diff options
| author |   Sebastian Ott <sebott@linux.vnet.ibm.com> | 2011-10-30 15:16:34 +0100 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:41 +0100 |
| commit | 75a1c61b434759bf8f2c0118151713b010b44705 (patch) | |
| tree | 2fc9367c5120deccac85ab524bcc111ca9e049c1 /drivers/s390/cio/ccwreq.c | |
| parent | [S390] use ENTRY macro for sys_setns_wrapper (diff) | |
| download | linux-dev-75a1c61b434759bf8f2c0118151713b010b44705.tar.xz linux-dev-75a1c61b434759bf8f2c0118151713b010b44705.zip | |
[S390] cio: add message for timeouts on internal I/O
Print a message in case we do not receive an IRQ in time (for internal
I/O). Also print the ID of the last used channel path, since it is
possible that not the device itself but this specific path might have
a defect.
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/ccwreq.c')
| -rw-r--r-- | drivers/s390/cio/ccwreq.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/s390/cio/ccwreq.c b/drivers/s390/cio/ccwreq.c index d15f8b4d78bd..5156264d0c74 100644 --- a/drivers/s390/cio/ccwreq.c +++ b/drivers/s390/cio/ccwreq.c @@ -1,10 +1,13 @@ /* * Handling of internal CCW device requests. * - * Copyright IBM Corp. 2009 + * Copyright IBM Corp. 2009, 2011 * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> */ +#define KMSG_COMPONENT "cio" +#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt + #include <linux/types.h> #include <linux/err.h> #include <asm/ccwdev.h> @@ -323,7 +326,21 @@ void ccw_request_timeout(struct ccw_device *cdev) { struct subchannel *sch = to_subchannel(cdev->dev.parent); struct ccw_request *req = &cdev->private->req; - int rc; + int rc = -ENODEV, chp; + + if (cio_update_schib(sch)) + goto err; + + for (chp = 0; chp < 8; chp++) { + if ((0x80 >> chp) & sch->schib.pmcw.lpum) + pr_warning("%s: No interrupt was received within %lus " + "(CS=%02x, DS=%02x, CHPID=%x.%02x)\n", + dev_name(&cdev->dev), req->timeout / HZ, + scsw_cstat(&sch->schib.scsw), + scsw_dstat(&sch->schib.scsw), + sch->schid.cssid, + sch->schib.pmcw.chpid[chp]); + } if (!ccwreq_next_path(cdev)) { /* set the final return code for this request */ @@ -342,7 +359,7 @@ err: * ccw_request_notoper - notoper handler for I/O request procedure * @cdev: ccw device * - * Handle timeout during I/O request procedure. + * Handle notoper during I/O request procedure. */ void ccw_request_notoper(struct ccw_device *cdev) { |