[SCSI] mpt2sas: mpt2sas_base_get_sense_buffer_dma should be returning little endian

cpu_to_le64 when calculating the physical dma address. This will properly
handle endianess on big endian systems.  The return value of this function
was changed from dma_addr_t to __le64. Remove the typecasting of u32 when
setting the SenseBufferLowAddress, since its already in __le32 format.

Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Eric Moore <Eric.moore@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/scsi/mpt2sas/mpt2sas_base.c b/drivers/scsi/mpt2sas/mpt2sas_base.c
index 84087cc2d77..db5e36735e7 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_base.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_base.c
@@ -1328,12 +1328,13 @@ mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
  * @ioc: per adapter object
  * @smid: system request message index
  *
- * Returns phys pointer to sense buffer.
+ * Returns phys pointer to the low 32bit address of the sense buffer.
  */
-dma_addr_t
+__le32
 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 {
-        return ioc->sense_dma + ((smid - 1) * SCSI_SENSE_BUFFERSIZE);
+        return cpu_to_le32(ioc->sense_dma +
+                        ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
 }
 
 /**