tree fe34a0db0cf9ee8194fda3c778a44d67e6c4b0a4
parent eed4a2aba7ff6d8c40d3d55b81f80352765ffcee
author Richard MUSIL <richard.musil@st.com> 1202290622 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1202323264 -0800

tpm.c: fix crash during device removal

The clean up procedure now uses platform device "release" callback to
handle memory clean up.  For this purpose "release" function callback was
added to struct tpm_vendor_specific, so hw device driver provider can get
called when it is safe to remove all allocated resources.

This is supposed to fix a bug in device removal, where device while in
receive function (waiting on timeout) was prone to segfault, if the
tpm_chip struct was unallocated before the timeout expired (in
tpm_remove_hardware).

Acked-by: Marcel Selhorst <tpm@selhorst.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>