shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-06 19:08:57 +09:00
Code Issues Packages Projects Releases Wiki Activity

floppy: check_events callback should not return a negative number

Browse Source 
[ Upstream commit 96d7cb932e ]

floppy_check_events() is supposed to return bit flags to say which
events occured. We should return zero to say that no event flags are
set.  Only BIT(0) and BIT(1) are used in the caller. And .check_events
interface also expect to return an unsigned int value.

However, after commit a0c80efe59, it may return -EINTR (-4u).
Here, both BIT(0) and BIT(1) are cleared. So this patch shouldn't
affect runtime, but it obviously is still worth fixing.

Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: a0c80efe59 ("floppy: fix lock_fdc() signal handling")
Signed-off-by: Yufen Yu <yuyufen@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yufen Yu
2019-01-29 16:34:04 +08:00
committed by Chris
parent 7ebd226b6b
commit ad7d918f83
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/block/floppy.c
View File

@@ -3752,7 +3752,7 @@ static unsigned int floppy_check_events(struct gendisk *disk,
if (time_after(jiffies, UDRS->last_checked + UDP->checkfreq)) {
if (lock_fdc(drive))
return -EINTR;
return 0;
poll_drive(false, 0);
process_fd_request();
}