A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

[PATCH] Correct misc_register return code handling in several drivers

Browse source 
Clean up several code points in which the return code from misc_register is
not handled properly.

Several modules failed to deregister various hooks when misc_register fails,
and this patch cleans them up.  Also there are a few modules that legitimately
don't care about the failure status of misc register.  These drivers however
unilaterally call misc_deregister on module unload.

Since misc_register doesn't initialize the list_head in the init_routine if it
fails, the deregister operation is at risk for oopsing when list_del is
called.  The initial solution was to manually init the list in the miscdev
structure in each of those modules, but the consensus in this thread was to
consolodate and do that universally inside misc_register.

Signed-off-by: Neil Horman <[email protected]>
Cc: Bjorn Helgaas <[email protected]>
Cc: Kylene Jo Hall <[email protected]>
Cc: Dmitry Torokhov <[email protected]>
Cc: Olaf Hering <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Neil Horman 2006-12-06 20:37:08 -08:00 • committed by Linus Torvalds
commit 5d469ec0f4
5 changed files with 26 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

3
drivers/macintosh/apm_emu.c
View file

@ -529,7 +529,8 @@ static int __init apm_emu_init(void)
if (apm_proc)
apm_proc->owner = THIS_MODULE;
misc_register(&apm_device);
if (misc_register(&apm_device) != 0)
printk(KERN_INFO "Could not create misc. device for apm\n");
pmu_register_sleep_notifier(&apm_sleep_notifier);