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aacraid: Set correct msix count for EEH recovery

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commit ecc479e00db8eb110b200afe1effcb3df20ca7ae upstream.

During EEH recovery number of online CPU's might change thereby changing
the number of MSIx vectors. Since each fib is allocated to a vector,
changes in the number of vectors causes fib to be sent thru invalid
vectors.In addition the correct number of MSIx vectors is not updated in
the INIT struct sent to the controller, when it is reinitialized.

Fixed by reassigning vectors to fibs based on the updated number of MSIx
vectors and updating the INIT structure before sending to controller.

Fixes: MSI-X vector calculation for suspend/resume
Signed-off-by: Raghava Aditya Renukunta <raghavaaditya.renukunta@pmcs.com>
Reviewed-by: Shane Seymour <shane.seymour@hpe.com>
Reviewed-by: Johannes Thumshirn <jthushirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Raghava Aditya Renukunta 2016-02-03 15:06:03 -08:00 committed by Greg Kroah-Hartman
parent f3a3019dfc
commit e468298bd4
1 changed files with 11 additions and 1 deletions
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12
drivers/scsi/aacraid/linit.c
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@ -1404,8 +1404,18 @@ static int aac_acquire_resources(struct aac_dev *dev)
aac_adapter_enable_int(dev);
if (!dev->sync_mode)
/*max msix may change after EEH
* Re-assign vectors to fibs
*/
aac_fib_vector_assign(dev);
if (!dev->sync_mode) {
/* After EEH recovery or suspend resume, max_msix count
* may change, therfore updating in init as well.
*/
aac_adapter_start(dev);
dev->init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix);
}
return 0;
error_iounmap: