Some of the RISC-V drivers (such as RISC-V PMU and ACPI CPPC) need to
access CSR based on CSR number discovered from somewhere. Add common
RISC-V csr_read_num() and csr_write_num() functions under arch/riscv
for such drivers.

These patches can be found in the riscv_csr_read_num_v1 branch at:
https://github.com/avpatel/linux.git

Anup Patel (2):
  ACPI: RISC-V: Fix FFH_CPPC_CSR error handling
  RISC-V: Add common csr_read_num() and csr_write_num() functions

 arch/riscv/include/asm/csr.h |   3 +
 arch/riscv/kernel/Makefile   |   1 +
 arch/riscv/kernel/csr.c      | 177 +++++++++++++++++++++++++++++++++++
 drivers/acpi/riscv/cppc.c    |  21 ++---
 drivers/perf/riscv_pmu.c     |  43 +--------
 5 files changed, 191 insertions(+), 54 deletions(-)
 create mode 100644 arch/riscv/kernel/csr.c

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2.43.0