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| author | Marc Zyngier <marc.zyngier@arm.com> | 2018-05-29 14:11:05 +0200 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2018-05-31 18:30:44 +0200 |
| commit | eff0e9e1078ea7dc1d794dc50e31baef984c46d7 (patch) | |
| tree | cd8c296d0403fefd8a28f6d0d74f0d52c136a97a | |
| parent | arm64: Unify kernel fault reporting (diff) | |
| download | linux-eff0e9e1078ea7dc1d794dc50e31baef984c46d7.tar.xz linux-eff0e9e1078ea7dc1d794dc50e31baef984c46d7.zip | |
arm/arm64: smccc: Add SMCCC-specific return codes
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>
| -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 a031897fca76..c89da86de99f 100644 --- a/include/linux/arm-smccc.h +++ b/include/linux/arm-smccc.h @@ -291,5 +291,10 @@ 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*/ |