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| author | Don Brace <don.brace@microchip.com> | 2023-04-28 10:37:08 -0500 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-05-08 07:17:11 -0400 |
| commit | c23efd9eadd8d07c0e88b52296d9f74350e7af7f (patch) | |
| tree | 3dfbf31cb7cad3f217b9c305bb0788a5844ae7be /drivers | |
| parent | 68f7920492be3d193d31b5a6b97e8501d2306b17 (diff) | |
| download | linux-c23efd9eadd8d07c0e88b52296d9f74350e7af7f.tar.gz linux-c23efd9eadd8d07c0e88b52296d9f74350e7af7f.tar.bz2 linux-c23efd9eadd8d07c0e88b52296d9f74350e7af7f.zip | |
scsi: smartpqi: Fix byte aligned writew for ARM servers
Correct OOPs on ARM servers during driver init.
The driver attempts to update FW with max_feature_supported value using a
writew() kernel call using a byte aligned address. This fails on some ARM
systems.
Change the writew() to two writeb() calls to update this value.
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: Don Brace <don.brace@microchip.com>
Link: https://lore.kernel.org/r/20230428153712.297638-9-don.brace@microchip.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 19a97bbf89b5..d3d4fc90dcae 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -7718,8 +7718,8 @@ static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info, features_requested_iomem_addr + (le16_to_cpu(firmware_features->num_elements) * 2) + sizeof(__le16); - writew(PQI_FIRMWARE_FEATURE_MAXIMUM, - host_max_known_feature_iomem_addr); + writeb(PQI_FIRMWARE_FEATURE_MAXIMUM & 0xFF, host_max_known_feature_iomem_addr); + writeb((PQI_FIRMWARE_FEATURE_MAXIMUM & 0xFF00) >> 8, host_max_known_feature_iomem_addr + 1); } return pqi_config_table_update(ctrl_info, |