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| author | Jiri Slaby <jslaby@suse.cz> | 2010-01-10 12:30:16 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-03-02 23:43:16 +0100 |
| commit | ca1cce49c2778439d00bbf516f70386f3d3b71e5 (patch) | |
| tree | 637225c572d045b9273c8239d211326d314f5019 /drivers/char/synclink.c | |
| parent | tty: declare MODULE_FIRMWARE in various drivers (diff) | |
| download | linux-ca1cce49c2778439d00bbf516f70386f3d3b71e5.tar.xz linux-ca1cce49c2778439d00bbf516f70386f3d3b71e5.zip | |
Char: synclink, remove unnecessary checks
Stanse found a potential null dereference in mgsl_put_char and
mgsl_write. There is a check for tty being NULL, but it is
dereferenced earlier.
Actually, tty cannot be NULL in .write and .put_char, so remove
the tests.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/char/synclink.c')
| -rw-r--r-- | drivers/char/synclink.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/char/synclink.c b/drivers/char/synclink.c index 4846b73ef28d..0658fc548222 100644 --- a/drivers/char/synclink.c +++ b/drivers/char/synclink.c @@ -2031,7 +2031,7 @@ static int mgsl_put_char(struct tty_struct *tty, unsigned char ch) if (mgsl_paranoia_check(info, tty->name, "mgsl_put_char")) return 0; - if (!tty || !info->xmit_buf) + if (!info->xmit_buf) return 0; spin_lock_irqsave(&info->irq_spinlock, flags); @@ -2121,7 +2121,7 @@ static int mgsl_write(struct tty_struct * tty, if (mgsl_paranoia_check(info, tty->name, "mgsl_write")) goto cleanup; - if (!tty || !info->xmit_buf) + if (!info->xmit_buf) goto cleanup; if ( info->params.mode == MGSL_MODE_HDLC || |