commit 6ef832f40d7e647f86e93a6bbfdff8e583599f23
author Vamsi Krishna <vskrishn@codeaurora.org> Fri Jan 27 16:29:21 2012 -0800
committer Vamsi Krishna <vskrishn@codeaurora.org> Mon Jan 30 18:05:45 2012 -0800
tree b1cd7e6ebc87876dafbe8bed590b4fa0afd0f6f7
parent 86bc6639fccd9d21de19b3bb14d6d920ff20342e

usb: Increase USB buffer size to match 9x15 buffer sizes

USB S/W on 9x15 is designed to handle 65K packet size for
flashless boot and efs-sync functions. Match buffers on 8064
usb host mode driver to achieve better throughput.

Change-Id: I6f5b50d08ad4ea59e770e2a3e8ad00d944f05e54
Signed-off-by: Vamsi Krishna <vskrishn@codeaurora.org>

drivers/usb/serial/usb_wwan.c

diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c
index fcf4b08..2a08101 100644
--- a/drivers/usb/serial/usb_wwan.c
+++ b/drivers/usb/serial/usb_wwan.c
@@ -410,6 +410,7 @@
 	tty->raw = 1;
 	tty->real_raw = 1;
 
+	set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
 	dbg("%s", __func__);
 
 	/* Start reading from the IN endpoint */
@@ -552,7 +553,7 @@
 		init_usb_anchor(&portdata->delayed);
 
 		for (j = 0; j < N_IN_URB; j++) {
-			buffer = (u8 *) __get_free_page(GFP_KERNEL);
+			buffer = kmalloc(IN_BUFLEN, GFP_KERNEL);
 			if (!buffer)
 				goto bail_out_error;
 			portdata->in_buffer[j] = buffer;
@@ -581,8 +582,7 @@
 		kfree(portdata->out_buffer[j]);
 bail_out_error:
 	for (j = 0; j < N_IN_URB; j++)
-		if (portdata->in_buffer[j])
-			free_page((unsigned long)portdata->in_buffer[j]);
+		kfree(portdata->in_buffer[j]);
 	kfree(portdata);
 	return 1;
 }
@@ -628,8 +628,7 @@
 
 		for (j = 0; j < N_IN_URB; j++) {
 			usb_free_urb(portdata->in_urbs[j]);
-			free_page((unsigned long)
-				  portdata->in_buffer[j]);
+			kfree(portdata->in_buffer[j]);
 			portdata->in_urbs[j] = NULL;
 		}
 		for (j = 0; j < N_OUT_URB; j++) {