diff options
| author |   Matt Fleming <matt.fleming@intel.com> | 2013-01-16 13:47:05 +0000 |
|---|---|---|
| committer | Matt Fleming <matt.fleming@intel.com> | 2013-01-18 09:43:44 +0000 |
| commit | 1fa7e6958c5f82cc75c594e3ffaf73cc26fc94c1 (patch) | |
| tree | dcf54e5649e6e31fef2939f21c4246b1f30585c4 /drivers/firmware/efivars.c | |
| parent | efi, x86: Pass a proper identity mapping in efi_call_phys_prelog (diff) | |
| download | linux-dev-1fa7e6958c5f82cc75c594e3ffaf73cc26fc94c1.tar.xz linux-dev-1fa7e6958c5f82cc75c594e3ffaf73cc26fc94c1.zip | |
efivarfs: Never return ENOENT from firmware
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 <jwboyer@redhat.com>
Acked-by: Jeremy Kerr <jeremy.kerr@canonical.com>
Cc: Lee, Chun-Yi <jlee@suse.com>
Cc: Andy Whitcroft <apw@canonical.com>
Reported-by: Lingzhu Xiang <lxiang@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Diffstat (limited to '')
| -rw-r--r-- | 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 fa9fa038de3f..807dad48b2b1 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; |