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

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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>
This commit is contained in:
Vamsi Krishna
2012-01-27 16:29:21 -08:00
parent 86bc6639fc
commit 6ef832f40d
2 changed files with 8 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/usb/serial/usb-wwan.h
View File

@@ -31,10 +31,10 @@ extern int usb_wwan_resume(struct usb_serial *serial);
/* per port private data */ /* per port private data */
#define N_IN_URB 4 #define N_IN_URB 5
#define N_OUT_URB 4 #define N_OUT_URB 5
#define IN_BUFLEN 4096 #define IN_BUFLEN 65536
#define OUT_BUFLEN 4096 #define OUT_BUFLEN 65536
struct usb_wwan_intf_private { struct usb_wwan_intf_private {
spinlock_t susp_lock; spinlock_t susp_lock;

9
drivers/usb/serial/usb_wwan.c
View File

@@ -410,6 +410,7 @@ int usb_wwan_open(struct tty_struct *tty, struct usb_serial_port *port)
tty->raw = 1; tty->raw = 1;
tty->real_raw = 1; tty->real_raw = 1;
set_bit(TTY_NO_WRITE_SPLIT, &tty->flags);
dbg("%s", __func__); dbg("%s", __func__);
/* Start reading from the IN endpoint */ /* Start reading from the IN endpoint */
@@ -552,7 +553,7 @@ int usb_wwan_startup(struct usb_serial *serial)
init_usb_anchor(&portdata->delayed); init_usb_anchor(&portdata->delayed);
for (j = 0; j < N_IN_URB; j++) { for (j = 0; j < N_IN_URB; j++) {
buffer = (u8 *) __get_free_page(GFP_KERNEL); buffer = kmalloc(IN_BUFLEN, GFP_KERNEL);
if (!buffer) if (!buffer)
goto bail_out_error; goto bail_out_error;
portdata->in_buffer[j] = buffer; portdata->in_buffer[j] = buffer;
@@ -581,8 +582,7 @@ bail_out_error2:
kfree(portdata->out_buffer[j]); kfree(portdata->out_buffer[j]);
bail_out_error: bail_out_error:
for (j = 0; j < N_IN_URB; j++) for (j = 0; j < N_IN_URB; j++)
if (portdata->in_buffer[j]) kfree(portdata->in_buffer[j]);
free_page((unsigned long)portdata->in_buffer[j]);
kfree(portdata); kfree(portdata);
return 1; return 1;
} }
@@ -628,8 +628,7 @@ void usb_wwan_release(struct usb_serial *serial)
for (j = 0; j < N_IN_URB; j++) { for (j = 0; j < N_IN_URB; j++) {
usb_free_urb(portdata->in_urbs[j]); usb_free_urb(portdata->in_urbs[j]);
free_page((unsigned long) kfree(portdata->in_buffer[j]);
portdata->in_buffer[j]);
portdata->in_urbs[j] = NULL; portdata->in_urbs[j] = NULL;
} }
for (j = 0; j < N_OUT_URB; j++) { for (j = 0; j < N_OUT_URB; j++) {