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authorErwan Velu <e.velu@criteo.com>2019-03-21 10:49:27 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2019-05-20 10:56:43 -0400
commit8ef860ae55e96c9e8999a12c800d9fd1a91f66d7 (patch)
treeff641bb955522f2ac0486963147be9dabaa2fe6e /drivers/scsi
parent41552199b5518fe26bee0829a28dd1880441b430 (diff)
downloadlinux-8ef860ae55e96c9e8999a12c800d9fd1a91f66d7.tar.gz
scsi: smartpqi: Reporting unhandled SCSI errors
When a HARDWARE_ERROR is triggered for ASC=0x3e, the existing code is only considering the case where ASCQ=0x1. According to the http://www.t10.org/lists/asc-num.htm#ASC_3E specification, other values may occur like a timeout (ASCQ=0x2). This patch prints an error message when a non-handled message is received. This can help diagnose a possible misbehavior of the controller or a missing implementation in the Linux kernel. This patch keeps the exact same error handling but prints a message if an ASCQ != 1 is reported. [mkp: clarified commit message] Signed-off-by: Erwan Velu <e.velu@criteo.com> Acked-by: Don Brace <don.brace@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/smartpqi/smartpqi_init.c23
1 files changed, 16 insertions, 7 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c
index c26cac819f9e..b17761eafca9 100644
--- a/drivers/scsi/smartpqi/smartpqi_init.c
+++ b/drivers/scsi/smartpqi/smartpqi_init.c
@@ -2755,16 +2755,25 @@ static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
scsi_normalize_sense(error_info->data,
sense_data_length, &sshdr) &&
sshdr.sense_key == HARDWARE_ERROR &&
- sshdr.asc == 0x3e &&
- sshdr.ascq == 0x1) {
+ sshdr.asc == 0x3e) {
struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
struct pqi_scsi_dev *device = scmd->device->hostdata;
- if (printk_ratelimit())
- scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
- ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
- pqi_take_device_offline(scmd->device, "RAID");
- host_byte = DID_NO_CONNECT;
+ switch (sshdr.ascq) {
+ case 0x1: /* LOGICAL UNIT FAILURE */
+ if (printk_ratelimit())
+ scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
+ ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
+ pqi_take_device_offline(scmd->device, "RAID");
+ host_byte = DID_NO_CONNECT;
+ break;
+
+ default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
+ if (printk_ratelimit())
+ scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
+ sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
+ break;
+ }
}
if (sense_data_length > SCSI_SENSE_BUFFERSIZE)