RE: [PATCH 04/10] megaraid_sas: add endianess conversions for all ones

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>-----Original Message-----
>From: Christoph Hellwig [mailto:hch@xxxxxx]
>Sent: Saturday, January 10, 2015 10:41 PM
>To: Sumit.Saxena@xxxxxxxxxxxxx; kashyap.desai@xxxxxxxxxxxxx
>Cc: martin.petersen@xxxxxxxxxx; linux-scsi@xxxxxxxxxxxxxxx
>Subject: [PATCH 04/10] megaraid_sas: add endianess conversions for all
ones
>
>Add noop conversions for all ones to make sparse happy.
>
>Signed-off-by: Christoph Hellwig <hch@xxxxxx>
>---
> drivers/scsi/megaraid/megaraid_sas_base.c   | 2 +-
> drivers/scsi/megaraid/megaraid_sas_fp.c     | 7 ++++---
> drivers/scsi/megaraid/megaraid_sas_fusion.c | 9 +++++----
> 3 files changed, 10 insertions(+), 8 deletions(-)
>
>diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c
>b/drivers/scsi/megaraid/megaraid_sas_base.c
>index cb7d0c4..a6556ea 100644
>--- a/drivers/scsi/megaraid/megaraid_sas_base.c
>+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
>@@ -1232,7 +1232,7 @@ megasas_build_dcdb(struct megasas_instance
>*instance, struct scsi_cmnd *scp,
> 	*/
> 	if (scp->device->type == TYPE_TAPE) {
> 		if ((scp->request->timeout / HZ) > 0xFFFF)
>-			pthru->timeout = 0xFFFF;
>+			pthru->timeout = cpu_to_le16(0xFFFF);
> 		else
> 			pthru->timeout = cpu_to_le16(scp->request-
>>timeout / HZ);
> 	}
>diff --git a/drivers/scsi/megaraid/megaraid_sas_fp.c
>b/drivers/scsi/megaraid/megaraid_sas_fp.c
>index e9138a2..2001ffb 100644
>--- a/drivers/scsi/megaraid/megaraid_sas_fp.c
>+++ b/drivers/scsi/megaraid/megaraid_sas_fp.c
>@@ -769,7 +769,7 @@ static u8 mr_spanset_get_phy_params(struct
>megasas_instance *instance, u32 ld,
> 	if (pd != MR_PD_INVALID)
> 		*pDevHandle = MR_PdDevHandleGet(pd, map);
> 	else {
>-		*pDevHandle = MR_PD_INVALID;
>+		*pDevHandle = cpu_to_le16(MR_PD_INVALID);
> 		if ((raid->level >= 5) &&
> 			(!do_invader  || (do_invader &&
> 			(raid->regTypeReqOnRead !=
>REGION_TYPE_UNUSED)))) @@ -864,7 +864,8 @@ u8
>MR_GetPhyParams(struct megasas_instance *instance, u32 ld, u64 stripRow,
> 		/* Get dev handle from Pd. */
> 		*pDevHandle = MR_PdDevHandleGet(pd, map);
> 	else {
>-		*pDevHandle = MR_PD_INVALID; /* set dev handle as invalid.
>*/
>+		/* set dev handle as invalid. */
>+		*pDevHandle = cpu_to_le16(MR_PD_INVALID);
> 		if ((raid->level >= 5) &&
> 			(!do_invader  || (do_invader &&
> 			(raid->regTypeReqOnRead !=
>REGION_TYPE_UNUSED)))) @@ -1109,7 +1110,7 @@
>MR_BuildRaidContext(struct megasas_instance *instance,
> 					ref_in_start_stripe, io_info,
> 					pRAID_Context, map);
> 		/* If IO on an invalid Pd, then FP is not possible.*/
>-		if (io_info->devHandle == MR_PD_INVALID)
>+		if (io_info->devHandle == cpu_to_le16(MR_PD_INVALID))
> 			io_info->fpOkForIo = FALSE;
> 		return retval;
> 	} else if (isRead) {
>diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c
>b/drivers/scsi/megaraid/megaraid_sas_fusion.c
>index 983635f..82439f9 100644
>--- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
>+++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
>@@ -464,7 +464,7 @@ megasas_alloc_cmds_fusion(struct megasas_instance
>*instance)
>
> 	reply_desc = fusion->reply_frames_desc;
> 	for (i = 0; i < fusion->reply_q_depth * count; i++, reply_desc++)
>-		reply_desc->Words = ULLONG_MAX;
>+		reply_desc->Words = cpu_to_le64(ULLONG_MAX);
>
> 	io_frames_sz = fusion->io_frames_alloc_sz;
>
>@@ -1995,7 +1995,8 @@ complete_cmd_fusion(struct megasas_instance
>*instance, u32 MSIxIndex)
>
> 	num_completed = 0;
>
>-	while ((d_val.u.low != UINT_MAX) && (d_val.u.high != UINT_MAX)) {
>+	while (d_val.u.low != cpu_to_le32(UINT_MAX) &&
>+	       d_val.u.high != cpu_to_le32(UINT_MAX)) {
> 		smid = le16_to_cpu(reply_desc->SMID);
>
> 		cmd_fusion = fusion->cmd_list[smid - 1]; @@ -2063,7
+2064,7
>@@ complete_cmd_fusion(struct megasas_instance *instance, u32
>MSIxIndex)
> 		    fusion->reply_q_depth)
> 			fusion->last_reply_idx[MSIxIndex] = 0;
>
>-		desc->Words = ULLONG_MAX;
>+		desc->Words = cpu_to_le64(ULLONG_MAX);
> 		num_completed++;
> 		threshold_reply_count++;
>
>@@ -2505,7 +2506,7 @@ void  megasas_reset_reply_desc(struct
>megasas_instance *instance)
> 		fusion->last_reply_idx[i] = 0;
> 	reply_desc = fusion->reply_frames_desc;
> 	for (i = 0 ; i < fusion->reply_q_depth * count; i++, reply_desc++)
>-		reply_desc->Words = ULLONG_MAX;
>+		reply_desc->Words = cpu_to_le64(ULLONG_MAX);
> }
>
> /* Check for a second path that is currently UP */
Acked-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx>

>--
>1.9.1
--
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