diff options
| author |   Heiko Carstens <heiko.carstens@de.ibm.com> | 2015-08-17 07:59:47 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-08-19 10:40:26 +0200 |
| commit | e4e1899aaec0370aea6b98597ee6289d60544ae2 (patch) | |
| tree | a25d5c833d1f0d00a5ab87e2c50c205ee11e765e /drivers/s390 | |
| parent | s390/hmcdrv: fix interrupt registration (diff) | |
| download | linux-dev-e4e1899aaec0370aea6b98597ee6289d60544ae2.tar.xz linux-dev-e4e1899aaec0370aea6b98597ee6289d60544ae2.zip | |
s390/zcrypt: use msleep() instead of mdelay()
There is no need to busy loop and monopolize a cpu for up to ~2 seconds.
The code in question that calls mdelay() is preemptible anyway, so better
let the kernel schedule different processes than just looping and causing
unnecessary delays.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/crypto/ap_bus.c | 2 | ||||
| -rw-r--r-- | drivers/s390/crypto/zcrypt_pcixcc.c | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 559a9dcdb15d..d78b3d629d78 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -1372,7 +1372,7 @@ static int ap_probe_device_type(struct ap_device *ap_dev) /* Wait for the test message to complete. */ for (i = 0; i < 6; i++) { - mdelay(300); + msleep(300); status = __ap_recv(ap_dev->qid, &psmid, reply, 4096); if (status.response_code == AP_RESPONSE_NORMAL && psmid == 0x0102030405060708ULL) diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c index 899ffa19f5ec..f41852768953 100644 --- a/drivers/s390/crypto/zcrypt_pcixcc.c +++ b/drivers/s390/crypto/zcrypt_pcixcc.c @@ -182,7 +182,7 @@ static int zcrypt_pcixcc_mcl(struct ap_device *ap_dev) /* Wait for the test message to complete. */ for (i = 0; i < 6; i++) { - mdelay(300); + msleep(300); rc = ap_recv(ap_dev->qid, &psmid, reply, 4096); if (rc == 0 && psmid == 0x0102030405060708ULL) break; |