RE: [PATCH 05/10] megaraid_sas: move endianess conversion into caller of megasas_get_seq_num

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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 05/10] megaraid_sas: move endianess conversion into
caller
>of megasas_get_seq_num
>
>Converting structure fields in place is always a bad idea, and in this
case by
>moving it into the only caller we also only have to do a single byte swap
as
>most fields of this structure are never used.
>
>Signed-off-by: Christoph Hellwig <hch@xxxxxx>
>---
> drivers/scsi/megaraid/megaraid_sas_base.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
>diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c
>b/drivers/scsi/megaraid/megaraid_sas_base.c
>index a6556ea..548d033 100644
>--- a/drivers/scsi/megaraid/megaraid_sas_base.c
>+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
>@@ -4823,11 +4823,11 @@ megasas_get_seq_num(struct megasas_instance
>*instance,
> 		/*
> 		 * Copy the data back into callers buffer
> 		 */
>-		eli->newest_seq_num = le32_to_cpu(el_info-
>>newest_seq_num);
>-		eli->oldest_seq_num = le32_to_cpu(el_info-
>>oldest_seq_num);
>-		eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
>-		eli->shutdown_seq_num = le32_to_cpu(el_info-
>>shutdown_seq_num);
>-		eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
>+		eli->newest_seq_num = el_info->newest_seq_num;
>+		eli->oldest_seq_num = el_info->oldest_seq_num;
>+		eli->clear_seq_num = el_info->clear_seq_num;
>+		eli->shutdown_seq_num = el_info->shutdown_seq_num;
>+		eli->boot_seq_num = el_info->boot_seq_num;
> 	}
>
> 	pci_free_consistent(instance->pdev, sizeof(struct
>megasas_evt_log_info), @@ -4991,7 +4991,7 @@ static int
>megasas_start_aen(struct megasas_instance *instance)
> 	class_locale.members.class = MR_EVT_CLASS_DEBUG;
>
> 	return megasas_register_aen(instance,
>-			eli.newest_seq_num + 1,
>+			le32_to_cpu(eli.newest_seq_num) + 1,
> 			class_locale.word);
> }
>
Acked-by: Sumit Saxena <sumit.saxena@xxxxxxxxxxxxx>

>--
>1.9.1
--
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