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authorSebastian Ott <sebott@linux.vnet.ibm.com>2010-08-09 20:12:53 +0400
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-08-09 20:12:54 +0400
commit982bdf814616bec77c920e16ea4108d409f144ed (patch)
tree7aee4e1dde2001ca5415103778fb95e93c3d2065 /drivers/s390/cio/device_pgid.c
parent7cd403142d5dbffa354b7dd369b1069e01b1ae19 (diff)
downloadlinux-982bdf814616bec77c920e16ea4108d409f144ed.tar.xz
[S390] ccwreq: add ability to use all paths
Change the ccwrequest infrastructure to use more than one channel path per start I/O. A flag "singlepath" is added to struct ccw_request - if set, the old behavior is used. This flag is set for all exploiters of the ccwrequest infrastructure - so there is no functional change through this patch. 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/device_pgid.c')
-rw-r--r--drivers/s390/cio/device_pgid.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/s390/cio/device_pgid.c b/drivers/s390/cio/device_pgid.c
index 6facb5499a65..f1fdf0ec7f03 100644
--- a/drivers/s390/cio/device_pgid.c
+++ b/drivers/s390/cio/device_pgid.c
@@ -208,6 +208,7 @@ static void spid_start(struct ccw_device *cdev)
req->timeout = PGID_TIMEOUT;
req->maxretries = PGID_RETRIES;
req->lpm = 0x80;
+ req->singlepath = 1;
req->callback = spid_callback;
spid_do(cdev);
}
@@ -420,6 +421,7 @@ static void verify_start(struct ccw_device *cdev)
req->timeout = PGID_TIMEOUT;
req->maxretries = PGID_RETRIES;
req->lpm = 0x80;
+ req->singlepath = 1;
if (cdev->private->flags.pgroup) {
CIO_TRACE_EVENT(4, "snid");
CIO_HEX_EVENT(4, devid, sizeof(*devid));
@@ -507,6 +509,7 @@ void ccw_device_disband_start(struct ccw_device *cdev)
req->timeout = PGID_TIMEOUT;
req->maxretries = PGID_RETRIES;
req->lpm = sch->schib.pmcw.pam & sch->opm;
+ req->singlepath = 1;
req->callback = disband_callback;
fn = SPID_FUNC_DISBAND;
if (cdev->private->flags.mpath)
@@ -560,6 +563,7 @@ void ccw_device_stlck_start(struct ccw_device *cdev, void *data, void *buf1,
req->timeout = PGID_TIMEOUT;
req->maxretries = PGID_RETRIES;
req->lpm = sch->schib.pmcw.pam & sch->opm;
+ req->singlepath = 1;
req->data = data;
req->callback = stlck_callback;
stlck_build_cp(cdev, buf1, buf2);