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[PATCH] ide: Fix crash on repeated reset

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Michal Miroslaw reported a problem (bugzilla #7023) where a user initiated
reset while the IDE layer was already resetting the channel caused a crash,
and provided a rough fix.

This is a slightly cleaner version of the fix which tracks the reset state
and blocks further reset requests while a reset is in progress.

Note this is not a security issue - random end users can't access the
ioctl in question anyway.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Michal Miroslaw <mirq-linux@rere.qmqm.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Alan Cox 2006-10-03 01:14:33 -07:00 • committed by Linus Torvalds
parent b86cc29dc4
commit 913759ac90
3 changed files with 12 additions and 0 deletions
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3
include/linux/ide.h
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@ -825,6 +825,9 @@ typedef struct hwgroup_s {
unsigned int sleeping : 1;
/* BOOL: polling active & poll_timeout field valid */
unsigned int polling : 1;
/* BOOL: in a polling reset situation. Must not trigger another reset yet */
unsigned int resetting : 1;
/* current drive */
ide_drive_t *drive;
/* ptr to current hwif in linked-list */