[IRDA]: Oops fix for ksdazzle
This fixes a kernel oops triggered by the ksdazzle SIR driver.
We need more space for input frames, and 2048 should be plenty of it.
Signed-off-by: Alex Villacís Lasso <a_villacis@palosanto.com>
Signed-off-by: Samuel Ortiz <samuel@sortiz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/irda/ksdazzle-sir.c b/drivers/net/irda/ksdazzle-sir.c
index af60f24..d01a285 100644
--- a/drivers/net/irda/ksdazzle-sir.c
+++ b/drivers/net/irda/ksdazzle-sir.c
@@ -1,7 +1,7 @@
/*****************************************************************************
*
* Filename: ksdazzle.c
-* Version: 0.1.1
+* Version: 0.1.2
* Description: Irda KingSun Dazzle USB Dongle
* Status: Experimental
* Author: Alex Villacís Lasso <a_villacis@palosanto.com>
@@ -113,6 +113,7 @@
#define KINGSUN_REQ_SEND 0x09
#define KINGSUN_SND_FIFO_SIZE 2048 /* Max packet we can send */
+#define KINGSUN_RCV_MAX 2048 /* Max transfer we can receive */
struct ksdazzle_speedparams {
__le32 baudrate; /* baud rate, little endian */
@@ -150,7 +151,7 @@
__u8 tx_payload[8];
struct urb *rx_urb;
- __u8 rx_payload[8];
+ __u8 *rx_buf;
iobuff_t rx_unwrap_buff;
struct usb_ctrlrequest *speed_setuprequest;
@@ -440,7 +441,8 @@
/* Start reception. */
usb_fill_int_urb(kingsun->rx_urb, kingsun->usbdev,
usb_rcvintpipe(kingsun->usbdev, kingsun->ep_in),
- kingsun->rx_payload, 8, ksdazzle_rcv_irq, kingsun, 1);
+ kingsun->rx_buf, KINGSUN_RCV_MAX, ksdazzle_rcv_irq,
+ kingsun, 1);
kingsun->rx_urb->status = 0;
err = usb_submit_urb(kingsun->rx_urb, GFP_KERNEL);
if (err) {
@@ -641,6 +643,7 @@
kingsun->tx_buf_clear_sent = 0;
kingsun->rx_urb = NULL;
+ kingsun->rx_buf = NULL;
kingsun->rx_unwrap_buff.in_frame = FALSE;
kingsun->rx_unwrap_buff.state = OUTSIDE_FRAME;
kingsun->rx_unwrap_buff.skb = NULL;
@@ -651,6 +654,11 @@
kingsun->speed_urb = NULL;
kingsun->speedparams.baudrate = 0;
+ /* Allocate input buffer */
+ kingsun->rx_buf = kmalloc(KINGSUN_RCV_MAX, GFP_KERNEL);
+ if (!kingsun->rx_buf)
+ goto free_mem;
+
/* Allocate output buffer */
kingsun->tx_buf_clear = kmalloc(KINGSUN_SND_FIFO_SIZE, GFP_KERNEL);
if (!kingsun->tx_buf_clear)
@@ -714,6 +722,7 @@
free_mem:
kfree(kingsun->speed_setuprequest);
kfree(kingsun->tx_buf_clear);
+ kfree(kingsun->rx_buf);
free_netdev(net);
err_out1:
return ret;
@@ -746,6 +755,7 @@
kfree(kingsun->speed_setuprequest);
kfree(kingsun->tx_buf_clear);
+ kfree(kingsun->rx_buf);
free_netdev(kingsun->netdev);
usb_set_intfdata(intf, NULL);