[U-Boot] [PATCH V4 03/17] usb: gadget: ether set wMaxPacketSize

Troy Kisky
2013-09-20T03:29:26Z

set wMaxPacketSize for full speed descriptors
fs_source_desc, fs_sink_desc to 64.

Full-speed bulk endpoint can have a maximum packet size of
8, 16, 32, or 64 bytes, so choice 64.

The hs_source_desc, hs_sink_desc, already have their wMaxPacketSize
set to 512. That is the only legal value for high speed bulk endpoints.

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

---
v4: expanded commit message
---
drivers/usb/gadget/ether.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/usb/gadget/ether.c b/drivers/usb/gadget/ether.c
index 700d5fb..988cffb 100644
--- a/drivers/usb/gadget/ether.c
+++ b/drivers/usb/gadget/ether.c
@@ -635,6 +635,7 @@ fs_source_desc = {

.bEndpointAddress = USB_DIR_IN,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = __constant_cpu_to_le16(64),
};

static struct usb_endpoint_descriptor
@@ -644,6 +645,7 @@ fs_sink_desc = {

.bEndpointAddress = USB_DIR_OUT,
.bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = __constant_cpu_to_le16(64),
};

static const struct usb_descriptor_header *fs_eth_function[11] = {
--
1.8.1.2