The patch titled
serial: mpc52xx_uart: fix null pointer dereference
has been added to the -mm tree. Its filename is
serial-mpc52xx_uart-fix-null-pointer-dereference.patch
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------------------------------------------------------
Subject: serial: mpc52xx_uart: fix null pointer dereference
From: Anatolij Gustschin <agust@xxxxxxx>
Commit 6acc6833510db8f72b5ef343296d97480555fda9 ("serial: mpc52xx_uart:
re-enable mpc5121 PSC UART support") introduced a NULL pointer dereference
and kernel crash on ppc32 machines while booting. Fix this bug now.
Signed-off-by: Anatolij Gustschin <agust@xxxxxxx>
Reported-by: Leonardo Chiquitto <leonardo.lists@xxxxxxxxx>
Cc: John Rigby <jcrigby@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxx>
Cc: Grant Likely <grant.likely@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/serial/mpc52xx_uart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/serial/mpc52xx_uart.c~serial-mpc52xx_uart-fix-null-pointer-dereference drivers/serial/mpc52xx_uart.c
--- a/drivers/serial/mpc52xx_uart.c~serial-mpc52xx_uart-fix-null-pointer-dereference
+++ a/drivers/serial/mpc52xx_uart.c
@@ -1554,7 +1554,7 @@ 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;
_
Patches currently in -mm which might be from agust@xxxxxxx are
linux-next.patch
serial-mpc52xx_uart-fix-null-pointer-dereference.patch
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