Vedashree Vidwans c220f9f46f tegra: hwpm: return error from read/write function ...

Currently, read/write functions validate aperture and mmio address
pointers. However, the error cannot be returned to the parent resulting
into undetected errors.
Modify all read write functions to return error on failure. This will
also allow HWPM driver to know about unavailable IP perfmuxes.

Jira THWPM-41

Change-Id: I6cc4ba7a831d5058657d4f2536b1ce3ab20b30c6
Signed-off-by: Vedashree Vidwans <vvidwans@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2707446
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: svc-mobile-cert <svc-mobile-cert@nvidia.com>
Reviewed-by: svc_kernel_abi <svc_kernel_abi@nvidia.com>
Reviewed-by: Vasuki Shankar <vasukis@nvidia.com>
Reviewed-by: Seema Khowala <seemaj@nvidia.com>
GVS: Gerrit_Virtual_Submit

2022-05-17 08:43:13 -07:00

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