The patch below does not apply to the 3.12-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

>From 236c427cbc990e03ec8b39ce8ee9220705daeff9 Mon Sep 17 00:00:00 2001
From: Tim Harvey <[email protected]>
Date: Tue, 5 Nov 2013 21:17:25 -0800
Subject: [PATCH] regulator: pfuze100: allow misprogrammed ID

prior to week 08 of 2013 Freescale misprogrammed between 1 and 3% of
PFUZE1000 parts with a ID=0x8 instead of the expected ID=0x0

Signed-off-by: Tim Harvey <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
Cc: [email protected]

diff --git a/drivers/regulator/pfuze100-regulator.c 
b/drivers/regulator/pfuze100-regulator.c
index 565a631fff70..8b5e4c712a01 100644
--- a/drivers/regulator/pfuze100-regulator.c
+++ b/drivers/regulator/pfuze100-regulator.c
@@ -308,9 +308,15 @@ static int pfuze_identify(struct pfuze_chip *pfuze_chip)
        if (ret)
                return ret;
 
-       if (value & 0x0f) {
-               dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
-               return -ENODEV;
+       switch (value & 0x0f) {
+               /* Freescale misprogrammed 1-3% of parts prior to week 8 of 
2013 as ID=8 */
+               case 0x8:
+                       dev_info(pfuze_chip->dev, "Assuming misprogrammed 
ID=0x8");
+               case 0x0:
+                       break;
+               default:
+                       dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
+                       return -ENODEV;
        }
 
        ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);

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