On Wed, May 5, 2010 at 12:18 AM, Anatolij Gustschin <ag...@denx.de> wrote:
> Commit 6acc6833510db8f72b5ef343296d97480555fda9
> introduced NULL pointer dereference and kernel crash
> on ppc32 machines while booting. Fix this bug now.
>
> Reported-by: Leonardo Chiquitto <leonardo.li...@gmail.com>
> Signed-off-by: Anatolij Gustschin <ag...@denx.de>
Thanks for being so quick to pick up on this Anatolij. I've been
traveling and not able to respond to stuff. I see that Greg has
already picked this up (thanks Greg!), but FWIW:
Acked-by: Grant Likely <grant.lik...@secretlab.ca>
Actually, now that I look, this fix needs to go into Linus' tree right
away (not just linux-next) since the offending patch went in during
the 2.6.34 merge window.
Greg, I can either pick this up and push it out to Linus tomorrow, or
let you do it. Whichever you prefer. Let me know so I don't cause
conflicts in your tree.
On another note, this patch isn't actually the right fix, but that's
because this driver is such a horribly bad example of handling private
data that doing the right thing requires some re-architecting. The
driver should not need any of that extra code in the module_init hook.
For now this is the best thing to do, but I'll dig into it tomorrow
and see if I can churn out a patch to fix it properly for the 2.6.35
merge window.
Cheers and thanks,
g.
> ---
> 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
>
>
--
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.
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