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| author | Marc Zyngier <marc.zyngier@arm.com> | 2019-11-08 13:35:18 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-11-10 11:21:21 +0100 |
| commit | 0d4e2980b38b86ebfb864b402bce290d7575ba64 (patch) | |
| tree | da7891543f995cfd102543e6bffd2ebc8bc1174f | |
| parent | deb97e65fa574ff8d5ed6b36a267c205c1bce618 (diff) | |
| download | linux-rt-0d4e2980b38b86ebfb864b402bce290d7575ba64.tar.gz | |
arm/arm64: smccc: Add SMCCC-specific return codes
commit eff0e9e1078ea7dc1d794dc50e31baef984c46d7 upstream.
We've so far used the PSCI return codes for SMCCC because they
were extremely similar. But with the new ARM DEN 0070A specification,
"NOT_REQUIRED" (-2) is clashing with PSCI's "PSCI_RET_INVALID_PARAMS".
Let's bite the bullet and add SMCCC specific return codes. Users
can be repainted as and when required.
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/arm-smccc.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/arm-smccc.h b/include/linux/arm-smccc.h index eb79d0e21148..a4eec441f82d 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -264,5 +264,10 @@ asmlinkage void arm_smccc_hvc(unsigned long a0, unsigned long a1, */ #define arm_smccc_1_1_hvc(...) __arm_smccc_1_1(SMCCC_HVC_INST, __VA_ARGS__) +/* Return codes defined in ARM DEN 0070A */ +#define SMCCC_RET_SUCCESS 0 +#define SMCCC_RET_NOT_SUPPORTED -1 +#define SMCCC_RET_NOT_REQUIRED -2 + #endif /*__ASSEMBLY__*/ #endif /*__LINUX_ARM_SMCCC_H*/ |