Messages in this thread Patch in this message | | | From | Julian Scheel <> | Subject | [PATCH 1/3] usb: gadget: f_uac1: Fix endpoint reading | Date | Mon, 26 Jun 2017 09:35:03 +0200 |
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The endpoint is stored in the lower byte of wIndex, according to USB Audio 1.0 specification, section 5.2.1.1.
Signed-off-by: Julian Scheel <julian@jusst.de> --- drivers/usb/gadget/function/f_uac1.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/function/f_uac1.c b/drivers/usb/gadget/function/f_uac1.c index 8656f84e17d9..b955913bd7ea 100644 --- a/drivers/usb/gadget/function/f_uac1.c +++ b/drivers/usb/gadget/function/f_uac1.c @@ -327,7 +327,7 @@ static int audio_set_endpoint_req(struct usb_function *f, { struct usb_composite_dev *cdev = f->config->cdev; int value = -EOPNOTSUPP; - u16 ep = le16_to_cpu(ctrl->wIndex); + u8 ep = le16_to_cpu(ctrl->wIndex) & 0xff; u16 len = le16_to_cpu(ctrl->wLength); u16 w_value = le16_to_cpu(ctrl->wValue); @@ -363,7 +363,7 @@ static int audio_get_endpoint_req(struct usb_function *f, { struct usb_composite_dev *cdev = f->config->cdev; int value = -EOPNOTSUPP; - u8 ep = ((le16_to_cpu(ctrl->wIndex) >> 8) & 0xFF); + u8 ep = le16_to_cpu(ctrl->wIndex) & 0xff; u16 len = le16_to_cpu(ctrl->wLength); u16 w_value = le16_to_cpu(ctrl->wValue); -- 2.13.1
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