From: Matt Fleming
Git-commit: 1fa7e6958c5f82cc75c594e3ffaf73cc26fc94c1
Patch-mainline: v3.8
References: bnc#808680
Target: openSUSE 12.3
Files are created in efivarfs_create() before a corresponding variable
is created in the firmware. This leads to users being able to
read/write to the file without the variable existing in the
firmware. Reading a non-existent variable currently returns -ENOENT,
which is confusing because the file obviously *does* exist.
Convert EFI_NOT_FOUND into -EIO which is the closest thing to "error
while interacting with firmware", and should hopefully indicate to the
caller that the variable is in some uninitialised state.
Cc: Josh Boyer
Acked-by: Jeremy Kerr
Cc: Lee, Chun-Yi
Cc: Andy Whitcroft
Reported-by: Lingzhu Xiang
Signed-off-by: Matt Fleming
Acked-by: Lee, Chun-Yi
---
drivers/firmware/efivars.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/firmware/efivars.c b/drivers/firmware/efivars.c
index fa9fa03..807dad4 100644
--- a/drivers/firmware/efivars.c
+++ b/drivers/firmware/efivars.c
@@ -674,7 +674,7 @@ static int efi_status_to_err(efi_status_t status)
err = -EACCES;
break;
case EFI_NOT_FOUND:
- err = -ENOENT;
+ err = -EIO;
break;
default:
err = -EINVAL;
--
1.6.4.2
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