commit 357ae967ad66e357f78b5cfb5ab6ca07fb4a7758
author sumit.saxena@avagotech.com <sumit.saxena@avagotech.com> Thu Oct 15 13:40:04 2015 +0530
committer Martin K. Petersen <martin.petersen@oracle.com> Thu Oct 29 03:20:23 2015 -0400
tree 37ea2d7b445bb83e764d9cd4044663f3a078b6f3
parent 7364d34b878d78c4df90d0e6a5e06f8ad0c283e4

megaraid_sas: Do not use PAGE_SIZE for max_sectors

Do not use PAGE_SIZE marco to calculate max_sectors per I/O
request. Driver code assumes PAGE_SIZE will be always 4096 which can
lead to wrongly calculated value if PAGE_SIZE is not 4096. This issue
was reported in Ubuntu Bugzilla Bug #1475166.

Cc: <stable@vger.kernel.org>
Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/megaraid/megaraid_sas.h

diff --git a/drivers/scsi/megaraid/megaraid_sas.h b/drivers/scsi/megaraid/megaraid_sas.h
index 6985e81..0413679 100644
--- a/drivers/scsi/megaraid/megaraid_sas.h
+++ b/drivers/scsi/megaraid/megaraid_sas.h
@@ -388,6 +388,8 @@
 	MR_EVT_ARGS_GENERIC,
 };
 
+
+#define SGE_BUFFER_SIZE	4096
 /*
  * define constants for device list query options
  */