Commit 463e8f84 authored Sep 14, 2016 by Peter Rosin Committed by Wolfram Sang Sep 21, 2016

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



The cached value of the last selected channel prevents retries on the
next call, even on failure to update the selected channel. Fix that.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org

parent 371a0153

drivers/i2c/muxes/i2c-mux-pca954x.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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