kernel.git/drivers/s390/cio, branch linux-3.7.y

s390/cio: fix pgid reserved check

2013-01-17T16:45:54Z

commit d99e79ec5574fc556c988f613ed6175f6de66f4a upstream. The check to whom a device is reserved is done by checking the path state of the affected channel paths. If it turns out that one path is flagged as reserved by someone else the whole device is marked as such. However the meaning of the RESVD_ELSE bit is that the addressed device is reserved to a different pathgroup (and not reserved to a different LPAR). If we do this test on a path which is currently not a member of the pathgroup we could erroneously mark the device as reserved to someone else. To fix this collect the reserved state for all potential members of the pathgroup and only mark the device as reserved if all of those potential members have the RESVD_ELSE bit set. Acked-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky Signed-off-by: Greg Kroah-Hartman

s390/cio: fix length calculation in idset.c

2012-11-06T21:39:54Z

bitmap_or uses the number of bits as its length parameter and not the number of words necessary to store those bits. This fixes a regression introduced by: aa92b33 s390/cio: use generic bitmap functions Reported-by: Christian Ehrhardt Acked-by: Peter Oberparleiter Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390: Move css limits from drivers/s390/cio/ to include/asm/.

2012-11-06T21:39:49Z

There's no need to keep __MAX_SUBCHANNEL and __MAX_SSID private to the common I/O layer when __MAX_CSSID is usable by everybody. Signed-off-by: Cornelia Huck Signed-off-by: Martin Schwidefsky

s390/cio: suppress 2nd path verification during resume

2012-10-26T14:44:22Z

Do not trigger a path verification in the subchannel event function during resume from hibernate. This will be started by the pm_restore callback later. Signed-off-by: Sebastian Ott Reviewed-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky

s390/css: stop stsch loop after cc 3

2012-10-18T15:50:08Z

Receiving cc=3 from store subchannel means 2 things: * the subchannel is not provided * there are no further subchannels in this subchannel set With this patch we abort the store subchannel loop after cc=3 (or an exception) and clear the subsequent bits in the subchannel id set. Reported-by: Cornelia Huck Signed-off-by: Sebastian Ott Acked-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky

s390/cio: use generic bitmap functions

2012-10-18T15:50:08Z

Use generic bitmap functions in the subchannel id bitmap to simplify and de-bloat the code. Signed-off-by: Sebastian Ott Acked-by: Peter Oberparleiter Signed-off-by: Martin Schwidefsky

s390: add uninitialized_var() to suppress false positive compiler warnings

2012-09-26T13:45:23Z

Get rid of these: arch/s390/kernel/smp.c:134:19: warning: ‘status’ may be used uninitialized in this function [-Wuninitialized] arch/s390/mm/pgtable.c:641:10: warning: ‘table’ may be used uninitialized in this function [-Wuninitialized] arch/s390/mm/pgtable.c:644:12: warning: ‘page’ may be used uninitialized in this function [-Wuninitialized] drivers/s390/cio/cio.c:1037:14: warning: ‘schid’ may be used uninitialized in this function [-Wuninitialized] Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky

s390/qdio: fix truncated debug output of hex values

2012-09-26T13:45:18Z

Calling debug_event the s390 debug feature only logs up to buf_size bytes of the debug view. If debug_event is called with more bytes than buf_size the additional data is ignored and not logged in the debug view. Use multiple calls to debug_event if the length exceeds buf_size. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky

s390/scm: remove superfluous lock

2012-09-26T13:45:09Z

Remove the spinlock from struct scm_device. drvdata and attributes are guarded via device_lock. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky

s390/eadm_sch: add support for irq statistics

2012-09-26T13:45:00Z

Add support for EADM interrupt statistics in /proc/interrupts. Signed-off-by: Sebastian Ott Signed-off-by: Martin Schwidefsky