From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: Mark Brown <broonie@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"Rafael J. Wysocki" <rafael@kernel.org>,
Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Cc: linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
Mark Brown <broonie@opensource.wolfsonmicro.com>
Subject: [PATCH] regmap: debugfs: Fix a erroneous check after snprintf()
Date: Mon, 4 Sep 2023 22:04:06 +0200 [thread overview]
Message-ID: <8595de2462c490561f70020a6d11f4d6b652b468.1693857825.git.christophe.jaillet@wanadoo.fr> (raw)
This error handling looks really strange.
Check if the string has been truncated instead.
Fixes: f0c2319f9f19 ("regmap: Expose the driver name in debugfs")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
drivers/base/regmap/regmap-debugfs.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c
index f36027591e1a..bdd80b73c3e6 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -48,7 +48,7 @@ static ssize_t regmap_name_read_file(struct file *file,
name = map->dev->driver->name;
ret = snprintf(buf, PAGE_SIZE, "%s\n", name);
- if (ret < 0) {
+ if (ret >= PAGE_SIZE) {
kfree(buf);
return ret;
}
--
2.34.1
next reply other threads:[~2023-09-04 20:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-04 20:04 Christophe JAILLET [this message]
2023-09-11 18:03 ` [PATCH] regmap: debugfs: Fix a erroneous check after snprintf() Mark Brown
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