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| author | Dimitris Papastamos <dp@opensource.wolfsonmicro.com> | 2013-02-07 14:51:56 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-02-08 15:31:34 +0400 |
| commit | f3eb83994cb4c172ce5028b5ae7ea08462cc3f1d (patch) | |
| tree | 7e246716667bd4a4ce6da0cafd60777db529e3cb | |
| parent | a3471469bcba61f8f18ca4c267b0cdd90a61e035 (diff) | |
| download | linux-f3eb83994cb4c172ce5028b5ae7ea08462cc3f1d.tar.xz | |
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@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
| -rw-r--r-- | drivers/base/regmap/regmap-debugfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/base/regmap/regmap-debugfs.c b/drivers/base/regmap/regmap-debugfs.c index faa93cc6802e..0e94fd3c95a3 100644 --- a/drivers/base/regmap/regmap-debugfs.c +++ b/drivers/base/regmap/regmap-debugfs.c @@ -185,7 +185,7 @@ static ssize_t regmap_read_debugfs(struct regmap *map, unsigned int from, /* 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 */ |