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openwrt-xburst/target/linux/generic/patches-2.6.37/801-usb_serial_endpoint_size.patch
acoul 8be1093039 target/linux: add preliminary 2.6.37 kernel support
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@23828 3c298f89-4303-0410-b956-a3cf2f4a3e73
2010-11-03 16:13:33 +00:00

26 lines
983 B
Diff

--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -61,6 +61,7 @@ static struct usb_driver usb_serial_driv
drivers depend on it.
*/
+static ushort maxSize = 0;
static int debug;
/* initially all NULL */
static struct usb_serial *serial_table[SERIAL_TTY_MINORS];
@@ -913,7 +914,7 @@ int usb_serial_probe(struct usb_interfac
}
buffer_size = serial->type->bulk_in_size;
if (!buffer_size)
- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
+ buffer_size = (endpoint->wMaxPacketSize > maxSize) ? endpoint->wMaxPacketSize : maxSize;
port->bulk_in_size = buffer_size;
port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
port->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
@@ -1386,3 +1387,5 @@ MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(debug, "Debug enabled or not");
+module_param(maxSize, ushort,0);
+MODULE_PARM_DESC(maxSize,"User specified USB endpoint size");