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| author |   Rashika Kheria <rashika.kheria@gmail.com> | 2013-10-20 18:29:55 +0530 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-10-25 06:34:21 +0100 |
| commit | 7c64884b19f3dc864208df30c0a9c24175dac26a (patch) | |
| tree | 7a283fbe2cbf28fcefd44bd752f25302f4185d42 /drivers/staging/sb105x | |
| parent | staging: ashmem: Fix ASHMEM_PURGE_ALL_CACHES return value (diff) | |
| download | linux-dev-7c64884b19f3dc864208df30c0a9c24175dac26a.tar.xz linux-dev-7c64884b19f3dc864208df30c0a9c24175dac26a.zip | |
Staging: sb105x: Fix a possible null dereference
This patch fixes the following error in sb_pc_mp.c-
drivers/staging/sb105x/sb_pci_mp.c:546 mp_startup() error: we previously assumed 'info->tty' could be null (see line 525)
Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/sb105x')
| -rw-r--r-- | drivers/staging/sb105x/sb_pci_mp.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/staging/sb105x/sb_pci_mp.c b/drivers/staging/sb105x/sb_pci_mp.c index adb6bea728b2..bc53b4ef1e61 100644 --- a/drivers/staging/sb105x/sb_pci_mp.c +++ b/drivers/staging/sb105x/sb_pci_mp.c @@ -543,14 +543,14 @@ static int mp_startup(struct sb_uart_state *state, int init_hw) if (init_hw) { mp_change_speed(state, NULL); - if (info->tty->termios.c_cflag & CBAUD) + if (info->tty && (info->tty->termios.c_cflag & CBAUD)) uart_set_mctrl(port, TIOCM_RTS | TIOCM_DTR); } info->flags |= UIF_INITIALIZED; - - clear_bit(TTY_IO_ERROR, &info->tty->flags); + if (info->tty) + clear_bit(TTY_IO_ERROR, &info->tty->flags); } if (retval && capable(CAP_SYS_ADMIN)) |