[9/12] scsi: arcmsr: Add an option of set dma_mask_64 for ACB_ADAPTER_TYPE_A

Commit Message

ching Huang Dec. 19, 2018, 8:53 a.m. UTC

From Ching Huang <[e-mail]>

Add an option of set dma_mask_64 for ACB_ADAPTER_TYPE_A

Signed-off-by: Ching Huang <[e-mail]>
---

Patch

diff --git a/drivers/scsi/arcmsr/arcmsr_hba.c b/drivers/scsi/arcmsr/arcmsr_hba.c
index 8cc2134..45f1374 100755
--- a/drivers/scsi/arcmsr/arcmsr_hba.c
+++ b/drivers/scsi/arcmsr/arcmsr_hba.c
@@ -91,6 +91,10 @@  static int cmd_per_lun = ARCMSR_DEFAULT_CMD_PERLUN;
 module_param(cmd_per_lun, int, S_IRUGO);
 MODULE_PARM_DESC(cmd_per_lun, " device queue depth(1 ~ 128), default is 32");
 
+static int dma_mask_64 = 0;
+module_param(dma_mask_64, int, S_IRUGO);
+MODULE_PARM_DESC(dma_mask_64, " set DMA mask to 64 bits(0 ~ 1), dma_mask_64=1(64 bits), =0(32 bits)");
+
 static int set_date_time = 0;
 module_param(set_date_time, int, S_IRUGO);
 MODULE_PARM_DESC(set_date_time, " send date, time to iop(0 ~ 1), set_date_time=1(enable), default(=0) is disable");