cciss: Fallback to MSI rather than to INTx if MSI-X failed
cciss: Fallback to MSI rather than to INTx if MSI-X failed

Currently the driver falls back to INTx mode when MSI-X
initialization failed. This is a suboptimal behaviour
for chips that also support MSI. This update changes that
behaviour and falls back to MSI mode in case MSI-X mode
initialization failed.

Signed-off-by: Alexander Gordeev <840ef8418a045e2a597676027ea56f79bb2faf20@redhat.com>
Cc: Mike Miller <c28c07c691c461fe54fd156fcc630667c36021bc@hp.com>
Cc: e6fffdc32ea9903c120c9680f5ff60fb54f48a46@hp.com
Cc: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>
Cc: c6ec3e7b985c17ad0107cdbe9b999c23f1042f60@vger.kernel.org
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@fb.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs