tree 78537f07332c253c74385ae0da26e6af70d6e458
parent eeb77da64684424ef275330e3e15d8350ecc1b07
author Andre Przywara <andre.przywara@arm.com> 1602065382 +0100
committer Andre Przywara <andre.przywara@arm.com> 1602065628 +0100

fdt: Fix coverity complaint about 32-bit multiplication

Coverity raised an eyebrow over our GICR frame size calculation:
========
    CID 362942:  Integer handling issues  (OVERFLOW_BEFORE_WIDEN)
Potentially overflowing expression "nr_cores * gicr_frame_size" with type
"unsigned int" (32 bits, unsigned) is evaluated using 32-bit arithmetic,
and then used in a context that expects an expression of type "uint64_t"
(64 bits, unsigned).
========

Even with a GICv4 (256KB frame size) we need 16384 cores to overflow
32-bit, so it's not a practical issue.

But it's also easy to fix, so let's just do that: cast gicr_frame_size
to an unsigned 64-bit integer, so that the multiplication is done in the
64-bit realm.

Change-Id: Iad10e19b9e58d5fbf9d13205fbcef0aac5ae48af
Signed-off-by: Andre Przywara <andre.przywara@arm.com>