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Message-Id: <1360234316-8749-1-git-send-email-dp@opensource.wolfsonmicro.com>
Date: Thu, 7 Feb 2013 10:51:56 +0000
From: Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
To: Mark Brown <broonie@...nsource.wolfsonmicro.com>
Cc: linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com
Subject: [PATCH] regmap: debugfs: Fix reading in register field units
At the moment, if the length of the register field format is
N bytes, we can only get anything meaningful back to userspace
by providing a buffer that is N + 2 bytes large. Fix this
so we that we only need to provide a buffer of N bytes.
Signed-off-by: Dimitris Papastamos <dp@...nsource.wolfsonmicro.com>
---
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 0445f2f..96990d2 100644
--- a/drivers/base/regmap/regmap-debugfs.c
+++ b/drivers/base/regmap/regmap-debugfs.c
@@ -187,7 +187,7 @@ static ssize_t regmap_map_read_file(struct file *file, char __user *user_buf,
/* If we're in the region the user is trying to read */
if (p >= *ppos) {
/* ...but not beyond it */
- if (buf_pos + 1 + map->debugfs_tot_len >= count)
+ if (buf_pos + map->debugfs_tot_len > count)
break;
/* Format the register */
--
1.8.1.2
--
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