From 83097aca8567a0bd593534853b71fe0fa9a75d69 Mon Sep 17 00:00:00 2001 From: Arjan van de Ven Date: Sat, 23 Aug 2008 21:45:21 -0700 Subject: Fix oops in acer_wmi driver (acer_wmi_init) The acer_wmi driver does a DMI scan for quirks, and then sets flags into the "interface" datastructure for some cases. However, the quirks happen real early before "interface" is per se initialized from NULL. The patch below 1) adds a NULL pointer check and 2) (re)runs the quirks at the end, when "interface" has it's final value. Reported-by: kerneloops.org Acked-by: Carlos Corbacho CC: stable@vger.kernel.org Signed-off-by: Arjan van de Ven Signed-off-by: Linus Torvalds --- drivers/misc/acer-wmi.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'drivers/misc/acer-wmi.c') diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c index b2d9878dc3f0..c6c77a505ec1 100644 --- a/drivers/misc/acer-wmi.c +++ b/drivers/misc/acer-wmi.c @@ -192,6 +192,9 @@ static struct quirk_entry *quirks; static void set_quirks(void) { + if (!interface) + return; + if (quirks->mailled) interface->capability |= ACER_CAP_MAILLED; @@ -1237,6 +1240,8 @@ static int __init acer_wmi_init(void) return -ENODEV; } + set_quirks(); + if (platform_driver_register(&acer_platform_driver)) { printk(ACER_ERR "Unable to register platform driver.\n"); goto error_platform_register; -- cgit v1.2.3 From 39dbbb4523754df4a822c69191a848a03e556dc7 Mon Sep 17 00:00:00 2001 From: Russ Dill Date: Tue, 2 Sep 2008 14:35:40 -0700 Subject: acer-wmi: remove debugfs entries upon unloading The exit function neglects to remove debugfs entries, leading to a BUG on reload. [akpm@linux-foundation.org: cleanups] Signed-off-by: Russ Dill Acked-by: Carlos Corbacho Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/misc/acer-wmi.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/misc/acer-wmi.c') diff --git a/drivers/misc/acer-wmi.c b/drivers/misc/acer-wmi.c index c6c77a505ec1..d8b0d326e452 100644 --- a/drivers/misc/acer-wmi.c +++ b/drivers/misc/acer-wmi.c @@ -1189,7 +1189,7 @@ static int create_debugfs(void) return 0; error_debugfs: - remove_debugfs(); + remove_debugfs(); return -ENOMEM; } @@ -1272,6 +1272,7 @@ error_platform_register: static void __exit acer_wmi_exit(void) { remove_sysfs(acer_platform_device); + remove_debugfs(); platform_device_del(acer_platform_device); platform_driver_unregister(&acer_platform_driver); -- cgit v1.2.3