This is a note to let you know that I've just added the patch titled
i2c: mux: pca954x: Use __i2c_transfer because of quirks
to the 4.1-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-use-__i2c_transfer-because-of-quirks.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0a8237ae319ab5988d40a7a9b33d68846aae34b4 Mon Sep 17 00:00:00 2001
From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Date: Fri, 12 Jun 2015 14:41:00 +0200
Subject: i2c: mux: pca954x: Use __i2c_transfer because of quirks
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From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
commit 0a8237ae319ab5988d40a7a9b33d68846aae34b4 upstream.
pca9541 and pca954x are calling master_xfer() of the parent adapter directly
thus bypassing the quirks checks of the adapter. Use __i2c_transfer() instead.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxx>
Tested-by: Łukasz Gemborowski <lukasz.gemborowski@xxxxxxxxx>
Acked-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
Reviewed-by: Jisheng Zhang <jszhang@xxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Fixes: b7f625840267b1 ("i2c: add quirk checks to core")
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i2c/muxes/i2c-mux-pca9541.c | 4 ++--
drivers/i2c/muxes/i2c-mux-pca954x.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/i2c/muxes/i2c-mux-pca9541.c
+++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
@@ -104,7 +104,7 @@ static int pca9541_reg_write(struct i2c_
buf[0] = command;
buf[1] = val;
msg.buf = buf;
- ret = adap->algo->master_xfer(adap, &msg, 1);
+ ret = __i2c_transfer(adap, &msg, 1);
} else {
union i2c_smbus_data data;
@@ -144,7 +144,7 @@ static int pca9541_reg_read(struct i2c_c
.buf = &val
}
};
- ret = adap->algo->master_xfer(adap, msg, 2);
+ ret = __i2c_transfer(adap, msg, 2);
if (ret == 2)
ret = val;
else if (ret >= 0)
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -134,7 +134,7 @@ static int pca954x_reg_write(struct i2c_
msg.len = 1;
buf[0] = val;
msg.buf = buf;
- ret = adap->algo->master_xfer(adap, &msg, 1);
+ ret = __i2c_transfer(adap, &msg, 1);
} else {
union i2c_smbus_data data;
ret = adap->algo->smbus_xfer(adap, client->addr,
Patches currently in stable-queue which might be from alexander.sverdlin@xxxxxxxxx are
queue-4.1/i2c-mux-pca954x-use-__i2c_transfer-because-of-quirks.patch
queue-4.1/i2c-mux-use-__i2c_transfer-instead-of-calling-parent-s-master_xfer.patch
queue-4.1/i2c-use-parent-adapter-quirks-in-mux.patch
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