From: Dimitris Papastamos Date: Thu, 7 Feb 2013 10:51:56 +0000 (+0000) Subject: regmap: debugfs: Fix reading in register field units X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=f3eb83994cb4c172ce5028b5ae7ea08462cc3f1d;p=deliverable%2Flinux.git 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 Signed-off-by: Mark Brown --- 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 */