[media] rtl2832: disable regmap register cache

Caching register reads causes some random I/O errors on channel
change. Disable caching now in order to avoid those errors.

Reverts partly commit dcadb82

Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

diff --git a/drivers/media/dvb-frontends/rtl2832.c b/drivers/media/dvb-frontends/rtl2832.c
index 5d2d8f45b4b62a1005e261383b7c858d3c5e539e..67faa8d6950efb1e4f8b24c0aad0e99027473b43 100644 (file)
--- a/drivers/media/dvb-frontends/rtl2832.c
+++ b/drivers/media/dvb-frontends/rtl2832.c
@@ -1240,7 +1240,7 @@ static int rtl2832_probe(struct i2c_client *client,
        dev->regmap_config.max_register = 5 * 0x100,
        dev->regmap_config.ranges = regmap_range_cfg,
        dev->regmap_config.num_ranges = ARRAY_SIZE(regmap_range_cfg),
-       dev->regmap_config.cache_type = REGCACHE_RBTREE,
+       dev->regmap_config.cache_type = REGCACHE_NONE,
        dev->regmap = regmap_init(&client->dev, &regmap_bus, client,
                                  &dev->regmap_config);
        if (IS_ERR(dev->regmap)) {