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scsi: smartpqi: revert propagate-the-multipath-failure-to-SML-quickly

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Correct a rare multipath failure issue by reverting commit 94a68c8143
("scsi: smartpqi: Quickly propagate path failures to SCSI midlayer") [1].

Reason for revert: The patch propagated the path failure to SML quickly
when one of the path fails during IO and AIO path gets disabled for a
multipath device.

But it created a new issue: when creating a volume on an encryption-enabled
controller, the firmware reports the AIO path is disabled, which cause the
driver to report a path failure to SML for a multipath device.

There will be a new fix to handle "Illegal request" and "Invalid field in
parameter list" on RAID path when the AIO path is disabled on a multipath
device.

[1] https://lore.kernel.org/all/164375209313.440833.9992416628621839233.stgit@brunhilda.pdev.net/

Fixes: 94a68c8143 ("scsi: smartpqi: Quickly propagate path failures to SCSI midlayer")
Reviewed-by: Scott Benesh <scott.benesh@microchip.com>
Reviewed-by: Scott Teel <scott.teel@microchip.com>
Reviewed-by: Mike McGowen <mike.mcgowen@microchip.com>
Signed-off-by: Gilbert Wu <Gilbert.Wu@microchip.com>
Signed-off-by: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/20240711194704.982400-4-don.brace@microchip.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Gilbert Wu 2024-07-11 14:47:02 -05:00 committed by Martin K. Petersen
parent bb0f5445b2
commit f1393d52e6
1 changed files with 2 additions and 18 deletions
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20
drivers/scsi/smartpqi/smartpqi_init.c
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@ -2365,14 +2365,6 @@ static inline void pqi_mask_device(u8 *scsi3addr)
scsi3addr[3] |= 0xc0;
}
static inline bool pqi_is_multipath_device(struct pqi_scsi_dev *device)
{
if (pqi_is_logical_device(device))
return false;
return (device->path_map & (device->path_map - 1)) != 0;
}
static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
{
return !device->is_physical_device || !pqi_skip_device(device->scsi3addr);
@ -3269,14 +3261,12 @@ static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
int residual_count;
int xfer_count;
bool device_offline;
struct pqi_scsi_dev *device;
scmd = io_request->scmd;
error_info = io_request->error_info;
host_byte = DID_OK;
sense_data_length = 0;
device_offline = false;
device = scmd->device->hostdata;
switch (error_info->service_response) {
case PQI_AIO_SERV_RESPONSE_COMPLETE:
@ -3301,14 +3291,8 @@ static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
break;
case PQI_AIO_STATUS_AIO_PATH_DISABLED:
pqi_aio_path_disabled(io_request);
if (pqi_is_multipath_device(device)) {
pqi_device_remove_start(device);
host_byte = DID_NO_CONNECT;
scsi_status = SAM_STAT_CHECK_CONDITION;
} else {
scsi_status = SAM_STAT_GOOD;
io_request->status = -EAGAIN;
}
scsi_status = SAM_STAT_GOOD;
io_request->status = -EAGAIN;
break;
case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
case PQI_AIO_STATUS_INVALID_DEVICE: