This is a note to let you know that I've just added the patch titled
i2c: mux: pca954x: retry updating the mux selection on failure
to the 4.7-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i2c-mux-pca954x-retry-updating-the-mux-selection-on-failure.patch
and it can be found in the queue-4.7 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 463e8f845cbf1c01e4cc8aeef1703212991d8e1e Mon Sep 17 00:00:00 2001
From: Peter Rosin <peda@xxxxxxxxxx>
Date: Wed, 14 Sep 2016 15:24:12 +0200
Subject: i2c: mux: pca954x: retry updating the mux selection on failure
From: Peter Rosin <peda@xxxxxxxxxx>
commit 463e8f845cbf1c01e4cc8aeef1703212991d8e1e upstream.
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@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/muxes/i2c-mux-pca954x.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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 i2
/* 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;
Patches currently in stable-queue which might be from peda@xxxxxxxxxx are
queue-4.7/i2c-mux-pca954x-retry-updating-the-mux-selection-on-failure.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html