[media] siano: make it work again with CONFIG_VMAP_STACK

[linux-beck.git] / drivers / media / usb / siano / smsusb.c

diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c
index a4dcaec31d02c06d82cddd81b0a47a4eb895608a..8c1f926567ec04425f36fd9fd68d80cf37df98a4 100644 (file)
--- a/drivers/media/usb/siano/smsusb.c
+++ b/drivers/media/usb/siano/smsusb.c
@@ -218,22 +218,30 @@ static int smsusb_start_streaming(struct smsusb_device_t *dev)
 static int smsusb_sendrequest(void *context, void *buffer, size_t size)
 {
        struct smsusb_device_t *dev = (struct smsusb_device_t *) context;
-       struct sms_msg_hdr *phdr = (struct sms_msg_hdr *) buffer;
-       int dummy;
+       struct sms_msg_hdr *phdr;
+       int dummy, ret;
 
        if (dev->state != SMSUSB_ACTIVE) {
                pr_debug("Device not active yet\n");
                return -ENOENT;
        }
 
+       phdr = kmalloc(size, GFP_KERNEL);
+       if (!phdr)
+               return -ENOMEM;
+       memcpy(phdr, buffer, size);
+
        pr_debug("sending %s(%d) size: %d\n",
                  smscore_translate_msg(phdr->msg_type), phdr->msg_type,
                  phdr->msg_length);
 
        smsendian_handle_tx_message((struct sms_msg_data *) phdr);
-       smsendian_handle_message_header((struct sms_msg_hdr *)buffer);
-       return usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
-                           buffer, size, &dummy, 1000);
+       smsendian_handle_message_header((struct sms_msg_hdr *)phdr);
+       ret = usb_bulk_msg(dev->udev, usb_sndbulkpipe(dev->udev, 2),
+                           phdr, size, &dummy, 1000);
+
+       kfree(phdr);
+       return ret;
 }
 
 static char *smsusb1_fw_lkup[] = {