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caif: handle snprintf() return 

snprintf() returns the number of bytes that would have been written.  It
can be larger than the size of the buffer.  The current code won't
overflow, but people cut and paste this stuff so lets do it right and
also make the static checkers happy.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Dan Carpenter 2010-07-25 21:23:59 +00:00 committed by David S. Miller
parent 652c671746
commit 7b7b0b9059
1 changed files with 3 additions and 0 deletions
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3
drivers/net/caif/caif_spi.c
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@ -165,6 +165,9 @@ static ssize_t dbgfs_state(struct file *file, char __user *user_buf,
len += snprintf((buf + len), (DEBUGFS_BUF_SIZE - len),
"Next RX len: %d\n", cfspi->rx_npck_len);
if (len > DEBUGFS_BUF_SIZE)
len = DEBUGFS_BUF_SIZE;
size = simple_read_from_buffer(user_buf, count, ppos, buf, len);
kfree(buf);