[patch] [SCSI] mvumi: use GFP_ATOMIC under spin lock

From: Dan Carpenter
Date: Sat Sep 29 2012 - 03:14:28 EST


This is called from the interrupt handler and with spin_locks held. Use
GFP_ATOMIC. The call tree looks like:
mvumi_isr_handler() <- takes a spin lock
-> mvumi_handshake()
-> mvumi_init_data()
-> mvumi_alloc_mem_resource() <- GFP_KERNEL

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/scsi/mvumi.c b/drivers/scsi/mvumi.c
index 783edc7..5ad8da4 100644
--- a/drivers/scsi/mvumi.c
+++ b/drivers/scsi/mvumi.c
@@ -118,7 +118,7 @@ static int mvumi_map_pci_addr(struct pci_dev *dev, void **addr_array)
static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,
enum resource_type type, unsigned int size)
{
- struct mvumi_res *res = kzalloc(sizeof(*res), GFP_KERNEL);
+ struct mvumi_res *res = kzalloc(sizeof(*res), GFP_ATOMIC);

if (!res) {
dev_err(&mhba->pdev->dev,
@@ -128,7 +128,7 @@ static struct mvumi_res *mvumi_alloc_mem_resource(struct mvumi_hba *mhba,

switch (type) {
case RESOURCE_CACHED_MEMORY:
- res->virt_addr = kzalloc(size, GFP_KERNEL);
+ res->virt_addr = kzalloc(size, GFP_ATOMIC);
if (!res->virt_addr) {
dev_err(&mhba->pdev->dev,
"unable to allocate memory,size = %d.\n", size);
--
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