[PATCH] fix for race problem in DVB USB drivers (dibusb)

[pandora-kernel.git] / drivers / media / dvb / dvb-usb / dibusb-common.c

diff --git a/drivers/media/dvb/dvb-usb/dibusb-common.c b/drivers/media/dvb/dvb-usb/dibusb-common.c
index 63b626f..9b9d6f8 100644 (file)
--- a/drivers/media/dvb/dvb-usb/dibusb-common.c
+++ b/drivers/media/dvb/dvb-usb/dibusb-common.c
@@ -70,13 +70,22 @@ EXPORT_SYMBOL(dibusb_power_ctrl);
 
 int dibusb2_0_streaming_ctrl(struct dvb_usb_device *d, int onoff)
 {
-       u8 b[2];
-       b[0] = DIBUSB_REQ_SET_IOCTL;
-       b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
+       u8 b[3] = { 0 };
+       int ret;
+
+       if ((ret = dibusb_streaming_ctrl(d,onoff)) < 0)
+               return ret;
 
-       dvb_usb_generic_write(d,b,3);
+       if (onoff) {
+               b[0] = DIBUSB_REQ_SET_STREAMING_MODE;
+               b[1] = 0x00;
+               if ((ret = dvb_usb_generic_write(d,b,2)) < 0)
+                       return ret;
+       }
 
-       return dibusb_streaming_ctrl(d,onoff);
+       b[0] = DIBUSB_REQ_SET_IOCTL;
+       b[1] = onoff ? DIBUSB_IOCTL_CMD_ENABLE_STREAM : DIBUSB_IOCTL_CMD_DISABLE_STREAM;
+       return dvb_usb_generic_write(d,b,3);
 }
 EXPORT_SYMBOL(dibusb2_0_streaming_ctrl);