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| author | Sebastian Ott <sebott@linux.vnet.ibm.com> | 2015-09-21 19:40:33 +0300 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2015-10-14 15:32:04 +0300 |
| commit | 9d49f86daba3ed22cadf01beff1b130ad25fe0bf (patch) | |
| tree | 54d07327930ab0976c5aa1ee36281f07cd32c661 /drivers/s390/cio | |
| parent | ab97d211ef1863942a90d7c93dfd563f0381ca87 (diff) | |
| download | linux-9d49f86daba3ed22cadf01beff1b130ad25fe0bf.tar.xz | |
s390/cio: introduce pathmask_to_pos
We often need to correlate an 8 bit path mask with the position
in a channel path array. Introduce and use pathmask_to_pos for
that task.
Reviewed-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio')
| -rw-r--r-- | drivers/s390/cio/device_pgid.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c index 37ada05e82a5..148b3fadac00 100644 --- a/drivers/s390/cio/device_pgid.c +++ b/drivers/s390/cio/device_pgid.c @@ -133,7 +133,7 @@ static void spid_build_cp(struct ccw_device *cdev, u8 fn) { struct ccw_request *req = &cdev->private->req; struct ccw1 *cp = cdev->private->iccws; - int i = 8 - ffs(req->lpm); + int i = pathmask_to_pos(req->lpm); struct pgid *pgid = &cdev->private->pgid[i]; pgid->inf.fc = fn; @@ -434,7 +434,7 @@ static void snid_build_cp(struct ccw_device *cdev) { struct ccw_request *req = &cdev->private->req; struct ccw1 *cp = cdev->private->iccws; - int i = 8 - ffs(req->lpm); + int i = pathmask_to_pos(req->lpm); /* Channel program setup. */ cp->cmd_code = CCW_CMD_SENSE_PGID; |