Messages in this thread Patch in this message | | | From | Dimitris Papastamos <> | Subject | [PATCH] regmap: debugfs: Fix reading in register field units | Date | Thu, 7 Feb 2013 10:51:56 +0000 |
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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> --- 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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