diff options
| author | George Spelvin <lkml@sdf.org> | 2020-07-03 15:19:57 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-07-08 00:50:52 -0400 |
| commit | 0cd0e57ec858edda580fb90b53df5269216b61b2 (patch) | |
| tree | 05f9c11d23e8f56cb62aa2752d97896722e29224 /drivers/s390/scsi | |
| parent | 919a295abf968cec6ffd3c629241b2e626cf0f5d (diff) | |
scsi: zfcp: Use prandom_u32_max() for backoff
We don't need crypto-grade random numbers for randomized backoffs. Instead
use prandom_u32_max(ep_ro) which generates a pseudo-random number uniformly
distributed in the interval [0, ep_ro).
Link: https://lore.kernel.org/r/8fc7c4c4069ff1783f4a9ccd84a923f581a09ec5.1593780621.git.bblock@linux.ibm.com
Reviewed-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: George Spelvin <lkml@sdf.org>
Signed-off-by: Benjamin Block <bblock@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/s390/scsi')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c index b018b61bd168..d24cafe02708 100644 --- a/drivers/s390/scsi/zfcp_fc.c +++ b/drivers/s390/scsi/zfcp_fc.c @@ -48,7 +48,7 @@ unsigned int zfcp_fc_port_scan_backoff(void) { if (!port_scan_backoff) return 0; - return get_random_int() % port_scan_backoff; + return prandom_u32_max(port_scan_backoff); } static void zfcp_fc_port_scan_time(struct zfcp_adapter *adapter) |