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Message-Id: <1196789243.9441.41.camel@localhost>
Date: Tue, 04 Dec 2007 18:27:23 +0100
From: Martin Schwidefsky <schwidefsky@...ibm.com>
To: torvalds@...ux-foundation.org
Cc: linux-kernel@...r.kernel.org, linux-s390@...r.kernel.org
Subject: Please pull git390 'for-linus' branch
Please pull from 'for-linus' branch of
git://git390.osdl.marist.edu/pub/scm/linux-2.6.git for-linus
to receive the following updates:
arch/s390/kernel/entry.S | 2 ++
arch/s390/kernel/setup.c | 4 +---
drivers/s390/block/dcssblk.c | 4 ++--
drivers/s390/cio/css.c | 1 +
drivers/s390/cio/device_id.c | 37 ++++++++++++++++++++++++++++---------
5 files changed, 34 insertions(+), 14 deletions(-)
Christian Borntraeger (2):
[S390] dcssblk: prevent early access without own make_request function
[S390] Fix compile error on 31bit without preemption
Cornelia Huck (1):
[S390] cio: Issue SenseID per path.
Heiko Carstens (1):
[S390] Make sure the restore psw masks are initialized.
Peter Oberparleiter (1):
[S390] cio: add missing reprobe loop end statement
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index b2b2edc..1a6dac8 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -1079,8 +1079,10 @@ cleanup_io_leave_insn:
.Lexecve_tail: .long execve_tail
.Ljump_table: .long pgm_check_table
.Lschedule: .long schedule
+#ifdef CONFIG_PREEMPT
.Lpreempt_schedule_irq:
.long preempt_schedule_irq
+#endif
.Ltrace: .long syscall_trace
.Lschedtail: .long schedule_tail
.Lsysc_table: .long sys_call_table
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 50f8f1e..577aa7d 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -486,9 +486,7 @@ static void setup_addressing_mode(void)
if (s390_noexec) {
printk("S390 execute protection active, ");
set_amode_and_uaccess(PSW_ASC_SECONDARY, PSW32_ASC_SECONDARY);
- return;
- }
- if (switch_amode) {
+ } else if (switch_amode) {
printk("S390 address spaces switched, ");
set_amode_and_uaccess(PSW_ASC_PRIMARY, PSW32_ASC_PRIMARY);
}
diff --git a/drivers/s390/block/dcssblk.c b/drivers/s390/block/dcssblk.c
index 5e083d1..15a5789 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 6db3108..c3df2cd 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 2f6bf46..156f3f9 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) {
--
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