linux-kernel - [tip:efi/core] efi: Reorder pr_notice() with add_device

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Date:   Fri, 9 Mar 2018 01:13:49 -0800
From:   tip-bot for Ard Biesheuvel <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     torvalds@...ux-foundation.org, hpa@...or.com, mingo@...nel.org,
        tglx@...utronix.de, peterz@...radead.org,
        ard.biesheuvel@...aro.org, linux-kernel@...r.kernel.org,
        matt@...eblueprint.co.uk
Subject: [tip:efi/core] efi: Reorder pr_notice() with
 add_device_randomness() call

Commit-ID:  5b4e4c3aa220d07d166d3f21f158bc9c69e3c044
Gitweb:     https://git.kernel.org/tip/5b4e4c3aa220d07d166d3f21f158bc9c69e3c044
Author:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
AuthorDate: Thu, 8 Mar 2018 08:00:18 +0000
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 9 Mar 2018 08:58:23 +0100

efi: Reorder pr_notice() with add_device_randomness() call

Currently, when we receive a random seed from the EFI stub, we call
add_device_randomness() to incorporate it into the entropy pool, and
issue a pr_notice() saying we are about to do that, e.g.,

  [    0.000000] efi:  RNG=0x87ff92cf18
  [    0.000000] random: fast init done
  [    0.000000] efi: seeding entropy pool

Let's reorder those calls to make the output look less confusing:

  [    0.000000] efi: seeding entropy pool
  [    0.000000] efi:  RNG=0x87ff92cf18
  [    0.000000] random: fast init done

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Matt Fleming <matt@...eblueprint.co.uk>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-efi@...r.kernel.org
Link: http://lkml.kernel.org/r/20180308080020.22828-11-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 drivers/firmware/efi/efi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index cd42f66a7c85..92b9e79e5da9 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -542,9 +542,9 @@ int __init efi_config_parse_tables(void *config_tables, int count, int sz,
 			seed = early_memremap(efi.rng_seed,
 					      sizeof(*seed) + size);
 			if (seed != NULL) {
+				pr_notice("seeding entropy pool\n");
 				add_device_randomness(seed->bits, seed->size);
 				early_memunmap(seed, sizeof(*seed) + size);
-				pr_notice("seeding entropy pool\n");
 			} else {
 				pr_err("Could not map UEFI random seed!\n");
 			}