[PATCH 01/19] aacraid: Remove GFP_DMA for raw srb memory

Raghava Aditya Renukunta
2017-05-07T21:45:38Z

The raw srb commands do not requires memory that in the ZONE_DMA
memory space. For 32bit srb commands use __GFP_DMA32 to limit the memory
to 32bit memory range (4GB).

Signed-off-by: Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com>
---
drivers/scsi/aacraid/commctrl.c | 13 ++++++-------
1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index d2f8d59..da01f9c 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -668,7 +668,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
goto cleanup;
}

- p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+ p = kmalloc(sg_count[i], GFP_KERNEL);
if (!p) {
rcode = -ENOMEM;
goto cleanup;
@@ -733,7 +733,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
goto cleanup;
}
/* Does this really need to be GFP_DMA? */
- p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+ p = kmalloc(sg_count[i], GFP_KERNEL);
if(!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, upsg->count));
@@ -788,8 +788,8 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
rcode = -EINVAL;
goto cleanup;
}
- /* Does this really need to be GFP_DMA? */
- p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+
+ p = kmalloc(sg_count[i], GFP_KERNEL);
if(!p) {
dprintk((KERN_DEBUG "aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, usg->count));
@@ -845,8 +845,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
rcode = -EINVAL;
goto cleanup;
}
- /* Does this really need to be GFP_DMA? */
- p = kmalloc(sg_count[i], GFP_KERNEL|__GFP_DMA);
+ p = kmalloc(sg_count[i], GFP_KERNEL|GFP_DMA32);
if (!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, usg->count));
@@ -887,7 +886,7 @@ static int aac_send_raw_srb(struct aac_dev* dev, void __user * arg)
rcode = -EINVAL;
goto cleanup;
}
- p = kmalloc(sg_count[i], GFP_KERNEL);
+ p = kmalloc(sg_count[i], GFP_KERNEL|GFP_DMA32);
if (!p) {
dprintk((KERN_DEBUG"aacraid: Could not allocate SG buffer - size = %d buffer number %d of %d\n",
sg_count[i], i, upsg->count));
--
2.7.4