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authorsumit.saxena@avagotech.com <sumit.saxena@avagotech.com>2015-10-15 13:40:04 +0530
committerMartin K. Petersen <martin.petersen@oracle.com>2015-10-29 03:20:23 -0400
commit357ae967ad66e357f78b5cfb5ab6ca07fb4a7758 (patch)
tree37ea2d7b445bb83e764d9cd4044663f3a078b6f3 /drivers/scsi/megaraid/megaraid_sas_base.c
parent7364d34b878d78c4df90d0e6a5e06f8ad0c283e4 (diff)
downloadlinux-stericsson-357ae967ad66e357f78b5cfb5ab6ca07fb4a7758.tar.gz
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>
Diffstat (limited to 'drivers/scsi/megaraid/megaraid_sas_base.c')
-rw-r--r--drivers/scsi/megaraid/megaraid_sas_base.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
index b9a0da7c61ba..d452b1951cf1 100644
--- a/drivers/scsi/megaraid/megaraid_sas_base.c
+++ b/drivers/scsi/megaraid/megaraid_sas_base.c
@@ -4871,7 +4871,7 @@ static int megasas_init_fw(struct megasas_instance *instance)
instance->max_sectors_per_req = instance->max_num_sge *
- PAGE_SIZE / 512;
+ SGE_BUFFER_SIZE / 512;
if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
instance->max_sectors_per_req = tmp_sectors;