diff options
| author | Andrew Morton <akpm@linux-foundation.org> | 2011-07-28 13:59:35 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-02 16:09:46 -0700 |
| commit | 09f9390d797ff34020faab866996884fd93a0081 (patch) | |
| tree | 779bdc0689d275622d3213560c613267ee3c1d66 /drivers/staging | |
| parent | 8f89615528b11eabda68faaf2438d09c9565a125 (diff) | |
drivers/staging/speakup/devsynth.c: fix "buffer size is not provably correct" error
x86_64 allmodconfig:
In file included from arch/x86/include/asm/uaccess.h:572,
from include/linux/uaccess.h:5,
from drivers/staging/speakup/devsynth.c:4:
In function 'copy_from_user',
inlined from 'speakup_file_write' at drivers/staging/speakup/devsynth.c:28:
arch/x86/include/asm/uaccess_64.h:64: error: call to 'copy_from_user_overflow' declared with attribute error: copy_from_user() buffer size is not provably correct
I'm not sure what was unprovable about it, but size_t is the correct type
anyway.
Also replace needless min_t() with min()
Cc: William Hubbs <w.d.hubbs@gmail.com>
Cc: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging')
| -rw-r--r-- | drivers/staging/speakup/devsynth.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/staging/speakup/devsynth.c b/drivers/staging/speakup/devsynth.c index 39dc586fc8b..940769ef883 100644 --- a/drivers/staging/speakup/devsynth.c +++ b/drivers/staging/speakup/devsynth.c @@ -18,13 +18,14 @@ static ssize_t speakup_file_write(struct file *fp, const char *buffer, { size_t count = nbytes; const char *ptr = buffer; - int bytes; + size_t bytes; unsigned long flags; u_char buf[256]; + if (synth == NULL) return -ENODEV; while (count > 0) { - bytes = min_t(size_t, count, sizeof(buf)); + bytes = min(count, sizeof(buf)); if (copy_from_user(buf, ptr, bytes)) return -EFAULT; count -= bytes; |