[PATCH] PCI: fix a scheduling in atomic bug

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

This function is often called with a spinlock held so the allocation has
to be atomic.  The call tree is:

pci_specified_resource_alignment() <-- takes spin_lock();
 -> pci_dev_str_match()
    -> pci_dev_str_match_path()

Fixes: 07d8d7e57c28 ("PCI: Make specifying PCI devices in kernel parameters reusable")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/pci/pci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 6714c58ce321..71baf5ff48fc 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -269,7 +269,7 @@ static int pci_dev_str_match_path(struct pci_dev *dev, const char *path,
 
 	*endptr = strchrnul(path, ';');
 
-	wpath = kmemdup_nul(path, *endptr - path, GFP_KERNEL);
+	wpath = kmemdup_nul(path, *endptr - path, GFP_ATOMIC);
 	if (!wpath)
 		return -ENOMEM;
 
-- 
2.20.1