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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-06-18 13:12:20 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-21 09:07:15 +0200 |
| commit | 970871c643fc8ba2b0eabe740303c8a155b35e22 (patch) | |
| tree | 1e40c4edf8c78937b584133cce2bc3f1cef2b348 /drivers/scsi/device_handler/scsi_dh.c | |
| parent | ff5e6f2e7497e93aa5be513634c9de789bd2d3cc (diff) | |
| download | linux-stable-970871c643fc8ba2b0eabe740303c8a155b35e22.tar.gz linux-stable-970871c643fc8ba2b0eabe740303c8a155b35e22.tar.bz2 linux-stable-970871c643fc8ba2b0eabe740303c8a155b35e22.zip | |
s390/qdio: don't touch the dsci in tiqdio_add_input_queues()
commit ac6639cd3db607d386616487902b4cc1850a7be5 upstream.
Current code sets the dsci to 0x00000080. Which doesn't make any sense,
as the indicator area is located in the _left-most_ byte.
Worse: if the dsci is the _shared_ indicator, this potentially clears
the indication of activity for a _different_ device.
tiqdio_thinint_handler() will then have no reason to call that device's
IRQ handler, and the device ends up stalling.
Fixes: d0c9d4a89fff ("[S390] qdio: set correct bit in dsci")
Cc: <stable@vger.kernel.org>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/scsi/device_handler/scsi_dh.c')
0 files changed, 0 insertions, 0 deletions