mailbox: pcc: fix channel calculation in get_pcc_channel()

This patch fixes the calculation of pcc_chan for non-zero id.
After the compiler ignores the (unsigned long) cast the
pcc_mbox_channels pointer is type-cast and then the type-cast
offset is added which results in address outside of the range
leading to the kernel crashing.

We might add braces and make it:

pcc_chan = (struct mbox_chan *)
		((unsigned long) pcc_mbox_channels +
		(id * sizeof(*pcc_chan)));

but let's go with array approach here and use id as index.

Tested on Juno board.

Signed-off-by: Alexey Klimov <[email protected]>
Acked-by: Sudeep Holla <[email protected]>
Acked-by: Ashwin Chaugule <[email protected]>
Signed-off-by: Jassi Brar <[email protected]>

0 files changed, 0 insertions, 0 deletions