diff options
| author | Damien Le Moal <damien.lemoal@wdc.com> | 2021-08-16 10:44:47 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-22 11:47:50 +0200 |
| commit | 0dfadcf9e9e4dc072fd328ea34fe1830993b425b (patch) | |
| tree | 8b8f63e718ef0b034df33a97011fa843b0ecf4a3 /drivers/ata | |
| parent | cf5b3bd01970a902f25f66704713ae2893898119 (diff) | |
libata: fix ata_host_start()
[ Upstream commit 355a8031dc174450ccad2a61c513ad7222d87a97 ]
The loop on entry of ata_host_start() may not initialize host->ops to a
non NULL value. The test on the host_stop field of host->ops must then
be preceded by a check that host->ops is not NULL.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Damien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210816014456.2191776-3-damien.lemoal@wdc.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index db1d86af21b4..d9b1c3e95592 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6412,7 +6412,7 @@ int ata_host_start(struct ata_host *host) have_stop = 1; } - if (host->ops->host_stop) + if (host->ops && host->ops->host_stop) have_stop = 1; if (have_stop) { |