staging:iio:ad2s1210: Remove old_data from ad2s1210_state

The variable old_data is a bool type, which only receives the value
'true' in the function ad2s1210_config_write and ad2s1210_config_read.
There is no other use for this variable. This patch removes old_data
from the ad2s1210_state and from all the function that use it.

Signed-off-by: Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
index 79cb56670fc2f403cd93b8a32e42100c858f0056..ac13b99bd9cb33af56a0dbf68d4c9ec9a68b1ea5 100644 (file)
--- a/drivers/staging/iio/resolver/ad2s1210.c
+++ b/drivers/staging/iio/resolver/ad2s1210.c
@@ -76,7 +76,6 @@ struct ad2s1210_state {
        unsigned int fclkin;
        unsigned int fexcit;
        bool hysteresis;
-       bool old_data;
        u8 resolution;
        enum ad2s1210_mode mode;
        u8 rx[2] ____cacheline_aligned;
@@ -107,7 +106,6 @@ static int ad2s1210_config_write(struct ad2s1210_state *st, u8 data)
        ret = spi_write(st->sdev, st->tx, 1);
        if (ret < 0)
                return ret;
-       st->old_data = true;
 
        return 0;
 }
@@ -129,7 +127,6 @@ static int ad2s1210_config_read(struct ad2s1210_state *st,
        ret = spi_sync_transfer(st->sdev, &xfer, 1);
        if (ret < 0)
                return ret;
-       st->old_data = true;
 
        return st->rx[1];
 }