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add high-speed usb serial fix from Junxion (closes: #2274)

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@8549 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
nico 2007-08-30 16:04:31 +00:00
parent b4c2371ebb
commit 8c1de14503
1 changed files with 25 additions and 0 deletions
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25
target/linux/generic-2.6/patches-2.6.22/601-usb_serial_endpoint_size.patch Normal file
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@ -0,0 +1,25 @@
--- linux-2.6.22.4-old/drivers/usb/serial/usb-serial.c 2007-08-21 06:33:06.000000000 +0200
+++ linux-2.6.22.4-new/drivers/usb/serial/usb-serial.c 2007-08-26 15:43:11.000000000 +0200
@@ -56,6 +56,7 @@
drivers depend on it.
*/
+static ushort maxSize = 0;
static int debug;
static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */
static spinlock_t table_lock;
@@ -864,7 +865,7 @@
dev_err(&interface->dev, "No free urbs available\n");
goto probe_error;
}
- 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);
@@ -1245,3 +1246,5 @@
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");