i2c: mux: pca954x: retry updating the mux selection on failure

[cascardo/linux.git] / drivers / i2c / muxes / i2c-mux-pca954x.c

diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
index 528e755..3278ebf 100644 (file)
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -164,7 +164,7 @@ static int pca954x_select_chan(struct i2c_mux_core *muxc, u32 chan)
        /* Only select the channel if its different from the last channel */
        if (data->last_chan != regval) {
                ret = pca954x_reg_write(muxc->parent, client, regval);
-               data->last_chan = regval;
+               data->last_chan = ret ? 0 : regval;
        }
 
        return ret;