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authorLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-04 09:37:39 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-04 09:37:39 -0800
commit2254c2e0184c603f92fc9b81016ff4bb53da622d (patch)
treec1410c58f07f82e5203d46b52a705d321d1cba97 /drivers
parenta3aaabd6b402d8b0ede5aa4a040e9fdbbfdf9116 (diff)
parent7af0d6f753f5adf773f99470666b50490d3379f1 (diff)
Merge branch 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6
* 'for-linus' of git://git390.osdl.marist.edu/pub/scm/linux-2.6: [S390] Make sure the restore psw masks are initialized. [S390] Fix compile error on 31bit without preemption [S390] dcssblk: prevent early access without own make_request function [S390] cio: add missing reprobe loop end statement [S390] cio: Issue SenseID per path.
Diffstat (limited to 'drivers')
-rw-r--r--drivers/s390/block/dcssblk.c4
-rw-r--r--drivers/s390/cio/css.c1
-rw-r--r--drivers/s390/cio/device_id.c37
3 files changed, 31 insertions, 11 deletions
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 5e083d1f57e..15a5789b773 100644
--- a/drivers/s390/block/dcssblk.c
+++ b/drivers/s390/block/dcssblk.c
@@ -472,11 +472,11 @@ dcssblk_add_store(struct device *dev, struct device_attribute *attr, const char
if (rc)
goto unregister_dev;
- add_disk(dev_info->gd);
-
blk_queue_make_request(dev_info->dcssblk_queue, dcssblk_make_request);
blk_queue_hardsect_size(dev_info->dcssblk_queue, 4096);
+ add_disk(dev_info->gd);
+
switch (dev_info->segment_type) {
case SEG_TYPE_SR:
case SEG_TYPE_ER:
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 6db31089d2d..c3df2cd009a 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -451,6 +451,7 @@ static int reprobe_subchannel(struct subchannel_id schid, void *data)
break;
case -ENXIO:
case -ENOMEM:
+ case -EIO:
/* These should abort looping */
break;
default:
diff --git a/drivers/s390/cio/device_id.c b/drivers/s390/cio/device_id.c
index 2f6bf462425..156f3f9786b 100644
--- a/drivers/s390/cio/device_id.c
+++ b/drivers/s390/cio/device_id.c
@@ -113,6 +113,7 @@ __ccw_device_sense_id_start(struct ccw_device *cdev)
{
struct subchannel *sch;
struct ccw1 *ccw;
+ int ret;
sch = to_subchannel(cdev->dev.parent);
/* Setup sense channel program. */
@@ -124,9 +125,25 @@ __ccw_device_sense_id_start(struct ccw_device *cdev)
/* Reset device status. */
memset(&cdev->private->irb, 0, sizeof(struct irb));
- cdev->private->flags.intretry = 0;
- return cio_start(sch, ccw, LPM_ANYPATH);
+ /* Try on every path. */
+ ret = -ENODEV;
+ while (cdev->private->imask != 0) {
+ if ((sch->opm & cdev->private->imask) != 0 &&
+ cdev->private->iretry > 0) {
+ cdev->private->iretry--;
+ /* Reset internal retry indication. */
+ cdev->private->flags.intretry = 0;
+ ret = cio_start (sch, cdev->private->iccws,
+ cdev->private->imask);
+ /* ret is 0, -EBUSY, -EACCES or -ENODEV */
+ if (ret != -EACCES)
+ return ret;
+ }
+ cdev->private->imask >>= 1;
+ cdev->private->iretry = 5;
+ }
+ return ret;
}
void
@@ -136,7 +153,8 @@ ccw_device_sense_id_start(struct ccw_device *cdev)
memset (&cdev->private->senseid, 0, sizeof (struct senseid));
cdev->private->senseid.cu_type = 0xFFFF;
- cdev->private->iretry = 3;
+ cdev->private->imask = 0x80;
+ cdev->private->iretry = 5;
ret = __ccw_device_sense_id_start(cdev);
if (ret && ret != -EBUSY)
ccw_device_sense_id_done(cdev, ret);
@@ -252,13 +270,14 @@ ccw_device_sense_id_irq(struct ccw_device *cdev, enum dev_event dev_event)
ccw_device_sense_id_done(cdev, ret);
break;
case -EACCES: /* channel is not operational. */
+ sch->lpm &= ~cdev->private->imask;
+ cdev->private->imask >>= 1;
+ cdev->private->iretry = 5;
+ /* fall through. */
case -EAGAIN: /* try again. */
- cdev->private->iretry--;
- if (cdev->private->iretry > 0) {
- ret = __ccw_device_sense_id_start(cdev);
- if (ret == 0 || ret == -EBUSY)
- break;
- }
+ ret = __ccw_device_sense_id_start(cdev);
+ if (ret == 0 || ret == -EBUSY)
+ break;
/* fall through. */
default: /* Sense ID failed. Try asking VM. */
if (MACHINE_IS_VM) {