diff options
| author | Ken Xue <ken.xue@amd.com> | 2015-12-01 14:45:23 +0800 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2016-01-25 10:43:35 +0000 |
| commit | f711f9cb229f0ea90a47997cbeacd4f6a3dbc19e (patch) | |
| tree | 7ac633acfb23d6a2a26943e1b0b849e3f161d714 /include/linux | |
| parent | d0112a8335b4bc4f691429d56bbe88361425fbe7 (diff) | |
Revert "SCSI: Fix NULL pointer dereference in runtime PM"
commit 1c69d3b6eb73e466ecbb8edaf1bc7fd585b288da upstream.
This reverts commit 49718f0fb8c9 ("SCSI: Fix NULL pointer dereference in
runtime PM")
The old commit may lead to a issue that blk_{pre|post}_runtime_suspend and
blk_{pre|post}_runtime_resume may not be called in pairs.
Take sr device as example, when sr device goes to runtime suspend,
blk_{pre|post}_runtime_suspend will be called since sr device defined
pm->runtime_suspend. But blk_{pre|post}_runtime_resume will not be called
since sr device doesn't have pm->runtime_resume. so, sr device can not
resume correctly anymore.
More discussion can be found from below link.
http://marc.info/?l=linux-scsi&m=144163730531875&w=2
Signed-off-by: Ken Xue <Ken.Xue@amd.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Xiangliang Yu <Xiangliang.Yu@amd.com>
Cc: James E.J. Bottomley <JBottomley@odin.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Michael Terry <Michael.terry@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions