[PATCH] serial: mpc52xx_uart: fix null pointer dereference
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From: Anatolij Gustschin on 4 May 2010 18:20 Commit 6acc6833510db8f72b5ef343296d97480555fda9 introduced NULL pointer dereference and kernel crash on ppc32 machines while booting. Fix this bug now. Reported-by: Leonardo Chiquitto <leonardo.lists(a)gmail.com> Signed-off-by: Anatolij Gustschin <agust(a)denx.de> --- drivers/serial/mpc52xx_uart.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c index a176ab4..02469c3 100644 --- a/drivers/serial/mpc52xx_uart.c +++ b/drivers/serial/mpc52xx_uart.c @@ -1467,7 +1467,7 @@ mpc52xx_uart_init(void) /* * Map the PSC FIFO Controller and init if on MPC512x. */ - if (psc_ops->fifoc_init) { + if (psc_ops && psc_ops->fifoc_init) { ret = psc_ops->fifoc_init(); if (ret) return ret; -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |