From 4ce86bfaa62f7f044701b796f1ee84e80308457f Mon Sep 17 00:00:00 2001 From: Robert Baldyga Date: Wed, 16 Sep 2015 12:11:03 +0200 Subject: [PATCH] usb: gadget: legacy: dbgp: eliminate abuse of ep->driver data Since ep->driver_data is not used for endpoint claiming, neither for enabled/disabled state storing, we can reduce number of places where we read or modify it's value, as now it has no particular meaning for function or framework logic. In case of dbgp, ep->driver_data was used only for endpoint claiming and marking endpoints as enabled, so we can simplify code by reducing it. Signed-off-by: Robert Baldyga Signed-off-by: Felipe Balbi --- drivers/usb/gadget/legacy/dbgp.c | 18 ++---------------- 1 file changed, 2 insertions(+), 16 deletions(-) diff --git a/drivers/usb/gadget/legacy/dbgp.c b/drivers/usb/gadget/legacy/dbgp.c index 5231a32aef55..99ca3dabc4f3 100644 --- a/drivers/usb/gadget/legacy/dbgp.c +++ b/drivers/usb/gadget/legacy/dbgp.c @@ -79,10 +79,7 @@ static int dbgp_consume(char *buf, unsigned len) static void __disable_ep(struct usb_ep *ep) { - if (ep && ep->driver_data == dbgp.gadget) { - usb_ep_disable(ep); - ep->driver_data = NULL; - } + usb_ep_disable(ep); } static void dbgp_disable_ep(void) @@ -171,7 +168,6 @@ static int __enable_ep(struct usb_ep *ep, struct usb_endpoint_descriptor *desc) int err; ep->desc = desc; err = usb_ep_enable(ep); - ep->driver_data = dbgp.gadget; return err; } @@ -229,8 +225,6 @@ static void dbgp_unbind(struct usb_gadget *gadget) usb_ep_free_request(gadget->ep0, dbgp.req); dbgp.req = NULL; } - - gadget->ep0->driver_data = NULL; } #ifdef CONFIG_USB_G_DBGP_SERIAL @@ -249,18 +243,15 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget) goto fail_1; } - dbgp.i_ep->driver_data = gadget; i_desc.wMaxPacketSize = cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE); dbgp.o_ep = usb_ep_autoconfig(gadget, &o_desc); if (!dbgp.o_ep) { - dbgp.i_ep->driver_data = NULL; stp = 2; - goto fail_2; + goto fail_1; } - dbgp.o_ep->driver_data = gadget; o_desc.wMaxPacketSize = cpu_to_le16(USB_DEBUG_MAX_PACKET_SIZE); @@ -277,8 +268,6 @@ static int dbgp_configure_endpoints(struct usb_gadget *gadget) return 0; -fail_2: - dbgp.i_ep->driver_data = NULL; fail_1: dev_dbg(&dbgp.gadget->dev, "ep config: failure (%d)\n", stp); return -ENODEV; @@ -306,7 +295,6 @@ static int dbgp_bind(struct usb_gadget *gadget, } dbgp.req->length = DBGP_REQ_EP0_LEN; - gadget->ep0->driver_data = gadget; #ifdef CONFIG_USB_G_DBGP_SERIAL dbgp.serial = kzalloc(sizeof(struct gserial), GFP_KERNEL); @@ -356,8 +344,6 @@ static int dbgp_setup(struct usb_gadget *gadget, void *data = NULL; u16 len = 0; - gadget->ep0->driver_data = gadget; - if (request == USB_REQ_GET_DESCRIPTOR) { switch (value>>8) { case USB_DT_DEVICE: