diff options
Diffstat (limited to 'drivers/char')
-rw-r--r-- | drivers/char/Kconfig | 4 | ||||
-rw-r--r-- | drivers/char/agp/amd64-agp.c | 10 | ||||
-rw-r--r-- | drivers/char/agp/backend.c | 13 | ||||
-rw-r--r-- | drivers/char/agp/hp-agp.c | 6 | ||||
-rw-r--r-- | drivers/char/agp/intel-agp.c | 6 | ||||
-rw-r--r-- | drivers/char/efirtc.c | 1 | ||||
-rw-r--r-- | drivers/char/hvc_iucv.c | 2 | ||||
-rw-r--r-- | drivers/char/hw_random/core.c | 5 | ||||
-rw-r--r-- | drivers/char/hw_random/virtio-rng.c | 6 | ||||
-rw-r--r-- | drivers/char/ipmi/ipmi_kcs_sm.c | 2 | ||||
-rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 118 | ||||
-rw-r--r-- | drivers/char/keyboard.c | 29 | ||||
-rw-r--r-- | drivers/char/mem.c | 161 | ||||
-rw-r--r-- | drivers/char/misc.c | 26 | ||||
-rw-r--r-- | drivers/char/nozomi.c | 50 | ||||
-rw-r--r-- | drivers/char/nwflash.c | 1 | ||||
-rw-r--r-- | drivers/char/random.c | 10 | ||||
-rw-r--r-- | drivers/char/sonypi.c | 60 | ||||
-rw-r--r-- | drivers/char/sysrq.c | 2 | ||||
-rw-r--r-- | drivers/char/toshiba.c | 12 | ||||
-rw-r--r-- | drivers/char/tty_io.c | 2 | ||||
-rw-r--r-- | drivers/char/vt.c | 50 |
22 files changed, 351 insertions, 225 deletions
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig index 6f31c947210..e023682be2c 100644 --- a/drivers/char/Kconfig +++ b/drivers/char/Kconfig @@ -502,7 +502,7 @@ config BRIQ_PANEL config BFIN_OTP tristate "Blackfin On-Chip OTP Memory Support" - depends on BLACKFIN && (BF52x || BF54x) + depends on BLACKFIN && (BF51x || BF52x || BF54x) default y help If you say Y here, you will get support for a character device @@ -669,7 +669,7 @@ config VIRTIO_CONSOLE config HVCS tristate "IBM Hypervisor Virtual Console Server support" - depends on PPC_PSERIES + depends on PPC_PSERIES && HVC_CONSOLE help Partitionable IBM Power5 ppc64 machines allow hosting of firmware virtual consoles from one Linux partition by diff --git a/drivers/char/agp/amd64-agp.c b/drivers/char/agp/amd64-agp.c index 2fb2e6cc322..1afb8968a34 100644 --- a/drivers/char/agp/amd64-agp.c +++ b/drivers/char/agp/amd64-agp.c @@ -728,6 +728,10 @@ int __init agp_amd64_init(void) if (agp_off) return -EINVAL; + + if (gart_iommu_aperture) + return agp_bridges_found ? 0 : -ENODEV; + err = pci_register_driver(&agp_amd64_pci_driver); if (err < 0) return err; @@ -766,17 +770,15 @@ int __init agp_amd64_init(void) static void __exit agp_amd64_cleanup(void) { + if (gart_iommu_aperture) + return; if (aperture_resource) release_resource(aperture_resource); pci_unregister_driver(&agp_amd64_pci_driver); } -/* On AMD64 the PCI driver needs to initialize this driver early - for the IOMMU, so it has to be called via a backdoor. */ -#ifndef CONFIG_GART_IOMMU module_init(agp_amd64_init); module_exit(agp_amd64_cleanup); -#endif MODULE_AUTHOR("Dave Jones <davej@redhat.com>, Andi Kleen"); module_param(agp_try_unsupported, bool, 0); diff --git a/drivers/char/agp/backend.c b/drivers/char/agp/backend.c index a56ca080e10..c3ab46da51a 100644 --- a/drivers/char/agp/backend.c +++ b/drivers/char/agp/backend.c @@ -285,18 +285,22 @@ int agp_add_bridge(struct agp_bridge_data *bridge) { int error; - if (agp_off) - return -ENODEV; + if (agp_off) { + error = -ENODEV; + goto err_put_bridge; + } if (!bridge->dev) { printk (KERN_DEBUG PFX "Erk, registering with no pci_dev!\n"); - return -EINVAL; + error = -EINVAL; + goto err_put_bridge; } /* Grab reference on the chipset driver. */ if (!try_module_get(bridge->driver->owner)) { dev_info(&bridge->dev->dev, "can't lock chipset driver\n"); - return -EINVAL; + error = -EINVAL; + goto err_put_bridge; } error = agp_backend_initialize(bridge); @@ -326,6 +330,7 @@ frontend_err: agp_backend_cleanup(bridge); err_out: module_put(bridge->driver->owner); +err_put_bridge: agp_put_bridge(bridge); return error; } diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c index 9047b271465..58752b70efe 100644 --- a/drivers/char/agp/hp-agp.c +++ b/drivers/char/agp/hp-agp.c @@ -488,9 +488,8 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret) handle = obj; do { status = acpi_get_object_info(handle, &info); - if (ACPI_SUCCESS(status)) { + if (ACPI_SUCCESS(status) && (info->valid & ACPI_VALID_HID)) { /* TBD check _CID also */ - info->hardware_id.string[sizeof(info->hardware_id.length)-1] = '\0'; match = (strcmp(info->hardware_id.string, "HWP0001") == 0); kfree(info); if (match) { @@ -509,6 +508,9 @@ zx1_gart_probe (acpi_handle obj, u32 depth, void *context, void **ret) handle = parent; } while (ACPI_SUCCESS(status)); + if (ACPI_FAILURE(status)) + return AE_OK; /* found no enclosing IOC */ + if (hp_zx1_setup(sba_hpa + HP_ZX1_IOC_OFFSET, lba_hpa)) return AE_OK; diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index 30c36ac2cd0..3999a5f25f3 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -2460,10 +2460,14 @@ static int __devinit agp_intel_probe(struct pci_dev *pdev, &bridge->mode); } - if (bridge->driver->mask_memory == intel_i965_mask_memory) + if (bridge->driver->mask_memory == intel_i965_mask_memory) { if (pci_set_dma_mask(intel_private.pcidev, DMA_BIT_MASK(36))) dev_err(&intel_private.pcidev->dev, "set gfx device dma mask 36bit failed!\n"); + else + pci_set_consistent_dma_mask(intel_private.pcidev, + DMA_BIT_MASK(36)); + } pci_set_drvdata(pdev, bridge); return agp_add_bridge(bridge); diff --git a/drivers/char/efirtc.c b/drivers/char/efirtc.c index 26a47dc88f6..53c524e7b82 100644 --- a/drivers/char/efirtc.c +++ b/drivers/char/efirtc.c @@ -285,6 +285,7 @@ static const struct file_operations efi_rtc_fops = { .unlocked_ioctl = efi_rtc_ioctl, .open = efi_rtc_open, .release = efi_rtc_close, + .llseek = no_llseek, }; static struct miscdevice efi_rtc_dev= { diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c index b8a5d654d3d..fe62bd0e17b 100644 --- a/drivers/char/hvc_iucv.c +++ b/drivers/char/hvc_iucv.c @@ -931,7 +931,7 @@ static struct hv_ops hvc_iucv_ops = { }; /* Suspend / resume device operations */ -static struct dev_pm_ops hvc_iucv_pm_ops = { +static const struct dev_pm_ops hvc_iucv_pm_ops = { .freeze = hvc_iucv_pm_freeze, .thaw = hvc_iucv_pm_restore_thaw, .restore = hvc_iucv_pm_restore_thaw, diff --git a/drivers/char/hw_random/core.c b/drivers/char/hw_random/core.c index e989f67bb61..3d9c61e5acb 100644 --- a/drivers/char/hw_random/core.c +++ b/drivers/char/hw_random/core.c @@ -158,10 +158,11 @@ static ssize_t rng_dev_read(struct file *filp, char __user *buf, goto out; } } -out_unlock: - mutex_unlock(&rng_mutex); out: return ret ? : err; +out_unlock: + mutex_unlock(&rng_mutex); + goto out; } diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c index bdaef8e9402..64fe0a793ef 100644 --- a/drivers/char/hw_random/virtio-rng.c +++ b/drivers/char/hw_random/virtio-rng.c @@ -114,7 +114,7 @@ static struct virtio_device_id id_table[] = { { 0 }, }; -static struct virtio_driver virtio_rng = { +static struct virtio_driver virtio_rng_driver = { .driver.name = KBUILD_MODNAME, .driver.owner = THIS_MODULE, .id_table = id_table, @@ -124,12 +124,12 @@ static struct virtio_driver virtio_rng = { static int __init init(void) { - return register_virtio_driver(&virtio_rng); + return register_virtio_driver(&virtio_rng_driver); } static void __exit fini(void) { - unregister_virtio_driver(&virtio_rng); + unregister_virtio_driver(&virtio_rng_driver); } module_init(init); module_exit(fini); diff --git a/drivers/char/ipmi/ipmi_kcs_sm.c b/drivers/char/ipmi/ipmi_kcs_sm.c index 80704875794..cf82fedae09 100644 --- a/drivers/char/ipmi/ipmi_kcs_sm.c +++ b/drivers/char/ipmi/ipmi_kcs_sm.c @@ -370,7 +370,7 @@ static enum si_sm_result kcs_event(struct si_sm_data *kcs, long time) return SI_SM_IDLE; case KCS_START_OP: - if (state != KCS_IDLE) { + if (state != KCS_IDLE_STATE) { start_error_recovery(kcs, "State machine not idle at start"); break; diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index d2e698096ac..176f1751237 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -64,6 +64,7 @@ #include <linux/dmi.h> #include <linux/string.h> #include <linux/ctype.h> +#include <linux/pnp.h> #ifdef CONFIG_PPC_OF #include <linux/of_device.h> @@ -1919,7 +1920,7 @@ struct SPMITable { s8 spmi_id[1]; /* A '\0' terminated array starts here. */ }; -static __devinit int try_init_acpi(struct SPMITable *spmi) +static __devinit int try_init_spmi(struct SPMITable *spmi) { struct smi_info *info; u8 addr_space; @@ -1940,7 +1941,7 @@ static __devinit int try_init_acpi(struct SPMITable *spmi) return -ENOMEM; } - info->addr_source = "ACPI"; + info->addr_source = "SPMI"; /* Figure out the interface type. */ switch (spmi->InterfaceType) { @@ -2002,7 +2003,7 @@ static __devinit int try_init_acpi(struct SPMITable *spmi) return 0; } -static __devinit void acpi_find_bmc(void) +static __devinit void spmi_find_bmc(void) { acpi_status status; struct SPMITable *spmi; @@ -2020,9 +2021,106 @@ static __devinit void acpi_find_bmc(void) if (status != AE_OK) return; - try_init_acpi(spmi); + try_init_spmi(spmi); } } + +static int __devinit ipmi_pnp_probe(struct pnp_dev *dev, + const struct pnp_device_id *dev_id) +{ + struct acpi_device *acpi_dev; + struct smi_info *info; + acpi_handle handle; + acpi_status status; + unsigned long long tmp; + + acpi_dev = pnp_acpi_device(dev); + if (!acpi_dev) + return -ENODEV; + + info = kzalloc(sizeof(*info), GFP_KERNEL); + if (!info) + return -ENOMEM; + + info->addr_source = "ACPI"; + + handle = acpi_dev->handle; + + /* _IFT tells us the interface type: KCS, BT, etc */ + status = acpi_evaluate_integer(handle, "_IFT", NULL, &tmp); + if (ACPI_FAILURE(status)) + goto err_free; + + switch (tmp) { + case 1: + info->si_type = SI_KCS; + break; + case 2: + info->si_type = SI_SMIC; + break; + case 3: + info->si_type = SI_BT; + break; + default: + dev_info(&dev->dev, "unknown interface type %lld\n", tmp); + goto err_free; + } + + if (pnp_port_valid(dev, 0)) { + info->io_setup = port_setup; + info->io.addr_type = IPMI_IO_ADDR_SPACE; + info->io.addr_data = pnp_port_start(dev, 0); + } else if (pnp_mem_valid(dev, 0)) { + info->io_setup = mem_setup; + info->io.addr_type = IPMI_MEM_ADDR_SPACE; + info->io.addr_data = pnp_mem_start(dev, 0); + } else { + dev_err(&dev->dev, "no I/O or memory address\n"); + goto err_free; + } + + info->io.regspacing = DEFAULT_REGSPACING; + info->io.regsize = DEFAULT_REGSPACING; + info->io.regshift = 0; + + /* If _GPE exists, use it; otherwise use standard interrupts */ + status = acpi_evaluate_integer(handle, "_GPE", NULL, &tmp); + if (ACPI_SUCCESS(status)) { + info->irq = tmp; + info->irq_setup = acpi_gpe_irq_setup; + } else if (pnp_irq_valid(dev, 0)) { + info->irq = pnp_irq(dev, 0); + info->irq_setup = std_irq_setup; + } + + info->dev = &acpi_dev->dev; + pnp_set_drvdata(dev, info); + + return try_smi_init(info); + +err_free: + kfree(info); + return -EINVAL; +} + +static void __devexit ipmi_pnp_remove(struct pnp_dev *dev) +{ + struct smi_info *info = pnp_get_drvdata(dev); + + cleanup_one_si(info); +} + +static const struct pnp_device_id pnp_dev_table[] = { + {"IPI0001", 0}, + {"", 0}, +}; + +static struct pnp_driver ipmi_pnp_driver = { + .name = DEVICE_NAME, + .probe = ipmi_pnp_probe, + .remove = __devexit_p(ipmi_pnp_remove), + .id_table = pnp_dev_table, +}; #endif #ifdef CONFIG_DMI @@ -2202,7 +2300,6 @@ static int __devinit ipmi_pci_probe(struct pci_dev *pdev, int rv; int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; struct smi_info *info; - int first_reg_offset = 0; info = kzalloc(sizeof(*info), GFP_KERNEL); if (!info) @@ -2241,9 +2338,6 @@ static int __devinit ipmi_pci_probe(struct pci_dev *pdev, info->addr_source_cleanup = ipmi_pci_cleanup; info->addr_source_data = pdev; - if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) - first_reg_offset = 1; - if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { info->io_setup = port_setup; info->io.addr_type = IPMI_IO_ADDR_SPACE; @@ -3108,7 +3202,10 @@ static __devinit int init_ipmi_si(void) #endif #ifdef CONFIG_ACPI - acpi_find_bmc(); + spmi_find_bmc(); +#endif +#ifdef CONFIG_ACPI + pnp_register_driver(&ipmi_pnp_driver); #endif #ifdef CONFIG_PCI @@ -3233,6 +3330,9 @@ static __exit void cleanup_ipmi_si(void) #ifdef CONFIG_PCI pci_unregister_driver(&ipmi_pci_driver); #endif +#ifdef CONFIG_ACPI + pnp_unregister_driver(&ipmi_pnp_driver); +#endif #ifdef CONFIG_PPC_OF of_unregister_platform_driver(&ipmi_of_platform_driver); diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c index f706b1dffdb..ada25bb8941 100644 --- a/drivers/char/keyboard.c +++ b/drivers/char/keyboard.c @@ -1185,11 +1185,6 @@ static void kbd_keycode(unsigned int keycode, int down, int hw_raw) rep = (down == 2); -#ifdef CONFIG_MAC_EMUMOUSEBTN - if (mac_hid_mouse_emulate_buttons(1, keycode, down)) - return; -#endif /* CONFIG_MAC_EMUMOUSEBTN */ - if ((raw_mode = (kbd->kbdmode == VC_RAW)) && !hw_raw) if (emulate_raw(vc, keycode, !down << 7)) if (keycode < BTN_MISC && printk_ratelimit()) @@ -1328,6 +1323,21 @@ static void kbd_event(struct input_handle *handle, unsigned int event_type, schedule_console_callback(); } +static bool kbd_match(struct input_handler *handler, struct input_dev *dev) +{ + int i; + + if (test_bit(EV_SND, dev->evbit)) + return true; + + if (test_bit(EV_KEY, dev->evbit)) + for (i = KEY_RESERVED; i < BTN_MISC; i++) + if (test_bit(i, dev->keybit)) + return true; + + return false; +} + /* * When a keyboard (or other input device) is found, the kbd_connect * function is called. The function then looks at the device, and if it @@ -1339,14 +1349,6 @@ static int kbd_connect(struct input_handler *handler, struct input_dev *dev, { struct input_handle *handle; int error; - int i; - - for (i = KEY_RESERVED; i < BTN_MISC; i++) - if (test_bit(i, dev->keybit)) - break; - - if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit)) - return -ENODEV; handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL); if (!handle) @@ -1412,6 +1414,7 @@ MODULE_DEVICE_TABLE(input, kbd_ids); static struct input_handler kbd_handler = { .event = kbd_event, + .match = kbd_match, .connect = kbd_connect, .disconnect = kbd_disconnect, .start = kbd_start, diff --git a/drivers/char/mem.c b/drivers/char/mem.c index fba76fb55ab..be832b6f827 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -34,6 +34,16 @@ # include <linux/efi.h> #endif +static inline unsigned long size_inside_page(unsigned long start, + unsigned long size) +{ + unsigned long sz; + + sz = PAGE_SIZE - (start & (PAGE_SIZE - 1)); + + return min(sz, size); +} + /* * Architectures vary in how they handle caching for addresses * outside of main memory. @@ -126,9 +136,7 @@ static ssize_t read_mem(struct file * file, char __user * buf, #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED /* we don't have page 0 mapped on sparc and m68k.. */ if (p < PAGE_SIZE) { - sz = PAGE_SIZE - p; - if (sz > count) - sz = count; + sz = size_inside_page(p, count); if (sz > 0) { if (clear_user(buf, sz)) return -EFAULT; @@ -141,15 +149,9 @@ static ssize_t read_mem(struct file * file, char __user * buf, #endif while (count > 0) { - /* - * Handle first page in case it's not aligned - */ - if (-p & (PAGE_SIZE - 1)) - sz = -p & (PAGE_SIZE - 1); - else - sz = PAGE_SIZE; + unsigned long remaining; - sz = min_t(unsigned long, sz, count); + sz = size_inside_page(p, count); if (!range_is_allowed(p >> PAGE_SHIFT, count)) return -EPERM; @@ -163,12 +165,10 @@ static ssize_t read_mem(struct file * file, char __user * buf, if (!ptr) return -EFAULT; - if (copy_to_user(buf, ptr, sz)) { - unxlate_dev_mem_ptr(p, ptr); - return -EFAULT; - } - + remaining = copy_to_user(buf, ptr, sz); unxlate_dev_mem_ptr(p, ptr); + if (remaining) + return -EFAULT; buf += sz; p += sz; @@ -196,9 +196,7 @@ static ssize_t write_mem(struct file * file, const char __user * buf, #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED /* we don't have page 0 mapped on sparc and m68k.. */ if (p < PAGE_SIZE) { - unsigned long sz = PAGE_SIZE - p; - if (sz > count) - sz = count; + sz = size_inside_page(p, count); /* Hmm. Do something? */ buf += sz; p += sz; @@ -208,15 +206,7 @@ static ssize_t write_mem(struct file * file, const char __user * buf, #endif while (count > 0) { - /* - * Handle first page in case it's not aligned - */ - if (-p & (PAGE_SIZE - 1)) - sz = -p & (PAGE_SIZE - 1); - else - sz = PAGE_SIZE; - - sz = min_t(unsigned long, sz, count); + sz = size_inside_page(p, count); if (!range_is_allowed(p >> PAGE_SHIFT, sz)) return -EPERM; @@ -234,16 +224,14 @@ static ssize_t write_mem(struct file * file, const char __user * buf, } copied = copy_from_user(ptr, buf, sz); + unxlate_dev_mem_ptr(p, ptr); if (copied) { written += sz - copied; - unxlate_dev_mem_ptr(p, ptr); if (written) break; return -EFAULT; } - unxlate_dev_mem_ptr(p, ptr); - buf += sz; p += sz; count -= sz; @@ -417,27 +405,18 @@ static ssize_t read_kmem(struct file *file, char __user *buf, #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED /* we don't have page 0 mapped on sparc and m68k.. */ if (p < PAGE_SIZE && low_count > 0) { - size_t tmp = PAGE_SIZE - p; - if (tmp > low_count) tmp = low_count; - if (clear_user(buf, tmp)) + sz = size_inside_page(p, low_count); + if (clear_user(buf, sz)) return -EFAULT; - buf += tmp; - p += tmp; - read += tmp; - low_count -= tmp; - count -= tmp; + buf += sz; + p += sz; + read += sz; + low_count -= sz; + count -= sz; } #endif while (low_count > 0) { - /* - * Handle first page in case it's not aligned - */ - if (-p & (PAGE_SIZE - 1)) - sz = -p & (PAGE_SIZE - 1); - else - sz = PAGE_SIZE; - - sz = min_t(unsigned long, sz, low_count); + sz = size_inside_page(p, low_count); /* * On ia64 if a page has been mapped somewhere as @@ -461,21 +440,18 @@ static ssize_t read_kmem(struct file *file, char __user *buf, if (!kbuf) return -ENOMEM; while (count > 0) { - int len = count; - - if (len > PAGE_SIZE) - len = PAGE_SIZE; - len = vread(kbuf, (char *)p, len); - if (!len) + sz = size_inside_page(p, count); + sz = vread(kbuf, (char *)p, sz); + if (!sz) break; - if (copy_to_user(buf, kbuf, len)) { + if (copy_to_user(buf, kbuf, sz)) { free_page((unsigned long)kbuf); return -EFAULT; } - count -= len; - buf += len; - read += len; - p += len; + count -= sz; + buf += sz; + read += sz; + p += sz; } free_page((unsigned long)kbuf); } @@ -485,7 +461,7 @@ static ssize_t read_kmem(struct file *file, char __user *buf, static inline ssize_t -do_write_kmem(void *p, unsigned long realp, const char __user * buf, +do_write_kmem(unsigned long p, const char __user *buf, size_t count, loff_t *ppos) { ssize_t written, sz; @@ -494,14 +470,11 @@ do_write_kmem(void *p, unsigned long realp, const char __user * buf, written = 0; #ifdef __ARCH_HAS_NO_PAGE_ZERO_MAPPED /* we don't have page 0 mapped on sparc and m68k.. */ - if (realp < PAGE_SIZE) { - unsigned long sz = PAGE_SIZE - realp; - if (sz > count) - sz = count; + if (p < PAGE_SIZE) { + sz = size_inside_page(p, count); /* Hmm. Do something? */ buf += sz; p += sz; - realp += sz; count -= sz; written += sz; } @@ -509,22 +482,15 @@ do_write_kmem(void *p, unsigned long realp, const char __user * buf, while (count > 0) { char *ptr; - /* - * Handle first page in case it's not aligned - */ - if (-realp & (PAGE_SIZE - 1)) - sz = -realp & (PAGE_SIZE - 1); - else - sz = PAGE_SIZE; - sz = min_t(unsigned long, sz, count); + sz = size_inside_page(p, count); /* * On ia64 if a page has been mapped somewhere as * uncached, then it must also be accessed uncached * by the kernel or data corruption may occur */ - ptr = xlate_dev_kmem_ptr(p); + ptr = xlate_dev_kmem_ptr((char *)p); copied = copy_from_user(ptr, buf, sz); if (copied) { @@ -535,7 +501,6 @@ do_write_kmem(void *p, unsigned long realp, const char __user * buf, } buf += sz; p += sz; - realp += sz; count -= sz; written += sz; } @@ -554,19 +519,14 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, unsigned long p = *ppos; ssize_t wrote = 0; ssize_t virtr = 0; - ssize_t written; char * kbuf; /* k-addr because vwrite() takes vmlist_lock rwlock */ if (p < (unsigned long) high_memory) { - - wrote = count; - if (count > (unsigned long) high_memory - p) - wrote = (unsigned long) high_memory - p; - - written = do_write_kmem((void*)p, p, buf, wrote, ppos); - if (written != wrote) - return written; - wrote = written; + unsigned long to_write = min_t(unsigned long, count, + (unsigned long)high_memory - p); + wrote = do_write_kmem(p, buf, to_write, ppos); + if (wrote != to_write) + return wrote; p += wrote; buf += wrote; count -= wrote; @@ -577,24 +537,21 @@ static ssize_t write_kmem(struct file * file, const char __user * buf, if (!kbuf) return wrote ? wrote : -ENOMEM; while (count > 0) { - int len = count; - - if (len > PAGE_SIZE) - len = PAGE_SIZE; - if (len) { - written = copy_from_user(kbuf, buf, len); - if (written) { - if (wrote + virtr) - break; - free_page((unsigned long)kbuf); - return -EFAULT; - } + unsigned long sz = size_inside_page(p, count); + unsigned long n; + + n = copy_from_user(kbuf, buf, sz); + if (n) { + if (wrote + virtr) + break; + free_page((unsigned long)kbuf); + return -EFAULT; } - len = vwrite(kbuf, (char *)p, len); - count -= len; - buf += len; - virtr += len; - p += len; + sz = vwrite(kbuf, (char *)p, sz); + count -= sz; + buf += sz; + virtr += sz; + p += sz; } free_page((unsigned long)kbuf); } diff --git a/drivers/char/misc.c b/drivers/char/misc.c index 96f1cd086dd..94a136e96c0 100644 --- a/drivers/char/misc.c +++ b/drivers/char/misc.c @@ -60,9 +60,7 @@ static DEFINE_MUTEX(misc_mtx); * Assigned numbers, used for dynamic minors */ #define DYNAMIC_MINORS 64 /* like dynamic majors */ -static unsigned char misc_minors[DYNAMIC_MINORS / 8]; - -extern int pmu_device_init(void); +static DECLARE_BITMAP(misc_minors, DYNAMIC_MINORS); #ifdef CONFIG_PROC_FS static void *misc_seq_start(struct seq_file *seq, loff_t *pos) @@ -198,24 +196,23 @@ int misc_register(struct miscdevice * misc) } if (misc->minor == MISC_DYNAMIC_MINOR) { - int i = DYNAMIC_MINORS; - while (--i >= 0) - if ( (misc_minors[i>>3] & (1 << (i&7))) == 0) - break; - if (i<0) { + int i = find_first_zero_bit(misc_minors, DYNAMIC_MINORS); + if (i >= DYNAMIC_MINORS) { mutex_unlock(&misc_mtx); return -EBUSY; } - misc->minor = i; + misc->minor = DYNAMIC_MINORS - i - 1; + set_bit(i, misc_minors); } - if (misc->minor < DYNAMIC_MINORS) - misc_minors[misc->minor >> 3] |= 1 << (misc->minor & 7); dev = MKDEV(MISC_MAJOR, misc->minor); misc->this_device = device_create(misc_class, misc->parent, dev, misc, "%s", misc->name); if (IS_ERR(misc->this_device)) { + int i = DYNAMIC_MINORS - misc->minor - 1; + if (i < DYNAMIC_MINORS && i >= 0) + clear_bit(i, misc_minors); err = PTR_ERR(misc->this_device); goto out; } @@ -242,7 +239,7 @@ int misc_register(struct miscdevice * misc) int misc_deregister(struct miscdevice *misc) { - int i = misc->minor; + int i = DYNAMIC_MINORS - misc->minor - 1; if (list_empty(&misc->list)) return -EINVAL; @@ -250,9 +247,8 @@ int misc_deregister(struct miscdevice *misc) mutex_lock(&misc_mtx); list_del(&misc->list); device_destroy(misc_class, MKDEV(MISC_MAJOR, misc->minor)); - if (i < DYNAMIC_MINORS && i>0) { - misc_minors[i>>3] &= ~(1 << (misc->minor & 7)); - } + if (i < DYNAMIC_MINORS && i >= 0) + clear_bit(i, misc_minors); mutex_unlock(&misc_mtx); return 0; } diff --git a/drivers/char/nozomi.c b/drivers/char/nozomi.c index d3400b20444..2ad7d37afbd 100644 --- a/drivers/char/nozomi.c +++ b/drivers/char/nozomi.c @@ -358,7 +358,7 @@ struct port { u8 update_flow_control; struct ctrl_ul ctrl_ul; struct ctrl_dl ctrl_dl; - struct kfifo *fifo_ul; + struct kfifo fifo_ul; void __iomem *dl_addr[2]; u32 dl_size[2]; u8 toggle_dl; @@ -685,8 +685,6 @@ static int nozomi_read_config_table(struct nozomi *dc) dump_table(dc); for (i = PORT_MDM; i < MAX_PORT; i++) { - dc->port[i].fifo_ul = - kfifo_alloc(FIFO_BUFFER_SIZE_UL, GFP_ATOMIC, NULL); memset(&dc->port[i].ctrl_dl, 0, sizeof(struct ctrl_dl)); memset(&dc->port[i].ctrl_ul, 0, sizeof(struct ctrl_ul)); } @@ -798,7 +796,7 @@ static int send_data(enum port_type index, struct nozomi *dc) struct tty_struct *tty = tty_port_tty_get(&port->port); /* Get data from tty and place in buf for now */ - size = __kfifo_get(port->fifo_ul, dc->send_buf, + size = kfifo_out(&port->fifo_ul, dc->send_buf, ul_size < SEND_BUF_MAX ? ul_size : SEND_BUF_MAX); if (size == 0) { @@ -988,11 +986,11 @@ static int receive_flow_control(struct nozomi *dc) } else if (old_ctrl.CTS == 0 && ctrl_dl.CTS == 1) { - if (__kfifo_len(dc->port[port].fifo_ul)) { + if (kfifo_len(&dc->port[port].fifo_ul)) { DBG1("Enable interrupt (0x%04X) on port: %d", enable_ier, port); DBG1("Data in buffer [%d], enable transmit! ", - __kfifo_len(dc->port[port].fifo_ul)); + kfifo_len(&dc->port[port].fifo_ul)); enable_transmit_ul(port, dc); } else { DBG1("No data in buffer..."); @@ -1433,6 +1431,16 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev, goto err_free_sbuf; } + for (i = PORT_MDM; i < MAX_PORT; i++) { + if (kfifo_alloc(&dc->port[i].fifo_ul, + FIFO_BUFFER_SIZE_UL, GFP_ATOMIC)) { + dev_err(&pdev->dev, + "Could not allocate kfifo buffer\n"); + ret = -ENOMEM; + goto err_free_kfifo; + } + } + spin_lock_init(&dc->spin_mutex); nozomi_setup_private_data(dc); @@ -1445,7 +1453,7 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev, NOZOMI_NAME, dc); if (unlikely(ret)) { dev_err(&pdev->dev, "can't request irq %d\n", pdev->irq); - goto err_free_sbuf; + goto err_free_kfifo; } DBG1("base_addr: %p", dc->base_addr); @@ -1464,13 +1472,28 @@ static int __devinit nozomi_card_init(struct pci_dev *pdev, dc->state = NOZOMI_STATE_ENABLED; for (i = 0; i < MAX_PORT; i++) { + struct device *tty_dev; + mutex_init(&dc->port[i].tty_sem); tty_port_init(&dc->port[i].port); - tty_register_device(ntty_driver, dc->index_start + i, + tty_dev = tty_register_device(ntty_driver, dc->index_start + i, &pdev->dev); + + if (IS_ERR(tty_dev)) { + ret = PTR_ERR(tty_dev); + dev_err(&pdev->dev, "Could not allocate tty?\n"); + goto err_free_tty; + } } + return 0; +err_free_tty: + for (i = dc->index_start; i < dc->index_start + MAX_PORT; ++i) + tty_unregister_device(ntty_driver, i); +err_free_kfifo: + for (i = 0; i < MAX_PORT; i++) + kfifo_free(&dc->port[i].fifo_ul); err_free_sbuf: kfree(dc->send_buf); iounmap(dc->base_addr); @@ -1536,8 +1559,7 @@ static void __devexit nozomi_card_exit(struct pci_dev *pdev) free_irq(pdev->irq, dc); for (i = 0; i < MAX_PORT; i++) - if (dc->port[i].fifo_ul) - kfifo_free(dc->port[i].fifo_ul); + kfifo_free(&dc->port[i].fifo_ul); kfree(dc->send_buf); @@ -1629,10 +1651,10 @@ static void ntty_close(struct tty_struct *tty, struct file *file) dc->open_ttys--; port->count--; - tty_port_tty_set(port, NULL); if (port->count == 0) { DBG1("close: %d", nport->token_dl); + tty_port_tty_set(port, NULL); spin_lock_irqsave(&dc->spin_mutex, flags); dc->last_ier &= ~(nport->token_dl); writew(dc-&g |