amd64_edac: Fix driver module removal
authorBorislav Petkov <borislav.petkov@amd.com>
Sun, 26 Sep 2010 10:42:23 +0000 (12:42 +0200)
committerBorislav Petkov <borislav.petkov@amd.com>
Mon, 27 Sep 2010 10:52:58 +0000 (12:52 +0200)
commit00740c58541b6087d78418cebca1fcb86dc6077d
tree0d66f4d50dac7ad66997429e1f6ed702ec74afa5
parentb30a3f6257ed2105259b404d419b4964e363928c
amd64_edac: Fix driver module removal

f4347553b30ec66530bfe63c84530afea3803396 removed the edac polling
mechanism in favor of using a notifier chain for conveying MCE
information to edac. However, the module removal path didn't test
whether the driver had setup the polling function workqueue at all and
the rmmod process was hanging in the kernel at try_to_del_timer_sync()
in the cancel_delayed_work() path, trying to cancel an uninitialized
work struct.

Fix that by adding a balancing check to the workqueue removal path.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
drivers/edac/edac_mc.c