linux-kernel - [PATCH 3.2 123/147] platform/x86: samsung-laptop: Initialize loca variable

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Date:   Mon, 06 Nov 2017 23:03:07 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org,
        "Andy Shevchenko" <andriy.shevchenko@...ux.intel.com>,
        "Geert Uytterhoeven" <geert@...ux-m68k.org>
Subject: [PATCH 3.2 123/147] platform/x86: samsung-laptop: Initialize loca
 variable

3.2.95-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

commit 0d2c95354a3b63256e92d9fb865c08902d2c9b0b upstream.

The variable is used uninitialized which might come into unexpected
behaviour on some Samsung laptops.

Initialize it to 0xffff which seems a proper value for non-supported
feature.

Reported-by: Geert Uytterhoeven <geert@...ux-m68k.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/platform/x86/samsung-laptop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/x86/samsung-laptop.c
+++ b/drivers/platform/x86/samsung-laptop.c
@@ -601,7 +601,7 @@ static int __init samsung_init(void)
 	struct sabi_retval sretval;
 	unsigned int ifaceP;
 	int i;
-	int loca;
+	int loca = 0xffff;
 	int retval;
 
 	if (efi_enabled(EFI_BOOT))