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.

---
 include/linux/regmap.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

index 9adc7b2..fc9e3c5 100644
@@ -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

2.1.4

The patch

regmap: Rename ret variable in regmap_read_poll_timeout

has been applied to the regmap tree at

git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap.git

All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying to this mail.

Thanks,
Mark

From: Charles Keepax <[email protected]>
Date: Fri, 28 Oct 2016 11:38:53 +0100
Subject: [PATCH] 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.

---
 include/linux/regmap.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

index 9adc7b21903d..fc9e3c576f9c 100644
@@ -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

2.10.1