linux-kernel - [PATCH 3.12 017/116] thinkpad_acpi: Fix build error when CONFIG_SND_MAX

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Date:	Tue, 26 Nov 2013 16:56:30 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Takashi Iwai <tiwai@...e.de>,
	Matthew Garrett <matthew.garrett@...ula.com>
Subject: [PATCH 3.12 017/116] thinkpad_acpi: Fix build error when CONFIG_SND_MAX_CARDS > 32

3.12-stable review patch.  If anyone has any objections, please let me know.

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

From: Takashi Iwai <tiwai@...e.de>

commit cab6661344f14a09d7aecdf821a40f68ef9b18cc upstream.

SNDRV_CARDS can be specified via Kconfig since 3.11 kernel, so this
can be over 32bit integer range, which leads to a build error.

Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Matthew Garrett <matthew.garrett@...ula.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/platform/x86/thinkpad_acpi.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6420,7 +6420,12 @@ static struct ibm_struct brightness_driv
 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control"
 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME
 
-static int alsa_index = ~((1 << (SNDRV_CARDS - 3)) - 1); /* last three slots */
+#if SNDRV_CARDS <= 32
+#define DEFAULT_ALSA_IDX		~((1 << (SNDRV_CARDS - 3)) - 1)
+#else
+#define DEFAULT_ALSA_IDX		~((1 << (32 - 3)) - 1)
+#endif
+static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */
 static char *alsa_id = "ThinkPadEC";
 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1;
 


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