4.4-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jonathan Liu <net...@gmail.com>
commit 6ed05c68cbcae42cd52b8e53b66952bfa9c002ce upstream.
This fixes a kernel oops when unloading the driver due to usb_put_phy
being called after usb_phy_generic_unregister when the device is
detached. Calling usb_phy_generic_unregister causes x->dev->driver to
be NULL in usb_put_phy and results in a NULL pointer dereference.
Signed-off-by: Jonathan Liu <net...@gmail.com>
Signed-off-by: Bin Liu <b-...@ti.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
drivers/usb/musb/sunxi.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/usb/musb/sunxi.c
+++ b/drivers/usb/musb/sunxi.c
@@ -320,6 +320,8 @@ static int sunxi_musb_exit(struct musb *
if (test_bit(SUNXI_MUSB_FL_HAS_SRAM, &glue->flags))
sunxi_sram_release(musb->controller->parent);
+ devm_usb_put_phy(glue->dev, glue->xceiv);
+
return 0;
}
