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authorTejun Heo <tj@kernel.org>2010-12-22 12:06:36 +0300
committerJesse Barnes <jbarnes@virtuousgeek.org>2010-12-23 23:53:52 +0300
commit99a0fadf561e1f553c08f0a29f8b2578f55dd5f0 (patch)
tree97bf80533001e4aedf6e6e96e21c3cac4bd37641 /drivers/pci/pci-stub.c
parent9b444b36fee16d2aaae9cc91ce594ecb15d922a9 (diff)
downloadlinux-99a0fadf561e1f553c08f0a29f8b2578f55dd5f0.tar.xz
PCI: pci-stub: ignore zero-length id parameters
pci-stub uses strsep() to separate list of ids and generates a warning message when it fails to parse an id. However, not specifying the parameter results in ids set to an empty string. strsep() happily returns the empty string as the first token and thus triggers the warning message spuriously. Make the tokner ignore zero length ids. Reported-by: Chris Wright <chrisw@sous-sol.org> Reported-by: Prasad Joshi <P.G.Joshi@student.reading.ac.uk> Cc: stable@kernel.org Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/pci-stub.c')
-rw-r--r--drivers/pci/pci-stub.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/pci/pci-stub.c b/drivers/pci/pci-stub.c
index 4c0336b31caf..775e933c2225 100644
--- a/drivers/pci/pci-stub.c
+++ b/drivers/pci/pci-stub.c
@@ -58,6 +58,9 @@ static int __init pci_stub_init(void)
subdevice = PCI_ANY_ID, class=0, class_mask=0;
int fields;
+ if (!strlen(id))
+ continue;
+
fields = sscanf(id, "%x:%x:%x:%x:%x:%x",
&vendor, &device, &subvendor, &subdevice,
&class, &class_mask);