[media] em28xx: Do not modify EM28XX_R06_I2C_CLK for em2800

writing the EM28XX_R06_I2C_CLK register leads to the problem that the
i2c bus on the Terratec Cinergy 200 USB is no longer usable when the
system is rebooted.

The device needs to be unplugged in order to bring it back to life.
Attached patch conditionally disables the write in
em28xx_pre_card_setup() like it is already done in em28xx_card_setup().

Signed-off-by: Sascha Sommer <saschasommer@freenet.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/video/em28xx/em28xx-cards.c b/drivers/media/video/em28xx/em28xx-cards.c
index 6448011e3a1b5e076ea160b1e89b51bbc8cb5d36..21cc910ecd83b1da018f05a09563c4f98fe0ba79 100644 (file)
--- a/drivers/media/video/em28xx/em28xx-cards.c
+++ b/drivers/media/video/em28xx/em28xx-cards.c
@@ -2287,7 +2287,8 @@ void em28xx_pre_card_setup(struct em28xx *dev)
        /* Set the initial XCLK and I2C clock values based on the board
           definition */
        em28xx_write_reg(dev, EM28XX_R0F_XCLK, dev->board.xclk & 0x7f);
-       em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, dev->board.i2c_speed);
+       if (!dev->board.is_em2800)
+               em28xx_write_reg(dev, EM28XX_R06_I2C_CLK, dev->board.i2c_speed);
        msleep(50);
 
        /* request some modules */