usb: dwc2/gadget: fix phy disable sequence
authorKamil Debski <k.debski@samsung.com>
Tue, 9 Sep 2014 08:44:08 +0000 (10:44 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 9 Sep 2014 17:17:38 +0000 (10:17 -0700)
commit0655314be0d9c54ad5f63500219485c6a9d9e5e2
treea9e9fd072f63156234340c458255f4f0d0f8a08f
parent675f0ab2fe5a0f7325208e60b617a5f32b86d72c
usb: dwc2/gadget: fix phy disable sequence

When the driver is removed s3c_hsotg_phy_disable is called three times
instead of once. This results in decreasing of the phy reference counter
below zero and thus consecutive inserts of the module fails.

This patch removes calls to s3c_hsotg_phy_disable from s3c_hsotg_remove
and s3c_hsotg_udc_stop.

s3c_hsotg_udc_stop is called from udc-core.c only after
usb_gadget_disconnect, which in turn calls s3c_hsotg_pullup, which
already calls s3c_hsotg_phy_disable.

s3c_hsotg_remove must be called only after udc_stop, so there is no
point in disabling phy once again there.

Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Cc: stable <stable@vger.kernel.org> # 3.16
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/usb/dwc2/gadget.c