From 7eff2e7a8b65c25920207324e56611150eb1cd9a Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 14 Aug 2007 15:15:12 +0200 Subject: Driver core: change add_uevent_var to use a struct This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: Kay Sievers Cc: Mathieu Desnoyers Cc: Cornelia Huck Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug.c | 28 ++++++---------------------- drivers/pci/pci-driver.c | 3 +-- drivers/pci/pci.h | 3 +-- 3 files changed, 8 insertions(+), 26 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/hotplug.c b/drivers/pci/hotplug.c index 1c97e7d..2b5352a 100644 --- a/drivers/pci/hotplug.c +++ b/drivers/pci/hotplug.c @@ -3,12 +3,9 @@ #include #include "pci.h" -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { struct pci_dev *pdev; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -17,37 +14,24 @@ int pci_uevent(struct device *dev, char **envp, int num_envp, if (!pdev) return -ENODEV; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_CLASS=%04X", pdev->class)) + if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) + if (add_uevent_var(env, "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, + if (add_uevent_var(env, "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, pdev->subsystem_device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SLOT_NAME=%s", pci_name(pdev))) + if (add_uevent_var(env, "PCI_SLOT_NAME=%s", pci_name(pdev))) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", + if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", pdev->vendor, pdev->device, pdev->subsystem_vendor, pdev->subsystem_device, (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), (u8)(pdev->class))) return -ENOMEM; - - envp[i] = NULL; - return 0; } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 004bc24..f61be3a 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -532,8 +532,7 @@ void pci_dev_put(struct pci_dev *dev) } #ifndef CONFIG_HOTPLUG -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 4c36e80..b3a7d5b 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -1,7 +1,6 @@ /* Functions internal to the PCI core code */ -extern int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); extern void pci_cleanup_rom(struct pci_dev *dev); -- cgit v1.1 From 19c38de88a80913351fcacefdb461cc0b585fa87 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: kobjects: fix up improper use of the kobject name field A number of different drivers incorrect access the kobject name field directly. This is not correct as the name might not be in the array. Use the proper accessor function instead. --- drivers/pci/setup-irq.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/pci') diff --git a/drivers/pci/setup-irq.c b/drivers/pci/setup-irq.c index 568f187..05ca2ed 100644 --- a/drivers/pci/setup-irq.c +++ b/drivers/pci/setup-irq.c @@ -48,7 +48,7 @@ pdev_fixup_irq(struct pci_dev *dev, dev->irq = irq; pr_debug("PCI: fixup irq: (%s) got %d\n", - dev->dev.kobj.name, dev->irq); + kobject_name(&dev->dev.kobj), dev->irq); /* Always tell the device, so the driver knows what is the real IRQ to use; the device does not use it. */ -- cgit v1.1 From 34980ca8faebfcce31094eba6ffbb0113950361f Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: Drivers: clean up direct setting of the name of a kset A kset should not have its name set directly, so dynamically set the name at runtime. This is needed to remove the static array in the kobject structure which will be changed in a future patch. Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug/rpadlpar_sysfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c b/drivers/pci/hotplug/rpadlpar_sysfs.c index df07606..a080fed 100644 --- a/drivers/pci/hotplug/rpadlpar_sysfs.c +++ b/drivers/pci/hotplug/rpadlpar_sysfs.c @@ -129,17 +129,17 @@ struct kobj_type ktype_dlpar_io = { }; struct kset dlpar_io_kset = { - .kobj = {.name = DLPAR_KOBJ_NAME, - .ktype = &ktype_dlpar_io, + .kobj = {.ktype = &ktype_dlpar_io, .parent = &pci_hotplug_slots_subsys.kobj}, .ktype = &ktype_dlpar_io, }; int dlpar_sysfs_init(void) { + kobject_set_name(&dlpar_io_kset.kobj, DLPAR_KOBJ_NAME); if (kset_register(&dlpar_io_kset)) { printk(KERN_ERR "rpadlpar_io: cannot register kset for %s\n", - dlpar_io_kset.kobj.name); + kobject_name(&dlpar_io_kset.kobj)); return -EINVAL; } -- cgit v1.1 From 5a7ad7f044941316dc98eda2a087a12a7a50649d Mon Sep 17 00:00:00 2001 From: Tejun Heo Date: Thu, 20 Sep 2007 16:05:10 +0900 Subject: sysfs: kill sysfs_update_file() sysfs_update_file() depends on inode->i_mtime but sysfs iondes are now reclaimable making the reported modification time unreliable. There's only one user (pci hotplug) of this notification mechanism and it reportedly isn't utilized from userland. Kill sysfs_update_file(). Signed-off-by: Tejun Heo Acked-by: Cornelia Huck Signed-off-by: Greg Kroah-Hartman --- drivers/pci/hotplug/pci_hotplug_core.c | 60 ---------------------------------- 1 file changed, 60 deletions(-) (limited to 'drivers/pci') diff --git a/drivers/pci/hotplug/pci_hotplug_core.c b/drivers/pci/hotplug/pci_hotplug_core.c index bd433ef..f0eba53 100644 --- a/drivers/pci/hotplug/pci_hotplug_core.c +++ b/drivers/pci/hotplug/pci_hotplug_core.c @@ -694,66 +694,6 @@ int __must_check pci_hp_change_slot_info(struct hotplug_slot *slot, if ((slot == NULL) || (info == NULL)) return -ENODEV; - /* - * check all fields in the info structure, and update timestamps - * for the files referring to the fields that have now changed. - */ - if ((has_power_file(slot) == 0) && - (slot->info->power_status != info->power_status)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_power.attr); - if (retval) - return retval; - } - - if ((has_attention_file(slot) == 0) && - (slot->info->attention_status != info->attention_status)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_attention.attr); - if (retval) - return retval; - } - - if ((has_latch_file(slot) == 0) && - (slot->info->latch_status != info->latch_status)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_latch.attr); - if (retval) - return retval; - } - - if ((has_adapter_file(slot) == 0) && - (slot->info->adapter_status != info->adapter_status)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_presence.attr); - if (retval) - return retval; - } - - if ((has_address_file(slot) == 0) && - (slot->info->address != info->address)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_address.attr); - if (retval) - return retval; - } - - if ((has_max_bus_speed_file(slot) == 0) && - (slot->info->max_bus_speed != info->max_bus_speed)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_max_bus_speed.attr); - if (retval) - return retval; - } - - if ((has_cur_bus_speed_file(slot) == 0) && - (slot->info->cur_bus_speed != info->cur_bus_speed)) { - retval = sysfs_update_file(&slot->kobj, - &hotplug_slot_attr_cur_bus_speed.attr); - if (retval) - return retval; - } - memcpy (slot->info, info, sizeof (struct hotplug_slot_info)); return 0; -- cgit v1.1