korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-15 16:24:13 +08:00
Code Issues Packages Projects Releases Wiki Activity

driver core: do not wait unnecessarily in driver_unregister()

Browse Source 
Ingo reported that built-in drivers suffered bootup hangs with certain
driver unregistry sequences, due to sysfs breakage.

Do the minimal fix for v2.6.21: only wait if the driver is a module.

Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2007-04-01 10:54:13 -07:00
parent 755948cfca
commit f5ef2abcbe
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/base/driver.c
View File

@ -183,7 +183,14 @@ int driver_register(struct device_driver * drv)
void driver_unregister(struct device_driver * drv)
{
bus_remove_driver(drv);
wait_for_completion(&drv->unloaded);
/*
* If the driver is a module, we are probably in
* the module unload path, and we want to wait
* for everything to unload before we can actually
* finish the unload.
*/
if (drv->owner)
wait_for_completion(&drv->unloaded);
}
/**