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authorAnatolij Gustschin <agust@denx.de>2010-05-05 00:18:59 +0200
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-13 12:10:55 -0700
commite6114fa1d1d6a588766f28081b971047dd3e5def (patch)
tree58abc158d7f3ad52e5071b77c34be6d752848319
parentcea0d767c29669bf89f86e4aee46ef462d2ebae8 (diff)
serial: mpc52xx_uart: fix null pointer dereference
Commit 6acc6833510db8f72b5ef343296d97480555fda9 introduced NULL pointer dereference and kernel crash on ppc32 machines while booting. Fix this bug now. Reported-by: Leonardo Chiquitto <leonardo.lists@gmail.com> Tested-by: Leonardo Chiquitto <leonardo.lists@gmail.com> Signed-off-by: Anatolij Gustschin <agust@denx.de> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/serial/mpc52xx_uart.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/serial/mpc52xx_uart.c b/drivers/serial/mpc52xx_uart.c
index a176ab4bd65b..02469c31bf0b 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;