From adf08d481b52824c87af028fc74dc692d179f7f4 Mon Sep 17 00:00:00 2001
From: Masahiro Yamada <yamada.masahiro@socionext.com>
Date: Thu, 13 Oct 2016 19:07:54 +0900
Subject: [PATCH 1/2] regmap: include <linux/delay.h> from
 include/linux/regmap.h

The readx_poll_timeout() macro calls usleep_range(), which is
declared in <linux/delay.h>.

Make include/linux/regmap.h include <linux/delay.h>, like
include/linux/iopoll.h does.  Otherwise, users of the macro
will see "implicit declaration of function 'usleep_range'" error.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 include/linux/regmap.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 9adc7b21903d..e5157e39ff22 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -15,6 +15,7 @@
 
 #include <linux/list.h>
 #include <linux/rbtree.h>
+#include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/bug.h>
 #include <linux/lockdep.h>

From 72193a953ada9058e46970838cc42cbd18bf4eba Mon Sep 17 00:00:00 2001
From: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Date: Fri, 28 Oct 2016 11:38:53 +0100
Subject: [PATCH 2/2] regmap: Rename ret variable in regmap_read_poll_timeout

As almost all of the callers of the regmap_read_poll_timeout macro
will include a local ret variable we will always get a Sparse warning
about the duplication of the ret variable:

warning: symbol 'ret' shadows an earlier one

Simply rename the ret variable in the marco to pollret to make this
significantly less likely to happen.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---
 include/linux/regmap.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 9adc7b21903d..fc9e3c576f9c 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -116,22 +116,22 @@ struct reg_sequence {
 #define regmap_read_poll_timeout(map, addr, val, cond, sleep_us, timeout_us) \
 ({ \
 	ktime_t timeout = ktime_add_us(ktime_get(), timeout_us); \
-	int ret; \
+	int pollret; \
 	might_sleep_if(sleep_us); \
 	for (;;) { \
-		ret = regmap_read((map), (addr), &(val)); \
-		if (ret) \
+		pollret = regmap_read((map), (addr), &(val)); \
+		if (pollret) \
 			break; \
 		if (cond) \
 			break; \
 		if (timeout_us && ktime_compare(ktime_get(), timeout) > 0) { \
-			ret = regmap_read((map), (addr), &(val)); \
+			pollret = regmap_read((map), (addr), &(val)); \
 			break; \
 		} \
 		if (sleep_us) \
 			usleep_range((sleep_us >> 2) + 1, sleep_us); \
 	} \
-	ret ?: ((cond) ? 0 : -ETIMEDOUT); \
+	pollret ?: ((cond) ? 0 : -ETIMEDOUT); \
 })
 
 #ifdef CONFIG_REGMAP