[tip:efi/core] efi/pstore: Return error code (if any) from efi_pstore_write()

[tip-bot for Evgeny Kalugin]

Commit-ID:  fee929ba1c9386e524ed3abcc6d5f9b64381f959
Gitweb:     http://git.kernel.org/tip/fee929ba1c9386e524ed3abcc6d5f9b64381f959
Author:     Evgeny Kalugin <evgeny.kalugin@xxxxxxxxx>
AuthorDate: Tue, 4 Apr 2017 17:02:42 +0100
Committer:  Ingo Molnar <mingo@xxxxxxxxxx>
CommitDate: Wed, 5 Apr 2017 12:27:25 +0200

efi/pstore: Return error code (if any) from efi_pstore_write()

For some reason return value from actual variable setting was ignored.
With this change error code get transferred upwards through call stack.

Signed-off-by: Evgeny Kalugin <evgeny.kalugin@xxxxxxxxx>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Matt Fleming <matt@xxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: linux-efi@xxxxxxxxxxxxxxx
Link: http://lkml.kernel.org/r/20170404160245.27812-9-ard.biesheuvel@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 drivers/firmware/efi/efi-pstore.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/firmware/efi/efi-pstore.c b/drivers/firmware/efi/efi-pstore.c
index f402ba2..6b5acef 100644
--- a/drivers/firmware/efi/efi-pstore.c
+++ b/drivers/firmware/efi/efi-pstore.c
@@ -274,9 +274,9 @@ static int efi_pstore_write(enum pstore_type_id type,
 	for (i = 0; i < DUMP_NAME_LEN; i++)
 		efi_name[i] = name[i];
 
-	efivar_entry_set_safe(efi_name, vendor, PSTORE_EFI_ATTRIBUTES,
-			      !pstore_cannot_block_path(reason),
-			      size, psi->buf);
+	ret = efivar_entry_set_safe(efi_name, vendor, PSTORE_EFI_ATTRIBUTES,
+				    !pstore_cannot_block_path(reason),
+				    size, psi->buf);
 
 	if (reason == KMSG_DUMP_OOPS)
 		efivar_run_worker();