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drivers: firmware: psci: add INVALID_ADDRESS return value

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PSCI 1.0 introduces the INVALID_ADDRESS return value for functions
that take an address as input parameter (eg CPU_SUSPEND).

This patch adds INVALID_ADDRESS return value to kernel code and
updates the PSCI to linux error conversion to take it into account.

The kernel error value associated to INVALID_ADDRESS is set to
the error returned when the PSCI error code is INVALID_PARAMETERS
to comply with current call sites expected return value, given
that the kernel at present has no use for the additional error
information reported.

Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Jisheng Zhang <jszhang@marvell.com>
This commit is contained in:
Lorenzo Pieralisi 2015-05-22 14:31:37 +01:00
parent 9ffecb1028
commit 2217d7c68e
2 changed files with 2 additions and 0 deletions
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1
drivers/firmware/psci.c
View file

@ -78,6 +78,7 @@ static int psci_to_linux_errno(int errno)
case PSCI_RET_NOT_SUPPORTED:
return -EOPNOTSUPP;
case PSCI_RET_INVALID_PARAMS:
case PSCI_RET_INVALID_ADDRESS:
return -EINVAL;
case PSCI_RET_DENIED:
return -EPERM;

1
include/uapi/linux/psci.h
View file

@ -86,5 +86,6 @@
#define PSCI_RET_INTERNAL_FAILURE -6
#define PSCI_RET_NOT_PRESENT -7
#define PSCI_RET_DISABLED -8
#define PSCI_RET_INVALID_ADDRESS -9
#endif /* _UAPI_LINUX_PSCI_H */