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authorPali Rohár <pali@kernel.org>2020-04-30 11:06:16 +0300
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>2020-05-18 16:40:38 +0300
commit2dd9072e8fb0af4af47c912244f6c16fc57d4fbc (patch)
tree790dbd9ea93c7598d233101c4fb3a9c315d6cea4 /drivers/pci/of.c
parent90c6cb4a355e7befcb557d217d1d8b8bd5875a05 (diff)
downloadlinux-2dd9072e8fb0af4af47c912244f6c16fc57d4fbc.tar.xz
PCI: of: Zero max-link-speed value is invalid
Interpret zero value of max-link-speed property as invalid, as the device tree bindings documentation specifies. Link: https://lore.kernel.org/r/20200430080625.26070-4-pali@kernel.org Tested-by: Tomasz Maciej Nowak <tmn505@gmail.com> Signed-off-by: Pali Rohár <pali@kernel.org> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Diffstat (limited to 'drivers/pci/of.c')
-rw-r--r--drivers/pci/of.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pci/of.c b/drivers/pci/of.c
index 81ceeaa6f1d5..27839cd2459f 100644
--- a/drivers/pci/of.c
+++ b/drivers/pci/of.c
@@ -592,7 +592,7 @@ int of_pci_get_max_link_speed(struct device_node *node)
u32 max_link_speed;
if (of_property_read_u32(node, "max-link-speed", &max_link_speed) ||
- max_link_speed > 4)
+ max_link_speed == 0 || max_link_speed > 4)
return -EINVAL;
return max_link_speed;