diff options
| author | Apelete Seketeli <apelete@seketeli.net> | 2013-11-19 23:18:20 +0100 |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2013-11-25 10:25:58 -0600 |
| commit | fd3923a9904f34d5472134358d87f454a288fc45 (patch) | |
| tree | 161126dd6ad9c85c9f80a7c62405077f45f61bfe /drivers/usb/musb/musb_gadget.c | |
| parent | b144e4ab1ef130e8bf30bcd3e529b7f35112c503 (diff) | |
| download | linux-fd3923a9904f34d5472134358d87f454a288fc45.tar.gz | |
usb: fix musb gadget to enable OTG mode conditionally
The musb driver is usable in host, gadget or dual role mode depending on the kernel configuration. However, the musb gadget part of the driver is enabling OTG mode whether the driver is built for dual role or gadget only mode. This induces a bug for gadget only USB device controllers where the kernel tries to use Host Negotiation Protocol with such controllers, which causes a panic. This behaviour is now fixed by enabling OTG mode only when musb driver is built for dual role mode. Signed-off-by: Apelete Seketeli <apelete@seketeli.net> Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/musb/musb_gadget.c')
| -rw-r--r-- | drivers/usb/musb/musb_gadget.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c index d2d3a173b315..32fb057c03f5 100644 --- a/drivers/usb/musb/musb_gadget.c +++ b/drivers/usb/musb/musb_gadget.c @@ -1796,7 +1796,11 @@ int musb_gadget_setup(struct musb *musb) /* this "gadget" abstracts/virtualizes the controller */ musb->g.name = musb_driver_name; +#if IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE) musb->g.is_otg = 1; +#elif IS_ENABLED(CONFIG_USB_MUSB_GADGET) + musb->g.is_otg = 0; +#endif musb_g_init_endpoints(musb); |