From mboxrd@z Thu Jan 1 00:00:00 1970 From: lorenzo.pieralisi@arm.com (Lorenzo Pieralisi) Date: Wed, 8 Jul 2015 18:16:47 +0100 Subject: [PATCH v2 1/5] drivers: firmware: psci: add INVALID_ADDRESS return value In-Reply-To: <1436375811-10529-1-git-send-email-lorenzo.pieralisi@arm.com> References: <1436375811-10529-1-git-send-email-lorenzo.pieralisi@arm.com> Message-ID: <1436375811-10529-2-git-send-email-lorenzo.pieralisi@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 Acked-by: Sudeep Holla Acked-by: Mark Rutland --- drivers/firmware/psci.c | 1 + include/uapi/linux/psci.h | 1 + 2 files changed, 2 insertions(+) diff --git a/drivers/firmware/psci.c b/drivers/firmware/psci.c index 81b70da..62d9bc1 100644 --- a/drivers/firmware/psci.c +++ b/drivers/firmware/psci.c @@ -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; diff --git a/include/uapi/linux/psci.h b/include/uapi/linux/psci.h index 310d83e..64469e6 100644 --- a/include/uapi/linux/psci.h +++ b/include/uapi/linux/psci.h @@ -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 */ -- 2.2.1