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authorDamien Le Moal <damien.lemoal@wdc.com>2021-08-16 04:44:47 +0300
committerJens Axboe <axboe@kernel.dk>2021-08-18 16:19:39 +0300
commit355a8031dc174450ccad2a61c513ad7222d87a97 (patch)
tree3116d94999fa02c7ff81590e97950c371a719e0f /drivers/ata
parent3ad4a31620355358316fa08fcfab37b9d6c33347 (diff)
downloadlinux-355a8031dc174450ccad2a61c513ad7222d87a97.tar.xz
libata: fix ata_host_start()
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>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libata-core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 61c762961ca8..44f434acfce0 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5573,7 +5573,7 @@ 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) {