From: Praveena Nadahally Date: Fri, 10 Sep 2010 17:35:03 +0000 (+0530) Subject: USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT_V25TER X-Git-Tag: firefly_0821_release~9833^2~79^2^2~312 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=18409d93a4548b6bd00384df6e853c803c370b3a;p=firefly-linux-kernel-4.4.55.git USB: Change acm_iad_descriptor bFunctionProtocol to USB_CDC_ACM_PROTO_AT_V25TER commit 5c8db070b4480c43394680d9dfd2ddb06b97d2ae upstream. The protocol code is set 00 in IAD and it's set to 01 in ACM control interface descriptor in f_acm.c file. Due to this, windows is unable to install the modem(ACM) driver based on class-subclass-protocol matching. This patch corrects the protocol code in ACM IAD to the same as in acm_control_interface_desc protocol code. Acked-by: Linus Walleij Signed-off-by: Praveena Nadahally Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/gadget/f_acm.c b/drivers/usb/gadget/f_acm.c index d47a123f15ab..bd6226cbae86 100644 --- a/drivers/usb/gadget/f_acm.c +++ b/drivers/usb/gadget/f_acm.c @@ -111,7 +111,7 @@ acm_iad_descriptor = { .bInterfaceCount = 2, // control + data .bFunctionClass = USB_CLASS_COMM, .bFunctionSubClass = USB_CDC_SUBCLASS_ACM, - .bFunctionProtocol = USB_CDC_PROTO_NONE, + .bFunctionProtocol = USB_CDC_ACM_PROTO_AT_V25TER, /* .iFunction = DYNAMIC */ };