tests/srp/rc: Make the SRP tests pass against kernel v5.7

Linux kernel commit 569334014370 ("scsi: core: Delete scsi_use_blk_mq")
removed the use_blk_mq sysfs attribute. Hence only write into the
use_blk_mq sysfs attribute if it exists.

Signed-off-by: Bart Van Assche <bvanassche@acm.org>

diff --git a/tests/srp/rc b/tests/srp/rc
index 07fa5e3a5f266cd221276ef0f81bab96e19e8e47..3b82363f4eee3398bfc63835a8d92eec2599af94 100755 (executable)
--- a/tests/srp/rc
+++ b/tests/srp/rc
@@ -102,7 +102,9 @@ use_blk_mq() {
        )
        (
                cd /sys/module/scsi_mod/parameters || return $?
-               echo "$scsi_mode" >use_blk_mq || return $?
+               if [ -e use_blk_mq ]; then
+                       echo "$scsi_mode" >use_blk_mq || return $?
+               fi
        )
 
        log_out &&