From c23efd9eadd8d07c0e88b52296d9f74350e7af7f Mon Sep 17 00:00:00 2001 From: Don Brace Date: Fri, 28 Apr 2023 10:37:08 -0500 Subject: [PATCH] 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 Reviewed-by: Scott Teel Reviewed-by: Mike McGowen Signed-off-by: Don Brace Link: https://lore.kernel.org/r/20230428153712.297638-9-don.brace@microchip.com Signed-off-by: Martin K. Petersen --- drivers/scsi/smartpqi/smartpqi_init.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 19a97bb..d3d4fc9 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, -- 2.7.4