diff options
| author | Lee Jones <[email protected]> | 2013-05-09 13:50:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2013-05-20 11:54:55 -0700 |
| commit | f6b6f52b583003ad443d5709c56b8858466c4268 (patch) | |
| tree | 99097803171b86bfdb778d8616cd3fe8f2a1b3f5 | |
| parent | 383d2fc96c1983f5cd7fca3a3b1c9b8d8ee0de66 (diff) | |
serial: pl011: protect attribute read from NULL platform data struct
It's completely feasible that platform data will be empty i.e. when
booting with Device Tree with no device AUXDATA. So we must protect
it's use in these use-cases, or risk a kernel Oops.
Cc: Russell King <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Signed-off-by: Lee Jones <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 8ab70a620919..e2774f9ecd59 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -332,7 +332,7 @@ static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port * dmaengine_slave_config(chan, &rx_conf); uap->dmarx.chan = chan; - if (plat->dma_rx_poll_enable) { + if (plat && plat->dma_rx_poll_enable) { /* Set poll rate if specified. */ if (plat->dma_rx_poll_rate) { uap->dmarx.auto_poll_rate = false; |