linux-kernel - [PATCH] regmap: check right noinc bounds in debug print

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Date:   Tue, 23 Aug 2022 15:57:00 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: [PATCH] regmap: check right noinc bounds in debug print

We were using the wrong bound in the debug prints: this
needs to be the number of elements, not the number of bytes,
since we're indexing into an element-size typed array.

Fixes: c20cc099b30a ("regmap: Support accelerated noinc operations")
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
---
 drivers/base/regmap/regmap.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 41ff9f18b6a3..f8815a8fedcb 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2193,7 +2193,7 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg,
 
 	if (!ret && regmap_should_log(map)) {
 		dev_info(map->dev, "%x %s [", reg, write ? "<=" : "=>");
-		for (i = 0; i < val_len; i++) {
+		for (i = 0; i < val_count; i++) {
 			switch (val_bytes) {
 			case 1:
 				pr_cont("%x", u8p[i]);
@@ -2212,7 +2212,7 @@ static int regmap_noinc_readwrite(struct regmap *map, unsigned int reg,
 			default:
 				break;
 			}
-			if (i == (val_len - 1))
+			if (i == (val_count - 1))
 				pr_cont("]\n");
 			else
 				pr_cont(",");
-- 
2.37.2