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authorJia-Ju Bai <baijiaju1990@gmail.com>2018-04-09 23:04:12 +0800
committerBoris Ostrovsky <boris.ostrovsky@oracle.com>2018-04-16 10:20:21 -0400
commit9eb5f15b47b69847bfceb94350bd68fbdbf829e3 (patch)
tree041219820c19cb917a6e0fdc5aef4ecdd3001745 /drivers/xen
parentbb52e3169cb7dd5a9deea39b94342fce36235a5b (diff)
xen: xen-pciback: Replace GFP_ATOMIC with GFP_KERNEL in pcistub_device_alloc
pcistub_device_alloc() is never called in atomic context. The call chain ending up at pcistub_device_alloc() is: [1] pcistub_device_alloc() <- pcistub_seize() <- pcistub_probe() pcistub_probe() is only set as ".probe" in struct pci_driver. This function is not called in atomic context. Despite never getting called from atomic context, pcistub_device_alloc() calls kzalloc() with GFP_ATOMIC, which does not sleep for allocation. GFP_ATOMIC is not necessary and can be replaced with GFP_KERNEL, which can sleep and improve the possibility of sucessful allocation. Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/xen-pciback/pci_stub.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/xen/xen-pciback/pci_stub.c b/drivers/xen/xen-pciback/pci_stub.c
index b36fa76a69c7..210b93f41385 100644
--- a/drivers/xen/xen-pciback/pci_stub.c
+++ b/drivers/xen/xen-pciback/pci_stub.c
@@ -71,7 +71,7 @@ static struct pcistub_device *pcistub_device_alloc(struct pci_dev *dev)
dev_dbg(&dev->dev, "pcistub_device_alloc\n");
- psdev = kzalloc(sizeof(*psdev), GFP_ATOMIC);
+ psdev = kzalloc(sizeof(*psdev), GFP_KERNEL);
if (!psdev)
return NULL;