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 <min...@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bige...@linutronix.de>
---
drivers/usb/gadget/composite.c | 10 ++++------
drivers/usb/gadget/f_sourcesink.c | 2 +-
include/linux/usb/composite.h | 3 +++
3 files changed, 8 insertions(+), 7 deletions(-)
diff --git a/drivers/usb/gadget/composite.c b/drivers/usb/gadget/composite.c
index 5615675..be71dd8 100644
--- a/drivers/usb/gadget/composite.c
+++ b/drivers/usb/gadget/composite.c
@@ -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 = cdriver;
/*
diff --git a/drivers/usb/gadget/f_sourcesink.c
b/drivers/usb/gadget/f_sourcesink.c
index 5c1b68b..3c126fd 100644
--- a/drivers/usb/gadget/f_sourcesink.c
+++ b/drivers/usb/gadget/f_sourcesink.c
@@ -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.
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index 43d6b9c..89d91b6 100644
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -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;
/**
--
1.7.10.4
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