Commit 5d14bba9 authored Oct 30, 2014 by Aaron Sierra Committed by Greg Kroah-Hartman Nov 06, 2014

serial: 8250_pci: Check mapping in pci_ni8430_init



Check the return value of ioremap_nocache to make sure we got a
valid mapping.

Signed-off-by: Aaron Sierra <asierra@xes-inc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 398a9db6

drivers/tty/serial/8250/8250_pci.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -757,6 +757,8 @@ pci_ni8430_setup(struct serial_private *priv,
		offset += idx * board->uart_offset;

		p = pci_ioremap_bar(dev, bar);
		if (!p)
		return -ENOMEM;

		/* enable the transceiver */
		writeb(readb(p + offset + NI8430_PORTCON) \| NI8430_PORTCON_TXVR_ENABLE,