]> err.no Git - linux-2.6/commit
[S390] lost interrupt after chpid vary off/on cycle.
authorPeter Oberparleiter <peter.oberparleiter@de.ibm.com>
Mon, 7 Aug 2006 15:00:33 +0000 (17:00 +0200)
committerMartin Schwidefsky <schwidefsky@de.ibm.com>
Mon, 7 Aug 2006 15:00:33 +0000 (17:00 +0200)
commit65200c291c4ce397835d8232eaa0878b765a9bce
tree32b6282ae63318d92c630f41a3ca6fd04e4bbbbf
parent4bc0c4f9e74e7a5d62ef4db923b377f2aa474a8f
[S390] lost interrupt after chpid vary off/on cycle.

I/O on a CCW device may stall if a channel path to that device is
logicaly varied off/on. A user I/O interrupt can get misinterpreted
as interrupt for an internal path verification operation due to a
missing check and is therefore never reported to the device driver.

Correct check for pending interruptions before starting path
verification.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
drivers/s390/cio/device_fsm.c