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mailbox: bcm2835: Fix of_xlate return value 

The bcm2835-mailbox returns NULL instead of an error pointer, which could
result in a NULL ptr dereference in mbox_request_channel. So fix this
by returning a proper error pointer.

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Fixes: 0bae6af6d7 ("mailbox: Enable BCM2835 mailbox support")
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Stefan Wahren 2018-05-26 12:24:00 +02:00 committed by Jassi Brar
parent 61a2f6db77
commit 00ee3a13a9
1 changed files with 1 additions and 1 deletions
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2
drivers/mailbox/bcm2835-mailbox.c
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@ -134,7 +134,7 @@ static struct mbox_chan *bcm2835_mbox_index_xlate(struct mbox_controller *mbox,
const struct of_phandle_args *sp) const struct of_phandle_args *sp)
{ {
if (sp->args_count != 0) if (sp->args_count != 0)
return NULL; return ERR_PTR(-EINVAL);
return &mbox->chans[0]; return &mbox->chans[0];
} }