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| author | Dan Carpenter <error27@gmail.com> | 2010-04-06 19:45:12 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2010-04-07 14:36:27 +0200 |
| commit | 39a37ce1cc5eef420604fa68b776ff5dab400340 (patch) | |
| tree | 6303b715525daaefbc5b2ced63a1e697d47667a1 /lib/dma-debug.c | |
| parent | 12ff4bf58b64ad3b8fb8e27889c99dcd5aa6fb0b (diff) | |
| download | lwn-39a37ce1cc5eef420604fa68b776ff5dab400340.tar.gz lwn-39a37ce1cc5eef420604fa68b776ff5dab400340.zip | |
dma-debug: Cleanup for copy-loop in filter_write()
Earlier in this function we set the last byte of "buf" to NULL so we
always hit the break statement and "i" is never equal to NAME_MAX_LEN.
This patch doesn't change how the driver works but it silences a Smatch
warning and it makes it clearer that we don't write past the end of the
array.
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'lib/dma-debug.c')
| -rw-r--r-- | lib/dma-debug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c index ba8b67039d13..01e64270e246 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -570,7 +570,7 @@ static ssize_t filter_write(struct file *file, const char __user *userbuf, * Now parse out the first token and use it as the name for the * driver to filter for. */ - for (i = 0; i < NAME_MAX_LEN; ++i) { + for (i = 0; i < NAME_MAX_LEN - 1; ++i) { current_driver_name[i] = buf[i]; if (isspace(buf[i]) || buf[i] == ' ' || buf[i] == 0) break; |