soc: hisilicon: kunpeng_hccs: Add the check for base address and size of shared memory

Browse source

If the shmem_base_addr from PCCT is zero, hccs_register_pcc_channel will
return success. And then driver will access to illegal address when send
PCC command. In addition, the size of shared memory used for communication
between driver and platform is fixed, namely 64 Bytes which is
unchangeable. So add the verification for hardening code.

Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Wei Xu <xuwei5@hisilicon.com>

...

This commit is contained in:

Huisong Li 2024-08-28 18:49:53 +08:00 • committed by Wei Xu

parent 0c811bd272

commit 3400c85f64

1 changed files with 15 additions and 9 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

24

drivers/soc/hisilicon/kunpeng_hccs.c

View file