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usb: phy: am335x-control: check return value of bus_find_device

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This fixes a potential null pointer dereference.

Cc: <[email protected]> # v3.16+
Fixes: d433201391 ("driver core: dev_get_drvdata: Don't check for NULL dev")
Acked-by: Sebastian Andrzej Siewior <[email protected]>
Signed-off-by: David Dueck <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
This commit is contained in:
David Dueck 2015-02-08 16:29:30 +01:00 • committed by Felipe Balbi
commit d0f347d628
1 changed files with 3 additions and 0 deletions
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drivers/usb/phy/phy-am335x-control.c
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@ -126,6 +126,9 @@ struct phy_control *am335x_get_phy_control(struct device *dev)
return NULL;
dev = bus_find_device(&platform_bus_type, NULL, node, match);
if (!dev)
return NULL;
ctrl_usb = dev_get_drvdata(dev);
if (!ctrl_usb)
return NULL;