { printk("dino_init_chip - couldn't alloc dino_device\n"); return 1; } - memset(dino_dev, 0, sizeof(struct dino_device)); - dino_dev->hba.dev = dev; dino_dev->hba.base_addr = ioremap(hpa, 4096); dino_dev->hba.lmmio_space_offset = 0; /* CPU addrs == bus addrs */ diff --git a/drivers/parisc/hppb.c b/drivers/parisc/hppb.c index 5edf93f8075..07dc2b6d4e9 100644 --- a/drivers/parisc/hppb.c +++ b/drivers/parisc/hppb.c @@ -60,12 +60,11 @@ static int hppb_probe(struct parisc_device *dev) } if(card->hpa) { - card->next = kmalloc(sizeof(struct hppb_card), GFP_KERNEL); + card->next = kzalloc(sizeof(struct hppb_card), GFP_KERNEL); if(!card->next) { printk(KERN_ERR "HP-PB: Unable to allocate memory.\n"); return 1; } - memset(card->next, '\0', sizeof(struct hppb_card)); card = card->next; } printk(KERN_INFO "Found GeckoBoa at 0x%lx\n", dev->hpa.start); diff --git a/drivers/parisc/iosapic.c b/drivers/parisc/iosapic.c index 19657efa8dc..8d7a36392eb 100644 --- a/drivers/parisc/iosapic.c +++ b/drivers/parisc/iosapic.c @@ -873,28 +873,24 @@ void *iosapic_register(unsigned long hpa) return NULL; } - isi = (struct iosapic_info *)kmalloc(sizeof(struct iosapic_info), GFP_KERNEL); + isi = (struct iosapic_info *)kzalloc(sizeof(struct iosapic_info), GFP_KERNEL); if (!isi) { BUG(); return NULL; } - memset(isi, 0, sizeof(struct iosapic_info)); - isi->addr = ioremap(hpa, 4096); isi->isi_hpa = hpa; isi->isi_version = iosapic_rd_version(isi); isi->isi_num_vectors = IOSAPIC_IRDT_MAX_ENTRY(isi->isi_version) + 1; vip = isi->isi_vector = (struct vector_info *) - kmalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL); + kzalloc(sizeof(struct vector_info) * isi->isi_num_vectors, GFP_KERNEL); if (vip == NULL) { kfree(isi); return NULL; } - memset(vip, 0, sizeof(struct vector_info) * isi->isi_num_vectors); - for (cnt=0; cnt < isi->isi_num_vectors; cnt++, vip++) { vip->irqline = (unsigned char) cnt; vip->iosapic = isi; diff --git a/drivers/parisc/lasi.c b/drivers/parisc/lasi.c index 2b3ba1dcf33..cb3d2817612 100644 --- a/drivers/parisc/lasi.c +++ b/drivers/parisc/lasi.c @@ -166,11 +166,12 @@ static void lasi_power_off(void) int __init lasi_init_chip(struct parisc_device *dev) { + extern void (*chassis_power_off)(void); struct gsc_asic *lasi; struct gsc_irq gsc_irq; int ret; - lasi = kmalloc(sizeof(*lasi), GFP_KERNEL); + lasi = kzalloc(sizeof(*lasi), GFP_KERNEL); if (!lasi) return -ENOMEM; @@ -222,7 +223,7 @@ lasi_init_chip(struct parisc_device *dev) * ensure that only the first LASI (the one controlling the power off) * should set the HPA here */ lasi_power_off_hpa = lasi->hpa; - pm_power_off = lasi_power_off; + chassis_power_off = lasi_power_off; return ret; } diff --git a/drivers/parisc/lba_pci.c b/drivers/parisc/lba_pci.c index cbae8c8963f..e8a2a4a852f 100644 --- a/drivers/parisc/lba_pci.c +++ b/drivers/parisc/lba_pci.c @@ -1565,7 +1565,7 @@ lba_driver_probe(struct parisc_device *dev) } else if (IS_MERCURY(dev) || IS_QUICKSILVER(dev)) { func_class &= 0xff; version = kmalloc(6, GFP_KERNEL); - sprintf(version,"TR%d.%d",(func_class >> 4),(func_class & 0xf)); + snprintf(version, 6, "TR%d.%d",(func_class >> 4),(func_class & 0xf)); /* We could use one printk for both Elroy and Mercury, * but for the mask for func_class. */ @@ -1586,14 +1586,12 @@ lba_driver_probe(struct parisc_device *dev) ** have an IRT entry will get NULL back from iosapic code. */ - lba_dev = kmalloc(sizeof(struct lba_device), GFP_KERNEL); + lba_dev = kzalloc(sizeof(struct lba_device), GFP_KERNEL); if (!lba_dev) { printk(KERN_ERR "lba_init_chip - couldn't alloc lba_device\n"); return(1); } - memset(lba_dev, 0, sizeof(struct lba_device)); - /* ---------- First : initialize data we already have --------- */ diff --git a/drivers/parisc/pdc_stable.c b/drivers/parisc/pdc_stable.c index 42a3c54e8e6..a28e17898fb 100644 --- a/drivers/parisc/pdc_stable.c +++ b/drivers/parisc/pdc_stable.c @@ -1,7 +1,7 @@ /* * Interfaces to retrieve and set PDC Stable options (firmware) * - * Copyright (C) 2005 Thibaut VARENE <varenet@parisc-linux.org> + * Copyright (C) 2005-2006 Thibaut VARENE <varenet@parisc-linux.org> * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by @@ -26,11 +26,19 @@ * * Since locations between 96 and 192 are the various paths, most (if not * all) PA-RISC machines should have them. Anyway, for safety reasons, the - * following code can deal with only 96 bytes of Stable Storage, and all + * following code can deal with just 96 bytes of Stable Storage, and all * sizes between 96 and 192 bytes (provided they are multiple of struct * device_path size, eg: 128, 160 and 192) to provide full information. * The code makes no use of data above 192 bytes. One last word: there's one * path we can always count on: the primary path. + * + * The current policy wrt file permissions is: + * - write: root only + * - read: (reading triggers PDC calls) ? root only : everyone + * The rationale is that PDC calls could hog (DoS) the machine. + * + * TODO: + * - timer/fastsize write calls */ #undef PDCS_DEBUG @@ -50,13 +58,15 @@ #include <linux/kobject.h> #include <linux/device.h> #include <linux/errno.h> +#include <linux/spinlock.h> #include <asm/pdc.h> #include <asm/page.h> #include <asm/uaccess.h> #include <asm/hardware.h> -#define PDCS_VERSION "0.10" +#define PDCS_VERSION "0.22" +#define PDCS_PREFIX "PDC Stable Storage" #define PDCS_ADDR_PPRI 0x00 #define PDCS_ADDR_OSID 0x40 @@ -70,10 +80,12 @@ MODULE_DESCRIPTION("sysfs interface to HP PDC Stable Storage data"); MODULE_LICENSE("GPL"); MODULE_VERSION(PDCS_VERSION); +/* holds Stable Storage size. Initialized once and for all, no lock needed */ static unsigned long pdcs_size __read_mostly; /* This struct defines what we need to deal with a parisc pdc path entry */ struct pdcspath_entry { + rwlock_t rw_lock; /* to protect path entry access */ short ready; /* entry record is valid if != 0 */ unsigned long addr; /* entry address in stable storage */ char *name; /* entry name */ @@ -121,6 +133,8 @@ struct pdcspath_attribute paths_attr_##_name = { \ * content of the stable storage WRT various paths in these structs. We read * these structs when reading the files, and we will write to these structs when * writing to the files, and only then write them back to the Stable Storage. + * + * This function expects to be called with @entry->rw_lock write-hold. */ static int pdcspath_fetch(struct pdcspath_entry *entry) @@ -160,14 +174,15 @@ pdcspath_fetch(struct pdcspath_entry *entry) * pointer, from which it'll find out the corresponding hardware path. * For now we do not handle the case where there's an error in writing to the * Stable Storage area, so you'd better not mess up the data :P + * + * This function expects to be called with @entry->rw_lock write-hold. */ -static int +static void pdcspath_store(struct pdcspath_entry *entry) { struct device_path *devpath; - if (!entry) - return -EINVAL; + BUG_ON(!entry); devpath = &entry->devpath; @@ -176,10 +191,8 @@ pdcspath_store(struct pdcspath_entry *entry) First case, we don't have a preset hwpath... */ if (!entry->ready) { /* ...but we have a device, map it */ - if (entry->dev) - device_to_hwpath(entry->dev, (struct hardware_path *)devpath); - else - return -EINVAL; + BUG_ON(!entry->dev); + device_to_hwpath(entry->dev, (struct hardware_path *)devpath); } /* else, we expect the provided hwpath to be valid. */ @@ -191,15 +204,13 @@ pdcspath_store(struct pdcspath_entry *entry) printk(KERN_ERR "%s: an error occured when writing to PDC.\n" "It is likely that the Stable Storage data has been corrupted.\n" "Please check it carefully upon next reboot.\n", __func__); - return -EIO; + WARN_ON(1); } /* kobject is already registered */ entry->ready = 2; DPRINTK("%s: device: 0x%p\n", __func__, entry->dev); - - return 0; } /** @@ -214,14 +225,17 @@ pdcspath_hwpath_read(struct pdcspath_entry *entry, char *buf) { char *out = buf; struct device_path *devpath; - unsigned short i; + short i; if (!entry || !buf) return -EINVAL; + read_lock(&entry->rw_lock); devpath = &entry->devpath; + i = entry->ready; + read_unlock(&entry->rw_lock); - if (!entry->ready) + if (!i) /* entry is not ready */ return -ENODATA; for (i = 0; i < 6; i++) { @@ -242,7 +256,7 @@ pdcspath_hwpath_read(struct pdcspath_entry *entry, char *buf) * * We will call this function to change the current hardware path. * Hardware paths are to be given '/'-delimited, without brackets. - * We take care to make sure that the provided path actually maps to an existing + * We make sure that the provided path actually maps to an existing * device, BUT nothing would prevent some foolish user to set the path to some * PCI bridge or even a CPU... * A better work around would be to make sure we are at the end of a device tree @@ -298,17 +312,19 @@ pdcspath_hwpath_write(struct pdcspath_entry *entry, const char *buf, size_t coun } /* So far so good, let's get in deep */ + write_lock(&entry->rw_lock); entry->ready = 0; entry->dev = dev; /* Now, dive in. Write back to the hardware */ - WARN_ON(pdcspath_store(entry)); /* this warn should *NEVER* happen */ + pdcspath_store(entry); /* Update the symlink to the real device */ sysfs_remove_link(&entry->kobj, "device"); sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device"); + write_unlock(&entry->rw_lock); - printk(KERN_INFO "PDC Stable Storage: changed \"%s\" path to \"%s\"\n", + printk(KERN_INFO PDCS_PREFIX ": changed \"%s\" path to \"%s\"\n", entry->name, buf); return count; @@ -326,14 +342,17 @@ pdcspath_layer_read(struct pdcspath_entry *entry, char *buf) { char *out = buf; struct device_path *devpath; - unsigned short i; + short i; if (!entry || !buf) return -EINVAL; + read_lock(&entry->rw_lock); devpath = &entry->devpath; + i = entry->ready; + read_unlock(&entry->rw_lock); - if (!entry->ready) + if (!i) /* entry is not ready */ return -ENODATA; for (i = 0; devpath->layers[i] && (likely(i < 6)); i++) @@ -388,15 +407,17 @@ pdcspath_layer_write(struct pdcspath_entry *entry, const char *buf, size_t count } /* So far so good, let's get in deep */ + write_lock(&entry->rw_lock); /* First, overwrite the current layers with the new ones, not touching the hardware path. */ memcpy(&entry->devpath.layers, &layers, sizeof(layers)); /* Now, dive in. Write back to the hardware */ - WARN_ON(pdcspath_store(entry)); /* this warn should *NEVER* happen */ + pdcspath_store(entry); + write_unlock(&entry->rw_lock); - printk(KERN_INFO "PDC Stable Storage: changed \"%s\" layers to \"%s\"\n", + printk(KERN_INFO PDCS_PREFIX ": changed \"%s\" layers to \"%s\"\n", entry->name, buf); return count; @@ -415,9 +436,6 @@ pdcspath_attr_show(struct kobject *kobj, struct attribute *attr, char *buf) struct pdcspath_attribute *pdcs_attr = to_pdcspath_attribute(attr); ssize_t ret = 0; - if (!capable(CAP_SYS_ADMIN)) - return -EACCES; - if (pdcs_attr->show) ret = pdcs_attr->show(entry, buf); @@ -454,8 +472,8 @@ static struct sysfs_ops pdcspath_attr_ops = { }; /* These are the two attributes of any PDC path. */ -static PATHS_ATTR(hwpath, 0600, pdcspath_hwpath_read, pdcspath_hwpath_write); -static PATHS_ATTR(layer, 0600, pdcspath_layer_read, pdcspath_layer_write); +static PATHS_ATTR(hwpath, 0644, pdcspath_hwpath_read, pdcspath_hwpath_write); +static PATHS_ATTR(layer, 0644, pdcspath_layer_read, pdcspath_layer_write); static struct attribute *paths_subsys_attrs[] = { &paths_attr_hwpath.attr, @@ -484,36 +502,119 @@ static struct pdcspath_entry *pdcspath_entries[] = { NULL, }; + +/* For more insight of what's going on here, refer to PDC Procedures doc, + * Section PDC_STABLE */ + /** - * pdcs_info_read - Pretty printing of the remaining useful data. + * pdcs_size_read - Stable Storage size output. * @entry: An allocated and populated subsytem struct. We don't use it tho. * @buf: The output buffer to write to. - * - * We will call this function to format the output of the 'info' attribute file. - * Please refer to PDC Procedures documentation, section PDC_STABLE to get a - * better insight of what we're doing here. */ static ssize_t -pdcs_info_read(struct subsystem *entry, char *buf) +pdcs_size_read(struct subsystem *entry, char *buf) { char *out = buf; - __u32 result; - struct device_path devpath; - char *tmpstr = NULL; if (!entry || !buf) return -EINVAL; /* show the size of the stable storage */ - out += sprintf(out, "Stable Storage size: %ld bytes\n", pdcs_size); + out += sprintf(out, "%ld\n", pdcs_size); - /* deal with flags */ - if (pdc_stable_read(PDCS_ADDR_PPRI, &devpath, sizeof(devpath)) != PDC_OK) - return -EIO; + return out - buf; +} + +/** + * pdcs_auto_read - Stable Storage autoboot/search flag output. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag + */ +static ssize_t +pdcs_auto_read(struct subsystem *entry, char *buf, int knob) +{ + char *out = buf; + struct pdcspath_entry *pathentry; - out += sprintf(out, "Autoboot: %s\n", (devpath.flags & PF_AUTOBOOT) ? "On" : "Off"); - out += sprintf(out, "Autosearch: %s\n", (devpath.flags & PF_AUTOSEARCH) ? "On" : "Off"); - out += sprintf(out, "Timer: %u s\n", (devpath.flags & PF_TIMER) ? (1 << (devpath.flags & PF_TIMER)) : 0); + if (!entry || !buf) + return -EINVAL; + + /* Current flags are stored in primary boot path entry */ + pathentry = &pdcspath_entry_primary; + + read_lock(&pathentry->rw_lock); + out += sprintf(out, "%s\n", (pathentry->devpath.flags & knob) ? + "On" : "Off"); + read_unlock(&pathentry->rw_lock); + + return out - buf; +} + +/** + * pdcs_autoboot_read - Stable Storage autoboot flag output. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + */ +static inline ssize_t +pdcs_autoboot_read(struct subsystem *entry, char *buf) +{ + return pdcs_auto_read(entry, buf, PF_AUTOBOOT); +} + +/** + * pdcs_autosearch_read - Stable Storage autoboot flag output. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + */ +static inline ssize_t +pdcs_autosearch_read(struct subsystem *entry, char *buf) +{ + return pdcs_auto_read(entry, buf, PF_AUTOSEARCH); +} + +/** + * pdcs_timer_read - Stable Storage timer count output (in seconds). + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + * + * The value of the timer field correponds to a number of seconds in powers of 2. + */ +static ssize_t +pdcs_timer_read(struct subsystem *entry, char *buf) +{ + char *out = buf; + struct pdcspath_entry *pathentry; + + if (!entry || !buf) + return -EINVAL; + + /* Current flags are stored in primary boot path entry */ + pathentry = &pdcspath_entry_primary; + + /* print the timer value in seconds */ + read_lock(&pathentry->rw_lock); + out += sprintf(out, "%u\n", (pathentry->devpath.flags & PF_TIMER) ? + (1 << (pathentry->devpath.flags & PF_TIMER)) : 0); + read_unlock(&pathentry->rw_lock); + + return out - buf; +} + +/** + * pdcs_osid_read - Stable Storage OS ID register output. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + */ +static ssize_t +pdcs_osid_read(struct subsystem *entry, char *buf) +{ + char *out = buf; + __u32 result; + char *tmpstr = NULL; + + if (!entry || !buf) + return -EINVAL; /* get OSID */ if (pdc_stable_read(PDCS_ADDR_OSID, &result, sizeof(result)) != PDC_OK) @@ -529,13 +630,31 @@ pdcs_info_read(struct subsystem *entry, char *buf) case 0x0005: tmpstr = "Novell Netware dependent data"; break; default: tmpstr = "Unknown"; break; } - out += sprintf(out, "OS ID: %s (0x%.4x)\n", tmpstr, (result >> 16)); + out += sprintf(out, "%s (0x%.4x)\n", tmpstr, (result >> 16)); + + return out - buf; +} + +/** + * pdcs_fastsize_read - Stable Storage FastSize register output. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The output buffer to write to. + * + * This register holds the amount of system RAM to be tested during boot sequence. + */ +static ssize_t +pdcs_fastsize_read(struct subsystem *entry, char *buf) +{ + char *out = buf; + __u32 result; + + if (!entry || !buf) + return -EINVAL; /* get fast-size */ if (pdc_stable_read(PDCS_ADDR_FSIZ, &result, sizeof(result)) != PDC_OK) return -EIO; - out += sprintf(out, "Memory tested: "); if ((result & 0x0F) < 0x0E) out += sprintf(out, "%d kB", (1<<(result & 0x0F))*256); else @@ -546,22 +665,18 @@ pdcs_info_read(struct subsystem *entry, char *buf) } /** - * pdcs_info_write - This function handles boot flag modifying. + * pdcs_auto_write - This function handles autoboot/search flag modifying. * @entry: An allocated and populated subsytem struct. We don't use it tho. * @buf: The input buffer to read from. * @count: The number of bytes to be read. + * @knob: The PF_AUTOBOOT or PF_AUTOSEARCH flag * - * We will call this function to change the current boot flags. + * We will call this function to change the current autoboot flag. * We expect a precise syntax: - * \"n n\" (n == 0 or 1) to toggle respectively AutoBoot and AutoSearch - * - * As of now there is no incentive on my side to provide more "knobs" to that - * interface, since modifying the rest of the data is pretty meaningless when - * the machine is running and for the expected use of that facility, such as - * PALO setting up the boot disk when installing a Linux distribution... + * \"n\" (n == 0 or 1) to toggle AutoBoot Off or On */ static ssize_t -pdcs_info_write(struct subsystem *entry, const char *buf, size_t count) +pdcs_auto_write(struct subsystem *entry, const char *buf, size_t count, int knob) { struct pdcspath_entry *pathentry; unsigned char flags; @@ -582,7 +697,9 @@ pdcs_info_write(struct subsystem *entry, const char *buf, size_t count) pathentry = &pdcspath_entry_primary; /* Be nice to the existing flag record */ + read_lock(&pathentry->rw_lock); flags = pathentry->devpath.flags; + read_unlock(&pathentry->rw_lock); DPRINTK("%s: flags before: 0x%X\n", __func__, flags); @@ -595,50 +712,85 @@ pdcs_info_write(struct subsystem *entry, const char *buf, size_t count) if ((c != 0) && (c != 1)) goto parse_error; if (c == 0) - flags &= ~PF_AUTOBOOT; + flags &= ~knob; else - flags |= PF_AUTOBOOT; - - if (*temp++ != ' ') - goto parse_error; - - c = *temp++ - '0'; - if ((c != 0) && (c != 1)) - goto parse_error; - if (c == 0) - flags &= ~PF_AUTOSEARCH; - else - flags |= PF_AUTOSEARCH; + flags |= knob; DPRINTK("%s: flags after: 0x%X\n", __func__, flags); /* So far so good, let's get in deep */ + write_lock(&pathentry->rw_lock); /* Change the path entry flags first */ pathentry->devpath.flags = flags; /* Now, dive in. Write back to the hardware */ - WARN_ON(pdcspath_store(pathentry)); /* this warn should *NEVER* happen */ + pdcspath_store(pathentry); + write_unlock(&pathentry->rw_lock); - printk(KERN_INFO "PDC Stable Storage: changed flags to \"%s\"\n", buf); + printk(KERN_INFO PDCS_PREFIX ": changed \"%s\" to \"%s\"\n", + (knob & PF_AUTOBOOT) ? "autoboot" : "autosearch", + (flags & knob) ? "On" : "Off"); return count; parse_error: - printk(KERN_WARNING "%s: Parse error: expect \"n n\" (n == 0 or 1) for AB and AS\n", __func__); + printk(KERN_WARNING "%s: Parse error: expect \"n\" (n == 0 or 1)\n", __func__); return -EINVAL; } -/* The last attribute (the 'root' one actually) with all remaining data. */ -static PDCS_ATTR(info, 0600, pdcs_info_read, pdcs_info_write); +/** + * pdcs_autoboot_write - This function handles autoboot flag modifying. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The input buffer to read from. + * @count: The number of bytes to be read. + * + * We will call this function to change the current boot flags. + * We expect a precise syntax: + * \"n\" (n == 0 or 1) to toggle AutoSearch Off or On + */ +static inline ssize_t +pdcs_autoboot_write(struct subsystem *entry, const char *buf, size_t count) +{ + return pdcs_auto_write(entry, buf, count, PF_AUTOBOOT); +} + +/** + * pdcs_autosearch_write - This function handles autosearch flag modifying. + * @entry: An allocated and populated subsytem struct. We don't use it tho. + * @buf: The input buffer to read from. + * @count: The number of bytes to be read. + * + * We will call this function to change the current boot flags. + * We expect a precise syntax: + * \"n\" (n == 0 or 1) to toggle AutoSearch Off or On + */ +static inline ssize_t +pdcs_autosearch_write(struct subsystem *entry, const char *buf, size_t count) +{ + return pdcs_auto_write(entry, buf, count, PF_AUTOSEARCH); +} + +/* The remaining attributes. */ +static PDCS_ATTR(size, 0444, pdcs_size_read, NULL); +static PDCS_ATTR(autoboot, 0644, pdcs_autoboot_read, pdcs_autoboot_write); +static PDCS_ATTR(autosearch, 0644, pdcs_autosearch_read, pdcs_autosearch_write); +static PDCS_ATTR(timer, 0444, pdcs_timer_read, NULL); +static PDCS_ATTR(osid, 0400, pdcs_osid_read, NULL); +static PDCS_ATTR(fastsize, 0400, pdcs_fastsize_read, NULL); static struct subsys_attribute *pdcs_subsys_attrs[] = { - &pdcs_attr_info, - NULL, /* maybe more in the future? */ + &pdcs_attr_size, + &pdcs_attr_autoboot, + &pdcs_attr_autosearch, + &pdcs_attr_timer, + &pdcs_attr_osid, + &pdcs_attr_fastsize, + NULL, }; static decl_subsys(paths, &ktype_pdcspath, NULL); -static decl_subsys(pdc, NULL, NULL); +static decl_subsys(stable, NULL, NULL); /** * pdcs_register_pathentries - Prepares path entries kobjects for sysfs usage. @@ -656,8 +808,16 @@ pdcs_register_pathentries(void) struct pdcspath_entry *entry; int err; + /* Initialize the entries rw_lock before anything else */ + for (i = 0; (entry = pdcspath_entries[i]); i++) + rwlock_init(&entry->rw_lock); + for (i = 0; (entry = pdcspath_entries[i]); i++) { - if (pdcspath_fetch(entry) < 0) + write_lock(&entry->rw_lock); + err = pdcspath_fetch(entry); + write_unlock(&entry->rw_lock); + + if (err < 0) continue; if ((err = kobject_set_name(&entry->kobj, "%s", entry->name))) @@ -667,13 +827,14 @@ pdcs_register_pathentries(void) return err; /* kobject is now registered */ + write_lock(&entry->rw_lock); entry->ready = 2; - if (!entry->dev) - continue; - /* Add a nice symlink to the real device */ - sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device"); + if (entry->dev) + sysfs_create_link(&entry->kobj, &entry->dev->kobj, "device"); + + write_unlock(&entry->rw_lock); } return 0; @@ -688,14 +849,17 @@ pdcs_unregister_pathentries(void) unsigned short i; struct pdcspath_entry *entry; - for (i = 0; (entry = pdcspath_entries[i]); i++) + for (i = 0; (entry = pdcspath_entries[i]); i++) { + read_lock(&entry->rw_lock); if (entry->ready >= 2) - kobject_unregister(&entry->kobj); + kobject_unregister(&entry->kobj); + read_unlock(&entry->rw_lock); + } } /* - * For now we register the pdc subsystem with the firmware subsystem - * and the paths subsystem with the pdc subsystem + * For now we register the stable subsystem with the firmware subsystem + * and the paths subsystem with the stable subsystem */ static int __init pdc_stable_init(void) @@ -707,19 +871,23 @@ pdc_stable_init(void) if (pdc_stable_get_size(&pdcs_size) != PDC_OK) return -ENODEV; - printk(KERN_INFO "PDC Stable Storage facility v%s\n", PDCS_VERSION); + /* make sure we have enough data */ + if (pdcs_size < 96) + return -ENODATA; + + printk(KERN_INFO PDCS_PREFIX " facility v%s\n", PDCS_VERSION); - /* For now we'll register the pdc subsys within this driver */ - if ((rc = firmware_register(&pdc_subsys))) + /* For now we'll register the stable subsys within this driver */ + if ((rc = firmware_register(&stable_subsys))) goto fail_firmreg; - /* Don't forget the info entry */ + /* Don't forget the root entries */ for (i = 0; (attr = pdcs_subsys_attrs[i]) && !error; i++) if (attr->show) - error = subsys_create_file(&pdc_subsys, attr); + error = subsys_create_file(&stable_subsys, attr); - /* register the paths subsys as a subsystem of pdc subsys */ - kset_set_kset_s(&paths_subsys, pdc_subsys); + /* register the paths subsys as a subsystem of stable subsys */ + kset_set_kset_s(&paths_subsys, stable_subsys); if ((rc= subsystem_register(&paths_subsys))) goto fail_subsysreg; @@ -734,10 +902,10 @@ fail_pdcsreg: subsystem_unregister(&paths_subsys); fail_subsysreg: - firmware_unregister(&pdc_subsys); + firmware_unregister(&stable_subsys); fail_firmreg: - printk(KERN_INFO "PDC Stable Storage bailing out\n"); + printk(KERN_INFO PDCS_PREFIX " bailing out\n"); return rc; } @@ -747,7 +915,7 @@ pdc_stable_exit(void) pdcs_unregister_pathentries(); subsystem_unregister(&paths_subsys); - firmware_unregister(&pdc_subsys); + firmware_unregister(&stable_subsys); } diff --git a/drivers/parisc/sba_iommu.c b/drivers/parisc/sba_iommu.c index c85653f315a..52f265e9772 100644 --- a/drivers/parisc/sba_iommu.c +++ b/drivers/parisc/sba_iommu.c @@ -2064,14 +2064,13 @@ sba_driver_callback(struct parisc_device *dev) printk(KERN_INFO "%s found %s at 0x%lx\n", MODULE_NAME, version, dev->hpa.start); - sba_dev = kmalloc(sizeof(struct sba_device), GFP_KERNEL); + sba_dev = kzalloc(sizeof(struct sba_device), GFP_KERNEL); if (!sba_dev) { printk(KERN_ERR MODULE_NAME " - couldn't alloc sba_device\n"); return -ENOMEM; } parisc_set_drvdata(dev, sba_dev); - memset(sba_dev, 0, sizeof(struct sba_device)); for(i=0; i<MAX_IOC; i++) spin_lock_init(&(sba_dev->ioc[i].res_lock)); diff --git a/drivers/parisc/superio.c b/drivers/parisc/superio.c index d14888e149b..ba971fecd0d 100644 --- a/drivers/parisc/superio.c +++ b/drivers/parisc/superio.c @@ -89,6 +89,9 @@ static struct superio_device sio_dev; #define DBG_INIT(x...) #endif +#define SUPERIO "SuperIO" +#define PFX SUPERIO ": " + static irqreturn_t superio_interrupt(int parent_irq, void *devp, struct pt_regs *regs) { @@ -117,7 +120,7 @@ superio_interrupt(int parent_irq, void *devp, struct pt_regs *regs) local_irq = results & 0x0f; if (local_irq == 2 || local_irq > 7) { - printk(KERN_ERR "SuperIO: slave interrupted!\n"); + printk(KERN_ERR PFX "slave interrupted!\n"); return IRQ_HANDLED; } @@ -128,7 +131,7 @@ superio_interrupt(int parent_irq, void *devp, struct pt_regs *regs) outb(OCW3_ISR,IC_PIC1+0); results = inb(IC_PIC1+0); if ((results & 0x80) == 0) { /* if ISR7 not set: spurious */ - printk(KERN_WARNING "SuperIO: spurious interrupt!\n"); + printk(KERN_WARNING PFX "spurious interrupt!\n"); return IRQ_HANDLED; } } @@ -163,27 +166,27 @@ superio_init(struct pci_dev *pcidev) /* ...then properly fixup the USB to point at suckyio PIC */ sio->usb_pdev->irq = superio_fixup_irq(sio->usb_pdev); - printk(KERN_INFO "SuperIO: Found NS87560 Legacy I/O device at %s (IRQ %i) \n", + printk(KERN_INFO PFX "Found NS87560 Legacy I/O device at %s (IRQ %i) \n", pci_name(pdev), pdev->irq); pci_read_config_dword (pdev, SIO_SP1BAR, &sio->sp1_base); sio->sp1_base &= ~1; - printk (KERN_INFO "SuperIO: Serial port 1 at 0x%x\n", sio->sp1_base); + printk(KERN_INFO PFX "Serial port 1 at 0x%x\n", sio->sp1_base); pci_read_config_dword (pdev, SIO_SP2BAR, &sio->sp2_base); sio->sp2_base &= ~1; - printk (KERN_INFO "SuperIO: Serial port 2 at 0x%x\n", sio->sp2_base); + printk(KERN_INFO PFX "Serial port 2 at 0x%x\n", sio->sp2_base); pci_read_config_dword (pdev, SIO_PPBAR, &sio->pp_base); sio->pp_base &= ~1; - printk (KERN_INFO "SuperIO: Parallel port at 0x%x\n", sio->pp_base); + printk(KERN_INFO PFX "Parallel port at 0x%x\n", sio->pp_base); pci_read_config_dword (pdev, SIO_FDCBAR, &sio->fdc_base); sio->fdc_base &= ~1; - printk (KERN_INFO "SuperIO: Floppy controller at 0x%x\n", sio->fdc_base); + printk(KERN_INFO PFX "Floppy controller at 0x%x\n", sio->fdc_base); pci_read_config_dword (pdev, SIO_ACPIBAR, &sio->acpi_base); sio->acpi_base &= ~1; - printk (KERN_INFO "SuperIO: ACPI at 0x%x\n", sio->acpi_base); + printk(KERN_INFO PFX "ACPI at 0x%x\n", sio->acpi_base); request_region (IC_PIC1, 0x1f, "pic1"); request_region (IC_PIC2, 0x1f, "pic2"); @@ -263,14 +266,14 @@ superio_init(struct pci_dev *pcidev) /* Setup USB power regulation */ outb(1, sio->acpi_base + USB_REG_CR); if (inb(sio->acpi_base + USB_REG_CR) & 1) - printk(KERN_INFO "SuperIO: USB regulator enabled\n"); + printk(KERN_INFO PFX "USB regulator enabled\n"); else - printk(KERN_ERR "USB regulator not initialized!\n"); + printk(KERN_ERR PFX "USB regulator not initialized!\n"); if (request_irq(pdev->irq, superio_interrupt, SA_INTERRUPT, - "SuperIO", (void *)sio)) { + SUPERIO, (void *)sio)) { - printk(KERN_ERR "SuperIO: could not get irq\n"); + printk(KERN_ERR PFX "could not get irq\n"); BUG(); return; } @@ -284,7 +287,7 @@ static void superio_disable_irq(unsigned int irq) u8 r8; if ((irq < 1) || (irq == 2) || (irq > 7)) { - printk(KERN_ERR "SuperIO: Illegal irq number.\n"); + printk(KERN_ERR PFX "Illegal irq number.\n"); BUG(); return; } @@ -301,7 +304,7 @@ static void superio_enable_irq(unsigned int irq) u8 r8; if ((irq < 1) || (irq == 2) || (irq > 7)) { - printk(KERN_ERR "SuperIO: Illegal irq number (%d).\n", irq); + printk(KERN_ERR PFX "Illegal irq number (%d).\n", irq); BUG(); return; } @@ -319,7 +322,7 @@ static unsigned int superio_startup_irq(unsigned int irq) } static struct hw_interrupt_type superio_interrupt_type = { - .typename = "SuperIO", + .typename = SUPERIO, .startup = superio_startup_irq, .shutdown = superio_disable_irq, .enable = superio_enable_irq, @@ -413,7 +416,7 @@ static void __devinit superio_serial_init(void) retval = early_serial_setup(&serial[0]); if (retval < 0) { - printk(KERN_WARNING "SuperIO: Register Serial #0 failed.\n"); + printk(KERN_WARNING PFX "Register Serial #0 failed.\n"); return; } @@ -423,7 +426,7 @@ static void __devinit superio_serial_init(void) retval = early_serial_setup(&serial[1]); if (retval < 0) - printk(KERN_WARNING "SuperIO: Register Serial #1 failed.\n"); + printk(KERN_WARNING PFX "Register Serial #1 failed.\n"); #endif /* CONFIG_SERIAL_8250 */ } @@ -437,7 +440,7 @@ static void __devinit superio_parport_init(void) PARPORT_DMA_NONE /* dma */, NULL /*struct pci_dev* */) ) - printk(KERN_WARNING "SuperIO: Probing parallel port failed.\n"); + printk(KERN_WARNING PFX "Probing parallel port failed.\n"); #endif /* CONFIG_PARPORT_PC */ } @@ -499,7 +502,7 @@ static struct pci_device_id superio_tbl[] = { }; static struct pci_driver superio_driver = { - .name = "SuperIO", + .name = SUPERIO, .id_table = superio_tbl, .probe = superio_probe, }; diff --git a/drivers/parisc/wax.c b/drivers/parisc/wax.c index 17dce2adf7f..813c2c24ab1 100644 --- a/drivers/parisc/wax.c +++ b/drivers/parisc/wax.c @@ -76,7 +76,7 @@ wax_init_chip(struct parisc_device *dev) struct gsc_irq gsc_irq; int ret; - wax = kmalloc(sizeof(*wax), GFP_KERNEL); + wax = kzalloc(sizeof(*wax), GFP_KERNEL); if (!wax) return -ENOMEM; diff --git a/drivers/parport/parport_gsc.c b/drivers/parport/parport_gsc.c index fde29a75f88..1de52d9febf 100644 --- a/drivers/parport/parport_gsc.c +++ b/drivers/parport/parport_gsc.c @@ -249,7 +249,7 @@ struct parport *__devinit parport_gsc_probe_port (unsigned long base, struct parport tmp; struct parport *p = &tmp; - priv = kmalloc (sizeof (struct parport_gsc_private), GFP_KERNEL); + priv = kzalloc (sizeof (struct parport_gsc_private), GFP_KERNEL); if (!priv) { printk (KERN_DEBUG "parport (0x%lx): no memory!\n", base); return NULL; diff --git a/drivers/video/console/sticore.c b/drivers/video/console/sticore.c index a7bcd17112c..0339f5640a7 100644 --- a/drivers/video/console/sticore.c +++ b/drivers/video/console/sticore.c @@ -30,10 +30,11 @@ #define STI_DRIVERVERSION "Version 0.9a" -struct sti_struct *default_sti; +struct sti_struct *default_sti __read_mostly; -static int num_sti_roms; /* # of STI ROMS found */ -static struct sti_struct *sti_roms[MAX_STI_ROMS]; /* ptr to each sti_struct */ +/* number of STI ROMS found and their ptrs to each struct */ +static int num_sti_roms __read_mostly; +static struct sti_struct *sti_roms[MAX_STI_ROMS] __read_mostly; /* The colour indices used by STI are @@ -266,7 +267,7 @@ sti_rom_copy(unsigned long base, unsigned long count, void *dest) -static char default_sti_path[21]; +static char default_sti_path[21] __read_mostly; #ifndef MODULE static int __init sti_setup(char *str) @@ -414,10 +415,10 @@ sti_init_glob_cfg(struct sti_struct *sti, if (!sti->sti_mem_request) sti->sti_mem_request = 256; /* STI default */ - glob_cfg = kmalloc(sizeof(*sti->glob_cfg), GFP_KERNEL); - glob_cfg_ext = kmalloc(sizeof(*glob_cfg_ext), GFP_KERNEL); - save_addr = kmalloc(save_addr_size, GFP_KERNEL); - sti_mem_addr = kmalloc(sti->sti_mem_request, GFP_KERNEL); + glob_cfg = kzalloc(sizeof(*sti->glob_cfg), GFP_KERNEL); + glob_cfg_ext = kzalloc(sizeof(*glob_cfg_ext), GFP_KERNEL); + save_addr = kzalloc(save_addr_size, GFP_KERNEL); + sti_mem_addr = kzalloc(sti->sti_mem_request, GFP_KERNEL); if (!(glob_cfg && glob_cfg_ext && save_addr && sti_mem_addr)) { kfree(glob_cfg); @@ -427,11 +428,6 @@ sti_init_glob_cfg(struct sti_struct *sti, return -ENOMEM; } - memset(glob_cfg, 0, sizeof(*glob_cfg)); - memset(glob_cfg_ext, 0, sizeof(*glob_cfg_ext)); - memset(save_addr, 0, save_addr_size); - memset(sti_mem_addr, 0, sti->sti_mem_request); - glob_cfg->ext_ptr = STI_PTR(glob_cfg_ext); glob_cfg->save_addr = STI_PTR(save_addr); for (i=0; i<8; i++) { @@ -502,9 +498,9 @@ sti_init_glob_cfg(struct sti_struct *sti, #ifdef CONFIG_FB struct sti_cooked_font * __init -sti_select_fbfont( struct sti_cooked_rom *cooked_rom, char *fbfont_name ) +sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) { - struct font_desc *fbfont; + const struct font_desc *fbfont; unsigned int size, bpc; void *dest; struct sti_rom_font *nf; @@ -525,10 +521,9 @@ sti_select_fbfont( struct sti_cooked_rom *cooked_rom, char *fbfont_name ) size = bpc * 256; size += sizeof(struct sti_rom_font); - nf = kmalloc(size, GFP_KERNEL); + nf = kzalloc(size, GFP_KERNEL); if (!nf) return NULL; - memset(nf, 0, size); nf->first_char = 0; nf->last_char = 255; @@ -544,7 +539,7 @@ sti_select_fbfont( struct sti_cooked_rom *cooked_rom, char *fbfont_name ) dest += sizeof(struct sti_rom_font); memcpy(dest, fbfont->data, bpc*256); - cooked_font = kmalloc(sizeof(*cooked_font), GFP_KERNEL); + cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); if (!cooked_font) { kfree(nf); return NULL; @@ -559,7 +554,7 @@ sti_select_fbfont( struct sti_cooked_rom *cooked_rom, char *fbfont_name ) } #else struct sti_cooked_font * __init -sti_select_fbfont(struct sti_cooked_rom *cooked_rom, char *fbfont_name) +sti_select_fbfont(struct sti_cooked_rom *cooked_rom, const char *fbfont_name) { return NULL; } @@ -617,7 +612,7 @@ sti_cook_fonts(struct sti_cooked_rom *cooked_rom, struct sti_rom_font *raw_font, *font_start; struct sti_cooked_font *cooked_font; - cooked_font = kmalloc(sizeof(*cooked_font), GFP_KERNEL); + cooked_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); if (!cooked_font) return 0; @@ -631,7 +626,7 @@ sti_cook_fonts(struct sti_cooked_rom *cooked_rom, while (raw_font->next_font) { raw_font = ((void *)font_start) + (raw_font->next_font); - cooked_font->next_font = kmalloc(sizeof(*cooked_font), GFP_KERNEL); + cooked_font->next_font = kzalloc(sizeof(*cooked_font), GFP_KERNEL); if (!cooked_font->next_font) return 1; @@ -668,10 +663,9 @@ sti_bmode_font_raw(struct sti_cooked_font *f) unsigned char *n, *p, *q; int size = f->raw->bytes_per_char*256+sizeof(struct sti_rom_font); - n = kmalloc (4*size, GFP_KERNEL); + n = kzalloc (4*size, GFP_KERNEL); if (!n) return NULL; - memset (n, 0, 4*size); p = n + 3; q = (unsigned char *)f->raw; while (size--) { @@ -816,13 +810,12 @@ sti_try_rom_generic(unsigned long address, unsigned long hpa, struct pci_dev *pd return NULL; } - sti = kmalloc(sizeof(*sti), GFP_KERNEL); + sti = kzalloc(sizeof(*sti), GFP_KERNEL); if (!sti) { printk(KERN_ERR "Not enough memory !\n"); return NULL; } - memset(sti, 0, sizeof(*sti)); spin_lock_init(&sti->lock); test_rom: @@ -1035,7 +1028,7 @@ static struct parisc_driver pa_sti_driver = { * sti_init_roms() - detects all STI ROMs and stores them in sti_roms[] */ -static int sticore_initialized; +static int sticore_initialized __read_mostly; static void __init sti_init_roms(void) { |