The kernel oopses in phy_lookup() due to 'phy->init_data' being NULL if we
register PHYs from a device tree probing driver and then call phy_get() on a
device that has no representation in the device tree (e.g. a PCI device).
Checking the pointer before dereferening it and skipping an interation if
it's NULL prevents this kernel oops.
Signed-off-by: Sergei Shtylyov <sergei.shtyl...@cogentembedded.com>
---
The patch is against the 'fixes' branch of Kishon's 'linux-phy.git' repo.
drivers/phy/phy-core.c | 3 +++
1 file changed, 3 insertions(+)
Index: linux-phy/drivers/phy/phy-core.c
===================================================================
--- linux-phy.orig/drivers/phy/phy-core.c
+++ linux-phy/drivers/phy/phy-core.c
@@ -64,6 +64,9 @@ static struct phy *phy_lookup(struct dev
class_dev_iter_init(&iter, phy_class, NULL, NULL);
while ((dev = class_dev_iter_next(&iter))) {
phy = to_phy(dev);
+
+ if (!phy->init_data)
+ continue;
count = phy->init_data->num_consumers;
consumers = phy->init_data->consumers;
while (count--) {
--
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