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authorOliver Neukum <oliver@neukum.org>2008-03-14 00:53:24 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-03-24 22:26:15 -0700
commit4f4f9c53c241a0205434c76d05eba2c5f160e9d0 (patch)
treebdb487c15fb22e4d07101ff77c3fa9b0453a0ab6
parentcc36bdd47ae51b66780b317c1fa519221f894405 (diff)
USB: sierra: dma fixes
while I was adding autosuspend to that driver I noticed a few issues. You were having DMAed buffers as a part of a structure. This will fail on platforms that are not DMA-coherent (arm, sparc, ppc, ...) Please test this patch to fix it. Signed-off-by: Kevin Lloyd <klloyd@sierrawireless.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/serial/sierra.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c
index e3d44ae8d44..dda4d05fe23 100644
--- a/drivers/usb/serial/sierra.c
+++ b/drivers/usb/serial/sierra.c
@@ -14,7 +14,7 @@
Whom based his on the Keyspan driver by Hugh Blemings <hugh@blemings.org>
*/
-#define DRIVER_VERSION "v.1.2.7"
+#define DRIVER_VERSION "v.1.2.8"
#define DRIVER_AUTHOR "Kevin Lloyd <linux@sierrawireless.com>"
#define DRIVER_DESC "USB Driver for Sierra Wireless USB modems"
@@ -196,9 +196,9 @@ struct sierra_port_private {
spinlock_t lock; /* lock the structure */
int outstanding_urbs; /* number of out urbs in flight */
- /* Input endpoints and buffer for this port */
+ /* Input endpoints and buffers for this port */
struct urb *in_urbs[N_IN_URB];
- char in_buffer[N_IN_URB][IN_BUFLEN];
+ char *in_buffer[N_IN_URB];
/* Settings for the port */
int rts_state; /* Handshaking pins (outputs) */
@@ -638,6 +638,15 @@ static int sierra_startup(struct usb_serial *serial)
return -ENOMEM;
}
spin_lock_init(&portdata->lock);
+ for (j = 0; j < N_IN_URB; j++) {
+ portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
+ if (!portdata->in_buffer[j]) {
+ for (--j; j >= 0; j--)
+ kfree(portdata->in_buffer[j]);
+ kfree(portdata);
+ return -ENOMEM;
+ }
+ }
usb_set_serial_port_data(port, portdata);
@@ -681,7 +690,7 @@ static void sierra_shutdown(struct usb_serial *serial)
for (j = 0; j < N_IN_URB; j++) {
usb_kill_urb(portdata->in_urbs[j]);
usb_free_urb(portdata->in_urbs[j]);
- portdata->in_urbs[j] = NULL;
+ kfree(portdata->in_buffer[j]);
}
kfree(portdata);
usb_set_serial_port_data(port, NULL);