diff options
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas.c')
| -rw-r--r-- | drivers/scsi/megaraid/megaraid_sas.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c index 9aee2544798..7eefbe0681d 100644 --- a/drivers/scsi/megaraid/megaraid_sas.c +++ b/drivers/scsi/megaraid/megaraid_sas.c @@ -1890,6 +1890,7 @@ static int megasas_init_mfi(struct megasas_instance *instance) u32 reply_q_sz; u32 max_sectors_1; u32 max_sectors_2; + u32 tmp_sectors; struct megasas_register_set __iomem *reg_set; struct megasas_ctrl_info *ctrl_info; /* @@ -1982,17 +1983,20 @@ static int megasas_init_mfi(struct megasas_instance *instance) * Note that older firmwares ( < FW ver 30) didn't report information * to calculate max_sectors_1. So the number ended up as zero always. */ + tmp_sectors = 0; if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) { max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) * ctrl_info->max_strips_per_io; max_sectors_2 = ctrl_info->max_request_size; - instance->max_sectors_per_req = (max_sectors_1 < max_sectors_2) - ? max_sectors_1 : max_sectors_2; - } else - instance->max_sectors_per_req = instance->max_num_sge * - PAGE_SIZE / 512; + tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2); + } + + instance->max_sectors_per_req = instance->max_num_sge * + PAGE_SIZE / 512; + if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors)) + instance->max_sectors_per_req = tmp_sectors; kfree(ctrl_info); |