4.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alex Hemme <ahemme@xxxxxxxxx>
commit ad092de60f865c1ad94221bd06d381ecea446cc8 upstream.
Deselect functionality can be ignored for device-trees with
"i2c-mux-idle-disconnect" entries if no platform_data is available.
By enabling the deselect functionality outside the platform_data
block the logic works as it did in previous kernels.
Fixes: 7fcac9807175 ("i2c: i2c-mux-pca954x: convert to use an explicit i2c mux core")
Signed-off-by: Alex Hemme <ahemme@xxxxxxxxx>
Signed-off-by: Ziyang Wu <ziywu@xxxxxxxxx>
[touched up a few minor issues /peda]
Signed-off-by: Peter Rosin <peda@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/muxes/i2c-mux-pca954x.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -247,9 +247,9 @@ static int pca954x_probe(struct i2c_clie
/* discard unconfigured channels */
break;
idle_disconnect_pd = pdata->modes[num].deselect_on_exit;
- data->deselect |= (idle_disconnect_pd
- || idle_disconnect_dt) << num;
}
+ data->deselect |= (idle_disconnect_pd ||
+ idle_disconnect_dt) << num;
ret = i2c_mux_add_adapter(muxc, force, num, class);
--
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