This is a note to let you know that I've just added the patch titled
scsi: ufs: cleanup struct utp_task_req_desc
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
scsi-ufs-cleanup-struct-utp_task_req_desc.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 6e1889000d72e87995f06eb6bfadf63311484b5d
Author: Christoph Hellwig <hch@xxxxxx>
Date: Sun Oct 7 17:30:32 2018 +0300
scsi: ufs: cleanup struct utp_task_req_desc
[ Upstream commit 391e388f853dad5d1d7462a31bb50ff2446e37f0 ]
Remove the pointless task_req_upiu and task_rsp_upiu indirections,
which are __le32 arrays always cast to given structures and just add
the members directly. Also clean up variables names in use in the
callers a bit to make the code more readable.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Avri Altman <avri.altman@xxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Stable-dep-of: e4a628877119 ("scsi: ufs: core: Perform read back after disabling interrupts")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/scsi/ufs/ufs.h b/drivers/scsi/ufs/ufs.h
index c3bcaaec0fc5c..58f8d6002d5a1 100644
--- a/drivers/scsi/ufs/ufs.h
+++ b/drivers/scsi/ufs/ufs.h
@@ -519,36 +519,6 @@ struct utp_upiu_rsp {
};
};
-/**
- * struct utp_upiu_task_req - Task request UPIU structure
- * @header - UPIU header structure DW0 to DW-2
- * @input_param1: Input parameter 1 DW-3
- * @input_param2: Input parameter 2 DW-4
- * @input_param3: Input parameter 3 DW-5
- * @reserved: Reserved double words DW-6 to DW-7
- */
-struct utp_upiu_task_req {
- struct utp_upiu_header header;
- __be32 input_param1;
- __be32 input_param2;
- __be32 input_param3;
- __be32 reserved[2];
-};
-
-/**
- * struct utp_upiu_task_rsp - Task Management Response UPIU structure
- * @header: UPIU header structure DW0-DW-2
- * @output_param1: Ouput parameter 1 DW3
- * @output_param2: Output parameter 2 DW4
- * @reserved: Reserved double words DW-5 to DW-7
- */
-struct utp_upiu_task_rsp {
- struct utp_upiu_header header;
- __be32 output_param1;
- __be32 output_param2;
- __be32 reserved[3];
-};
-
/**
* struct ufs_query_req - parameters for building a query request
* @query_func: UPIU header query function
diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
index b45cd6c98bad7..2239dda35fd70 100644
--- a/drivers/scsi/ufs/ufshcd.c
+++ b/drivers/scsi/ufs/ufshcd.c
@@ -341,14 +341,11 @@ static void ufshcd_add_query_upiu_trace(struct ufs_hba *hba, unsigned int tag,
static void ufshcd_add_tm_upiu_trace(struct ufs_hba *hba, unsigned int tag,
const char *str)
{
- struct utp_task_req_desc *descp;
- struct utp_upiu_task_req *task_req;
int off = (int)tag - hba->nutrs;
+ struct utp_task_req_desc *descp = &hba->utmrdl_base_addr[off];
- descp = &hba->utmrdl_base_addr[off];
- task_req = (struct utp_upiu_task_req *)descp->task_req_upiu;
- trace_ufshcd_upiu(dev_name(hba->dev), str, &task_req->header,
- &task_req->input_param1);
+ trace_ufshcd_upiu(dev_name(hba->dev), str, &descp->req_header,
+ &descp->input_param1);
}
static void ufshcd_add_command_trace(struct ufs_hba *hba,
@@ -490,22 +487,13 @@ void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
{
- struct utp_task_req_desc *tmrdp;
int tag;
for_each_set_bit(tag, &bitmap, hba->nutmrs) {
- tmrdp = &hba->utmrdl_base_addr[tag];
+ struct utp_task_req_desc *tmrdp = &hba->utmrdl_base_addr[tag];
+
dev_err(hba->dev, "TM[%d] - Task Management Header\n", tag);
- ufshcd_hex_dump("TM TRD: ", &tmrdp->header,
- sizeof(struct request_desc_header));
- dev_err(hba->dev, "TM[%d] - Task Management Request UPIU\n",
- tag);
- ufshcd_hex_dump("TM REQ: ", tmrdp->task_req_upiu,
- sizeof(struct utp_upiu_req));
- dev_err(hba->dev, "TM[%d] - Task Management Response UPIU\n",
- tag);
- ufshcd_hex_dump("TM RSP: ", tmrdp->task_rsp_upiu,
- sizeof(struct utp_task_req_desc));
+ ufshcd_hex_dump("", tmrdp, sizeof(*tmrdp));
}
}
@@ -4680,31 +4668,22 @@ static void ufshcd_slave_destroy(struct scsi_device *sdev)
*/
static int ufshcd_task_req_compl(struct ufs_hba *hba, u32 index, u8 *resp)
{
- struct utp_task_req_desc *task_req_descp;
- struct utp_upiu_task_rsp *task_rsp_upiup;
+ struct utp_task_req_desc *treq = hba->utmrdl_base_addr + index;
unsigned long flags;
int ocs_value;
- int task_result;
spin_lock_irqsave(hba->host->host_lock, flags);
/* Clear completed tasks from outstanding_tasks */
__clear_bit(index, &hba->outstanding_tasks);
- task_req_descp = hba->utmrdl_base_addr;
- ocs_value = ufshcd_get_tmr_ocs(&task_req_descp[index]);
+ ocs_value = ufshcd_get_tmr_ocs(treq);
- if (ocs_value == OCS_SUCCESS) {
- task_rsp_upiup = (struct utp_upiu_task_rsp *)
- task_req_descp[index].task_rsp_upiu;
- task_result = be32_to_cpu(task_rsp_upiup->output_param1);
- task_result = task_result & MASK_TM_SERVICE_RESP;
- if (resp)
- *resp = (u8)task_result;
- } else {
+ if (ocs_value != OCS_SUCCESS)
dev_err(hba->dev, "%s: failed, ocs = 0x%x\n",
__func__, ocs_value);
- }
+ else if (resp)
+ *resp = be32_to_cpu(treq->output_param1) & MASK_TM_SERVICE_RESP;
spin_unlock_irqrestore(hba->host->host_lock, flags);
return ocs_value;
@@ -5682,8 +5661,7 @@ static int ufshcd_clear_tm_cmd(struct ufs_hba *hba, int tag)
static int ufshcd_issue_tm_cmd(struct ufs_hba *hba, int lun_id, int task_id,
u8 tm_function, u8 *tm_response)
{
- struct utp_task_req_desc *task_req_descp;
- struct utp_upiu_task_req *task_req_upiup;
+ struct utp_task_req_desc *treq;
struct Scsi_Host *host;
unsigned long flags;
int free_slot;
@@ -5701,29 +5679,23 @@ static int ufshcd_issue_tm_cmd(struct ufs_hba *hba, int lun_id, int task_id,
ufshcd_hold(hba, false);
spin_lock_irqsave(host->host_lock, flags);
- task_req_descp = hba->utmrdl_base_addr;
- task_req_descp += free_slot;
+ treq = hba->utmrdl_base_addr + free_slot;
/* Configure task request descriptor */
- task_req_descp->header.dword_0 = cpu_to_le32(UTP_REQ_DESC_INT_CMD);
- task_req_descp->header.dword_2 =
- cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
+ treq->header.dword_0 = cpu_to_le32(UTP_REQ_DESC_INT_CMD);
+ treq->header.dword_2 = cpu_to_le32(OCS_INVALID_COMMAND_STATUS);
/* Configure task request UPIU */
- task_req_upiup =
- (struct utp_upiu_task_req *) task_req_descp->task_req_upiu;
task_tag = hba->nutrs + free_slot;
- task_req_upiup->header.dword_0 =
- UPIU_HEADER_DWORD(UPIU_TRANSACTION_TASK_REQ, 0,
- lun_id, task_tag);
- task_req_upiup->header.dword_1 =
- UPIU_HEADER_DWORD(0, tm_function, 0, 0);
+ treq->req_header.dword_0 = UPIU_HEADER_DWORD(UPIU_TRANSACTION_TASK_REQ,
+ 0, lun_id, task_tag);
+ treq->req_header.dword_1 = UPIU_HEADER_DWORD(0, tm_function, 0, 0);
/*
* The host shall provide the same value for LUN field in the basic
* header and for Input Parameter.
*/
- task_req_upiup->input_param1 = cpu_to_be32(lun_id);
- task_req_upiup->input_param2 = cpu_to_be32(task_id);
+ treq->input_param1 = cpu_to_be32(lun_id);
+ treq->input_param2 = cpu_to_be32(task_id);
ufshcd_vops_setup_task_mgmt(hba, free_slot, tm_function);
diff --git a/drivers/scsi/ufs/ufshci.h b/drivers/scsi/ufs/ufshci.h
index bb5d9c7f3353a..6fa889de5ee5e 100644
--- a/drivers/scsi/ufs/ufshci.h
+++ b/drivers/scsi/ufs/ufshci.h
@@ -433,22 +433,25 @@ struct utp_transfer_req_desc {
__le16 prd_table_offset;
};
-/**
- * struct utp_task_req_desc - UTMRD structure
- * @header: UTMRD header DW-0 to DW-3
- * @task_req_upiu: Pointer to task request UPIU DW-4 to DW-11
- * @task_rsp_upiu: Pointer to task response UPIU DW12 to DW-19
+/*
+ * UTMRD structure.
*/
struct utp_task_req_desc {
-
/* DW 0-3 */
struct request_desc_header header;
- /* DW 4-11 */
- __le32 task_req_upiu[TASK_REQ_UPIU_SIZE_DWORDS];
-
- /* DW 12-19 */
- __le32 task_rsp_upiu[TASK_RSP_UPIU_SIZE_DWORDS];
+ /* DW 4-11 - Task request UPIU structure */
+ struct utp_upiu_header req_header;
+ __be32 input_param1;
+ __be32 input_param2;
+ __be32 input_param3;
+ __be32 __reserved1[2];
+
+ /* DW 12-19 - Task Management Response UPIU structure */
+ struct utp_upiu_header rsp_header;
+ __be32 output_param1;
+ __be32 output_param2;
+ __be32 __reserved2[3];
};
#endif /* End of Header */
