[PATCH 25/26] usb: gadget: legacy: dbgp: eliminate abuse of ep->driver data

Robert Baldyga
2015-09-15T14:30:20Z

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 <r.baldyga@samsung.com>
---
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 5231a32..99ca3da 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:
--
1.9.1