[PATCH 3.13.y-ckt 074/138] phy: twl4030-usb: Relase usb phy on unload

From: Kamal Mostafa
Date: Wed Mar 09 2016 - 18:37:25 EST

3.13.11-ckt36 -stable review patch. If anyone has any objections, please let me know.


From: Tony Lindgren <tony@xxxxxxxxxxx>

commit b241d31ef2f6a289d33dcaa004714b26e06f476f upstream.

Otherwise rmmod omap2430; rmmod phy-twl4030-usb; modprobe omap2430
will try to use a non-existing phy and oops:

Unable to handle kernel paging request at virtual address b6f7c1f0
[<c048a284>] (devm_usb_get_phy_by_node) from [<bf0758ac>]
(omap2430_musb_init+0x44/0x2b4 [omap2430])
[<bf0758ac>] (omap2430_musb_init [omap2430]) from [<bf055ec0>]
(musb_init_controller+0x194/0x878 [musb_hdrc])

Cc: Bin Liu <b-liu@xxxxxx>
Cc: Felipe Balbi <balbi@xxxxxx>
Cc: Kishon Vijay Abraham I <kishon@xxxxxx>
Cc: NeilBrown <neil@xxxxxxxxxx>
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Kishon Vijay Abraham I <kishon@xxxxxx>
Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx>
drivers/phy/phy-twl4030-usb.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/phy/phy-twl4030-usb.c b/drivers/phy/phy-twl4030-usb.c
index 70b513a..5f429d5 100644
--- a/drivers/phy/phy-twl4030-usb.c
+++ b/drivers/phy/phy-twl4030-usb.c
@@ -740,6 +740,7 @@ static int twl4030_usb_remove(struct platform_device *pdev)
struct twl4030_usb *twl = platform_get_drvdata(pdev);
int val;

+ usb_remove_phy(&twl->phy);
device_remove_file(twl->dev, &dev_attr_vbus);