thinkpad_acpi: Fix build error when CONFIG_SND_MAX_CARDS > 32
authorTakashi Iwai <tiwai@suse.de>
Thu, 24 Oct 2013 14:06:32 +0000 (16:06 +0200)
committerMatthew Garrett <matthew.garrett@nebula.com>
Wed, 20 Nov 2013 23:51:15 +0000 (18:51 -0500)
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.

Cc: <stable@vger.kernel.org> [v3.11+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
drivers/platform/x86/thinkpad_acpi.c

index a5e99d749246df18148aa799717da46d301f73fa..58b0274d24cc2968e35e6a9cdad75b1533c35e2d 100644 (file)
@@ -6438,7 +6438,12 @@ static struct ibm_struct brightness_driver_data = {
 #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;