Merge "USB: f_diag: Report max request size handled by controller" (7cf69aa8) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/usb/gadget/function/f_diag.c

+21 −0

Original line number	Diff line number	Diff line
		@@ -424,6 +424,27 @@ fail:
		}
		EXPORT_SYMBOL(usb_diag_alloc_req);

		#define DWC3_MAX_REQUEST_SIZE (1024 * 1024)
		#define CI_MAX_REQUEST_SIZE (16 * 1024)
		/**
		* usb_diag_request_size - Max request size for controller
		* @ch: Channel handler
		*
		* Infom max request size so that diag driver can split packets
		* in chunks of max size which controller can handle.
		*/
		int usb_diag_request_size(struct usb_diag_ch *ch)
		{
		struct diag_context *ctxt = ch->priv_usb;
		struct usb_composite_dev *cdev = ctxt->cdev;

		if (gadget_is_dwc3(cdev->gadget))
		return DWC3_MAX_REQUEST_SIZE;
		else
		return CI_MAX_REQUEST_SIZE;
		}
		EXPORT_SYMBOL(usb_diag_request_size);

		/**
		* usb_diag_read() - Read data from USB diag channel
		* @ch: Channel handler

+1 −0

Original line number	Diff line number	Diff line
		@@ -50,6 +50,7 @@ struct usb_diag_ch {
		};

		#ifdef CONFIG_USB_G_ANDROID
		int usb_diag_request_size(struct usb_diag_ch *ch);
		struct usb_diag_ch usb_diag_open(const char name, void *priv,
		void (notify)(void , unsigned, struct diag_request *));
		void usb_diag_close(struct usb_diag_ch *ch);