Patch "i2c: mv64xxx: continue probe when clock-frequency is missing" has been added to the 3.14-stable tree

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This is a note to let you know that I've just added the patch titled

    i2c: mv64xxx: continue probe when clock-frequency is missing

to the 3.14-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-mv64xxx-continue-probe-when-clock-frequency-is-missing.patch
and it can be found in the queue-3.14 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 0ce4bc1dbdd911ae1763e2d4ff36bd1b214a59f7 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@xxxxxxxx>
Date: Mon, 1 Sep 2014 22:28:13 +0800
Subject: i2c: mv64xxx: continue probe when clock-frequency is missing

From: Chen-Yu Tsai <wens@xxxxxxxx>

commit 0ce4bc1dbdd911ae1763e2d4ff36bd1b214a59f7 upstream.

The "clock-frequency" DT property is listed as optional, However,
the current code stores the return value of of_property_read_u32 in
the return code of mv64xxx_of_config, but then forgets to clear it
after setting the default value of "clock-frequency". It is then
passed out to the main probe function, resulting in a probe failure
when "clock-frequency" is missing.

This patch checks and then throws away the return value of
of_property_read_u32, instead of storing it and having to clear it
afterwards.

This issue was discovered after the property was removed from all
sunxi DTs.

Fixes: 4c730a06c19bb ("i2c: mv64xxx: Set bus frequency to 100kHz if clock-frequency is not provided")
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
Acked-by: Andrew Lunn <andrew@xxxxxxx>
Acked-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/i2c/busses/i2c-mv64xxx.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/i2c/busses/i2c-mv64xxx.c
+++ b/drivers/i2c/busses/i2c-mv64xxx.c
@@ -748,8 +748,7 @@ mv64xxx_of_config(struct mv64xxx_i2c_dat
 	}
 	tclk = clk_get_rate(drv_data->clk);
 
-	rc = of_property_read_u32(np, "clock-frequency", &bus_freq);
-	if (rc)
+	if (of_property_read_u32(np, "clock-frequency", &bus_freq))
 		bus_freq = 100000; /* 100kHz by default */
 
 	if (!mv64xxx_find_baud_factors(bus_freq, tclk,


Patches currently in stable-queue which might be from wens@xxxxxxxx are

queue-3.14/i2c-mv64xxx-continue-probe-when-clock-frequency-is-missing.patch
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