• Guilherme G. Piccoli's avatar
    scsi: aacraid: fix PCI error recovery path · 911e572e
    Guilherme G. Piccoli authored
    During a PCI error recovery, if aac_check_health() is not aware that a
    PCI error happened and we have an offline PCI channel, it might trigger
    some errors (like NULL pointer dereference) and inhibit the error
    recovery process to complete.
    
    This patch makes the health check procedure aware of PCI channel issues,
    and in case of error recovery process, the function
    aac_adapter_check_health() returns -1 and let the recovery process to
    complete successfully. This patch was tested on upstream kernel
    v4.11-rc5 in PowerPC ppc64le architecture with adapter 9005:028d
    (VID:DID) - the error recovery procedure was able to recover fine.
    
    Fixes: 5c63f7f7 ("aacraid: Added EEH support")
    Cc: stable@vger.kernel.org # v4.6+
    Signed-off-by: default avatarGuilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
    Reviewed-by: default avatarDave Carroll <david.carroll@microsemi.com>
    Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
    911e572e
aacraid.h 75.8 KB