diff options
Diffstat (limited to 'drivers/edac/edac_pci_sysfs.c')
| -rw-r--r-- | drivers/edac/edac_pci_sysfs.c | 129 |
1 files changed, 70 insertions, 59 deletions
diff --git a/drivers/edac/edac_pci_sysfs.c b/drivers/edac/edac_pci_sysfs.c index 71c3195d370..e8658e45176 100644 --- a/drivers/edac/edac_pci_sysfs.c +++ b/drivers/edac/edac_pci_sysfs.c @@ -7,7 +7,8 @@ * */ #include <linux/module.h> -#include <linux/sysdev.h> +#include <linux/edac.h> +#include <linux/slab.h> #include <linux/ctype.h> #include "edac_core.h" @@ -28,7 +29,7 @@ static int edac_pci_poll_msec = 1000; /* one second workq period */ static atomic_t pci_parity_count = ATOMIC_INIT(0); static atomic_t pci_nonparity_count = ATOMIC_INIT(0); -static struct kobject edac_pci_top_main_kobj; +static struct kobject *edac_pci_top_main_kobj; static atomic_t edac_pci_sysfs_refcount = ATOMIC_INIT(0); /* getter functions for the data variables */ @@ -37,17 +38,17 @@ int edac_pci_get_check_errors(void) return check_pci_errors; } -int edac_pci_get_log_pe(void) +static int edac_pci_get_log_pe(void) { return edac_pci_log_pe; } -int edac_pci_get_log_npe(void) +static int edac_pci_get_log_npe(void) { return edac_pci_log_npe; } -int edac_pci_get_panic_on_pe(void) +static int edac_pci_get_panic_on_pe(void) { return edac_pci_panic_on_pe; } @@ -77,13 +78,13 @@ static void edac_pci_instance_release(struct kobject *kobj) { struct edac_pci_ctl_info *pci; - debugf0("%s()\n", __func__); + edac_dbg(0, "\n"); /* Form pointer to containing struct, the pci control struct */ pci = to_instance(kobj); /* decrement reference count on top main kobj */ - kobject_put(&edac_pci_top_main_kobj); + kobject_put(edac_pci_top_main_kobj); kfree(pci); /* Free the control struct */ } @@ -121,7 +122,7 @@ static ssize_t edac_pci_instance_store(struct kobject *kobj, } /* fs_ops table */ -static struct sysfs_ops pci_instance_ops = { +static const struct sysfs_ops pci_instance_ops = { .show = edac_pci_instance_show, .store = edac_pci_instance_store }; @@ -160,13 +161,13 @@ static int edac_pci_create_instance_kobj(struct edac_pci_ctl_info *pci, int idx) struct kobject *main_kobj; int err; - debugf0("%s()\n", __func__); + edac_dbg(0, "\n"); /* First bump the ref count on the top main kobj, which will * track the number of PCI instances we have, and thus nest * properly on keeping the module loaded */ - main_kobj = kobject_get(&edac_pci_top_main_kobj); + main_kobj = kobject_get(edac_pci_top_main_kobj); if (!main_kobj) { err = -ENODEV; goto error_out; @@ -174,16 +175,15 @@ static int edac_pci_create_instance_kobj(struct edac_pci_ctl_info *pci, int idx) /* And now register this new kobject under the main kobj */ err = kobject_init_and_add(&pci->kobj, &ktype_pci_instance, - &edac_pci_top_main_kobj, "pci%d", idx); + edac_pci_top_main_kobj, "pci%d", idx); if (err != 0) { - debugf2("%s() failed to register instance pci%d\n", - __func__, idx); - kobject_put(&edac_pci_top_main_kobj); + edac_dbg(2, "failed to register instance pci%d\n", idx); + kobject_put(edac_pci_top_main_kobj); goto error_out; } kobject_uevent(&pci->kobj, KOBJ_ADD); - debugf1("%s() Register instance 'pci%d' kobject\n", __func__, idx); + edac_dbg(1, "Register instance 'pci%d' kobject\n", idx); return 0; @@ -197,9 +197,10 @@ error_out: * * unregister the kobj for the EDAC PCI instance */ -void edac_pci_unregister_sysfs_instance_kobj(struct edac_pci_ctl_info *pci) +static void edac_pci_unregister_sysfs_instance_kobj( + struct edac_pci_ctl_info *pci) { - debugf0("%s()\n", __func__); + edac_dbg(0, "\n"); /* Unregister the instance kobject and allow its release * function release the main reference count and then @@ -255,12 +256,12 @@ static ssize_t edac_pci_dev_store(struct kobject *kobj, struct edac_pci_dev_attribute *edac_pci_dev; edac_pci_dev = (struct edac_pci_dev_attribute *)attr; - if (edac_pci_dev->show) + if (edac_pci_dev->store) return edac_pci_dev->store(edac_pci_dev->value, buffer, count); return -EIO; } -static struct sysfs_ops edac_pci_sysfs_ops = { +static const struct sysfs_ops edac_pci_sysfs_ops = { .show = edac_pci_dev_show, .store = edac_pci_dev_store }; @@ -315,8 +316,9 @@ static struct edac_pci_dev_attribute *edac_pci_attr[] = { */ static void edac_pci_release_main_kobj(struct kobject *kobj) { + edac_dbg(0, "here to module_put(THIS_MODULE)\n"); - debugf0("%s() here to module_put(THIS_MODULE)\n", __func__); + kfree(kobj); /* last reference to top EDAC PCI kobject has been removed, * NOW release our ref count on the core module @@ -335,25 +337,25 @@ static struct kobj_type ktype_edac_pci_main_kobj = { * edac_pci_main_kobj_setup() * * setup the sysfs for EDAC PCI attributes - * assumes edac_class has already been initialized + * assumes edac_subsys has already been initialized */ -int edac_pci_main_kobj_setup(void) +static int edac_pci_main_kobj_setup(void) { int err; - struct sysdev_class *edac_class; + struct bus_type *edac_subsys; - debugf0("%s()\n", __func__); + edac_dbg(0, "\n"); /* check and count if we have already created the main kobject */ if (atomic_inc_return(&edac_pci_sysfs_refcount) != 1) return 0; /* First time, so create the main kobject and its - * controls and atributes + * controls and attributes */ - edac_class = edac_get_edac_class(); - if (edac_class == NULL) { - debugf1("%s() no edac_class\n", __func__); + edac_subsys = edac_get_sysfs_subsys(); + if (edac_subsys == NULL) { + edac_dbg(1, "no edac_subsys\n"); err = -ENODEV; goto decrement_count_fail; } @@ -363,16 +365,24 @@ int edac_pci_main_kobj_setup(void) * level main kobj for EDAC PCI */ if (!try_module_get(THIS_MODULE)) { - debugf1("%s() try_module_get() failed\n", __func__); + edac_dbg(1, "try_module_get() failed\n"); err = -ENODEV; - goto decrement_count_fail; + goto mod_get_fail; + } + + edac_pci_top_main_kobj = kzalloc(sizeof(struct kobject), GFP_KERNEL); + if (!edac_pci_top_main_kobj) { + edac_dbg(1, "Failed to allocate\n"); + err = -ENOMEM; + goto kzalloc_fail; } /* Instanstiate the pci object */ - err = kobject_init_and_add(&edac_pci_top_main_kobj, &ktype_edac_pci_main_kobj, - &edac_class->kset.kobj, "pci"); + err = kobject_init_and_add(edac_pci_top_main_kobj, + &ktype_edac_pci_main_kobj, + &edac_subsys->dev_root->kobj, "pci"); if (err) { - debugf1("Failed to register '.../edac/pci'\n"); + edac_dbg(1, "Failed to register '.../edac/pci'\n"); goto kobject_init_and_add_fail; } @@ -380,15 +390,21 @@ int edac_pci_main_kobj_setup(void) * for EDAC PCI, then edac_pci_main_kobj_teardown() * must be used, for resources to be cleaned up properly */ - kobject_uevent(&edac_pci_top_main_kobj, KOBJ_ADD); - debugf1("Registered '.../edac/pci' kobject\n"); + kobject_uevent(edac_pci_top_main_kobj, KOBJ_ADD); + edac_dbg(1, "Registered '.../edac/pci' kobject\n"); return 0; /* Error unwind statck */ kobject_init_and_add_fail: + kfree(edac_pci_top_main_kobj); + +kzalloc_fail: module_put(THIS_MODULE); +mod_get_fail: + edac_put_sysfs_subsys(); + decrement_count_fail: /* if are on this error exit, nothing to tear down */ atomic_dec(&edac_pci_sysfs_refcount); @@ -404,16 +420,16 @@ decrement_count_fail: */ static void edac_pci_main_kobj_teardown(void) { - debugf0("%s()\n", __func__); + edac_dbg(0, "\n"); /* Decrement the count and only if no more controller instances * are connected perform the unregisteration of the top level * main kobj */ if (atomic_dec_return(&edac_pci_sysfs_refcount) == 0) { - debugf0("%s() called kobject_put on main kobj\n", - __func__); - kobject_put(&edac_pci_top_main_kobj); + edac_dbg(0, "called kobject_put on main kobj\n"); + kobject_put(edac_pci_top_main_kobj); + edac_put_sysfs_subsys(); } } @@ -428,7 +444,7 @@ int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci) int err; struct kobject *edac_kobj = &pci->kobj; - debugf0("%s() idx=%d\n", __func__, pci->pci_idx); + edac_dbg(0, "idx=%d\n", pci->pci_idx); /* create the top main EDAC PCI kobject, IF needed */ err = edac_pci_main_kobj_setup(); @@ -442,8 +458,7 @@ int edac_pci_create_sysfs(struct edac_pci_ctl_info *pci) err = sysfs_create_link(edac_kobj, &pci->dev->kobj, EDAC_PCI_SYMLINK); if (err) { - debugf0("%s() sysfs_create_link() returned err= %d\n", - __func__, err); + edac_dbg(0, "sysfs_create_link() returned err= %d\n", err); goto symlink_fail; } @@ -466,7 +481,7 @@ unregister_cleanup: */ void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci) { - debugf0("%s() index=%d\n", __func__, pci->pci_idx); + edac_dbg(0, "index=%d\n", pci->pci_idx); /* Remove the symlink */ sysfs_remove_link(&pci->kobj, EDAC_PCI_SYMLINK); @@ -478,7 +493,7 @@ void edac_pci_remove_sysfs(struct edac_pci_ctl_info *pci) * if this 'pci' is the last instance. * If it is, the main kobject will be unregistered as a result */ - debugf0("%s() calling edac_pci_main_kobj_teardown()\n", __func__); + edac_dbg(0, "calling edac_pci_main_kobj_teardown()\n"); edac_pci_main_kobj_teardown(); } @@ -521,8 +536,6 @@ static void edac_pci_dev_parity_clear(struct pci_dev *dev) { u8 header_type; - debugf0("%s()\n", __func__); - get_pci_parity_status(dev, 0); /* read the device TYPE, looking for bridges */ @@ -535,7 +548,7 @@ static void edac_pci_dev_parity_clear(struct pci_dev *dev) /* * PCI Parity polling * - * Fucntion to retrieve the current parity status + * Function to retrieve the current parity status * and decode it * */ @@ -556,7 +569,7 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) local_irq_restore(flags); - debugf4("PCI STATUS= 0x%04x %s\n", status, dev->dev.bus_id); + edac_dbg(4, "PCI STATUS= 0x%04x %s\n", status, dev_name(&dev->dev)); /* check the status reg for errors on boards NOT marked as broken * if broken, we cannot trust any of the status bits @@ -587,13 +600,15 @@ static void edac_pci_dev_parity_test(struct pci_dev *dev) } - debugf4("PCI HEADER TYPE= 0x%02x %s\n", header_type, dev->dev.bus_id); + edac_dbg(4, "PCI HEADER TYPE= 0x%02x %s\n", + header_type, dev_name(&dev->dev)); if ((header_type & 0x7F) == PCI_HEADER_TYPE_BRIDGE) { /* On bridges, need to examine secondary status register */ status = get_pci_parity_status(dev, 1); - debugf4("PCI SEC_STATUS= 0x%04x %s\n", status, dev->dev.bus_id); + edac_dbg(4, "PCI SEC_STATUS= 0x%04x %s\n", + status, dev_name(&dev->dev)); /* check the secondary status reg for errors, * on NOT broken boards @@ -630,20 +645,16 @@ typedef void (*pci_parity_check_fn_t) (struct pci_dev *dev); /* * pci_dev parity list iterator - * Scan the PCI device list for one pass, looking for SERRORs - * Master Parity ERRORS or Parity ERRORs on primary or secondary devices + * + * Scan the PCI device list looking for SERRORs, Master Parity ERRORS or + * Parity ERRORs on primary or secondary devices. */ static inline void edac_pci_dev_parity_iterator(pci_parity_check_fn_t fn) { struct pci_dev *dev = NULL; - /* request for kernel access to the next PCI device, if any, - * and while we are looking at it have its reference count - * bumped until we are done with it - */ - while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) { + for_each_pci_dev(dev) fn(dev); - } } /* @@ -655,7 +666,7 @@ void edac_pci_do_parity_check(void) { int before_count; - debugf3("%s()\n", __func__); + edac_dbg(3, "\n"); /* if policy has PCI check off, leave now */ if (!check_pci_errors) |