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ACPI: RISC-V: Fix FFH_CPPC_CSR error handling

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commit 5b3706597b upstream.

The cppc_ffh_csr_read() and cppc_ffh_csr_write() returns Linux error
code in "data->ret.error" so cpc_read_ffh() and cpc_write_ffh() must
not use sbi_err_map_linux_errno() for FFH_CPPC_CSR.

Fixes: 30f3ffbee8 ("ACPI: RISC-V: Add CPPC driver")
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Reviewed-by: Troy Mitchell <troy.mitchell@linux.dev>
Reviewed-by: Sunil V L <sunilvl@ventanamicro.com>
Reviewed-by: Nutty Liu <nutty.liu@hotmail.com>
Reviewed-by: Atish Patra <atishp@rivosinc.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20250818143600.894385-2-apatel@ventanamicro.com
Signed-off-by: Paul Walmsley <pjw@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anup Patel 2025-08-18 20:05:59 +05:30 committed by Greg Kroah-Hartman
parent 4d9378e846
commit 25acf99edb
1 changed files with 2 additions and 2 deletions
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4
drivers/acpi/riscv/cppc.c
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@ -119,7 +119,7 @@ int cpc_read_ffh(int cpu, struct cpc_reg *reg, u64 *val)
*val = data.ret.value;
return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
return data.ret.error;
}
return -EINVAL;
@ -148,7 +148,7 @@ int cpc_write_ffh(int cpu, struct cpc_reg *reg, u64 val)
smp_call_function_single(cpu, cppc_ffh_csr_write, &data, 1);
return (data.ret.error) ? sbi_err_map_linux_errno(data.ret.error) : 0;
return data.ret.error;
}
return -EINVAL;