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usb: gadget: move USB_BUFSIZ into global composite.h 

This patch moves USB_BUFSIZ into global header file as
USB_COMP_EP0_BUFSIZ. There is currently only one user (f_sourcesink)
besides composite which need it. Ideally f_sourcesink would have its
own ep0 buffer. Lets keep it that way it was for now.

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sebastian Andrzej Siewior 2012-09-10 15:01:51 +02:00 committed by Felipe Balbi
parent dc995fc27c
commit e13f17ff88
3 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/usb/gadget/composite.c
View File

@ -28,9 +28,6 @@
* with the relevant device-wide data.
*/
/* big enough to hold our biggest descriptor */
#define USB_BUFSIZ 1024
/* Some systems will need runtime overrides for the product identifiers
* published in the device descriptor, either numbers or strings or both.
* String parameters are in UTF-8 (superset of ASCII's 7 bit characters).
@ -355,10 +352,11 @@ static int config_buf(struct usb_configuration *config,
{
struct usb_config_descriptor *c = buf;
void *next = buf + USB_DT_CONFIG_SIZE;
int len = USB_BUFSIZ - USB_DT_CONFIG_SIZE;
int len;
struct usb_function *f;
int status;
len = USB_COMP_EP0_BUFSIZ - USB_DT_CONFIG_SIZE;
/* write the config descriptor */
c = buf;
c->bLength = USB_DT_CONFIG_SIZE;
@ -1445,13 +1443,13 @@ static int composite_bind(struct usb_gadget *gadget,
cdev->req = usb_ep_alloc_request(gadget->ep0, GFP_KERNEL);
if (!cdev->req)
goto fail;
cdev->req->buf = kmalloc(USB_BUFSIZ, GFP_KERNEL);
cdev->req->buf = kmalloc(USB_COMP_EP0_BUFSIZ, GFP_KERNEL);
if (!cdev->req->buf)
goto fail;
cdev->req->complete = composite_setup_complete;
gadget->ep0->driver_data = cdev;
cdev->bufsiz = USB_BUFSIZ;
cdev->bufsiz = USB_COMP_EP0_BUFSIZ;
cdev->driver = composite;
/*

2
drivers/usb/gadget/f_sourcesink.c
View File

@ -795,7 +795,7 @@ static int sourcesink_setup(struct usb_configuration *c,
u16 w_value = le16_to_cpu(ctrl->wValue);
u16 w_length = le16_to_cpu(ctrl->wLength);
req->length = USB_BUFSIZ;
req->length = USB_COMP_EP0_BUFSIZ;
/* composite driver infrastructure handles everything except
* the two control test requests.

3
include/linux/usb/composite.h
View File

@ -46,6 +46,9 @@
*/
#define USB_GADGET_DELAYED_STATUS 0x7fff /* Impossibly large value */
/* big enough to hold our biggest descriptor */
#define USB_COMP_EP0_BUFSIZ 1024
struct usb_configuration;
/**