From: Matt Fleming <matt@...>

commit 806b0351c9ff9890c1ef0ba2c46237baef49ac79 upstream.

Move efi_status_to_err() to the architecture independent code as it's
generally useful in all bits of EFI code where there is a need to
convert an efi_status_t to a kernel error value.

Signed-off-by: Matt Fleming <matt@...>
Acked-by: Ard Biesheuvel <ard.biesheuvel@...>
Cc: Borislav Petkov <bp@...>
Cc: Kweh Hock Leong <hock.leong.kweh@...>
Cc: Peter Zijlstra <peterz@...>
Cc: Thomas Gleixner <tglx@...>
Cc: joeyli <jlee@...>
Cc: linux-efi@...
Link: http://lkml.kernel.org/r/1461614832-17633-27-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@...>
---
drivers/firmware/efi/efi.c | 33 +++++++++++++++++++++++++++++++++
drivers/firmware/efi/vars.c | 33 ---------------------------------
include/linux/efi.h | 2 ++
3 files changed, 35 insertions(+), 33 deletions(-)

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 3b52677f459a..33d60992a580 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -663,3 +663,36 @@ u64 __weak efi_mem_attributes(unsigned long phys_addr)
}
return 0;
}
+
+int efi_status_to_err(efi_status_t status)
+{
+ int err;
+
+ switch (status) {
+ case EFI_SUCCESS:
+ err = 0;
+ break;
+ case EFI_INVALID_PARAMETER:
+ err = -EINVAL;
+ break;
+ case EFI_OUT_OF_RESOURCES:
+ err = -ENOSPC;
+ break;
+ case EFI_DEVICE_ERROR:
+ err = -EIO;
+ break;
+ case EFI_WRITE_PROTECTED:
+ err = -EROFS;
+ break;
+ case EFI_SECURITY_VIOLATION:
+ err = -EACCES;
+ break;
+ case EFI_NOT_FOUND:
+ err = -ENOENT;
+ break;
+ default:
+ err = -EINVAL;
+ }
+
+ return err;
+}
diff --git a/drivers/firmware/efi/vars.c b/drivers/firmware/efi/vars.c
index 6f182fd91a6d..38e36526ba02 100644
--- a/drivers/firmware/efi/vars.c
+++ b/drivers/firmware/efi/vars.c
@@ -318,39 +318,6 @@ check_var_size(u32 attributes, unsigned long size)
return fops->query_variable_store(attributes, size);
}

-static int efi_status_to_err(efi_status_t status)
-{
- int err;
-
- switch (status) {
- case EFI_SUCCESS:
- err = 0;
- break;
- case EFI_INVALID_PARAMETER:
- err = -EINVAL;
- break;
- case EFI_OUT_OF_RESOURCES:
- err = -ENOSPC;
- break;
- case EFI_DEVICE_ERROR:
- err = -EIO;
- break;
- case EFI_WRITE_PROTECTED:
- err = -EROFS;
- break;
- case EFI_SECURITY_VIOLATION:
- err = -EACCES;
- break;
- case EFI_NOT_FOUND:
- err = -ENOENT;
- break;
- default:
- err = -EINVAL;
- }
-
- return err;
-}
-
static bool variable_is_present(efi_char16_t *variable_name, efi_guid_t *vendor,
struct list_head *head)
{
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 47be3ad7d3e5..774e9a0d49f1 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -999,6 +999,8 @@ static inline void
efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
#endif

+extern int efi_status_to_err(efi_status_t status);
+
/*
* Variable Attributes
*/
--
2.12.3