From: Pierre-Louis Bossart Date: Sat, 11 Jan 2020 21:47:35 +0000 (-0600) Subject: ALSA: hda: patch_realtek: fix empty macro usage in if block X-Git-Tag: v5.15~4528^2~38 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8a71821f12a010d7100f9cc1f7b218aff0313c4a;p=platform%2Fkernel%2Flinux-starfive.git ALSA: hda: patch_realtek: fix empty macro usage in if block GCC reports the following warning with W=1 sound/pci/hda/patch_realtek.c: In function ‘alc269_suspend’: sound/pci/hda/patch_realtek.c:3616:29: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] 3616 | alc5505_dsp_suspend(codec); | ^ sound/pci/hda/patch_realtek.c: In function ‘alc269_resume’: sound/pci/hda/patch_realtek.c:3651:28: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body] 3651 | alc5505_dsp_resume(codec); | ^ This is a classic macro problem and can indeed lead to bad program flows. Fix by using the usual "do { } while (0)" pattern Signed-off-by: Pierre-Louis Bossart Link: https://lore.kernel.org/r/20200111214736.3002-2-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index 181e150..ed7982f 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -3601,8 +3601,8 @@ static void alc5505_dsp_init(struct hda_codec *codec) } #ifdef HALT_REALTEK_ALC5505 -#define alc5505_dsp_suspend(codec) /* NOP */ -#define alc5505_dsp_resume(codec) /* NOP */ +#define alc5505_dsp_suspend(codec) do { } while (0) /* NOP */ +#define alc5505_dsp_resume(codec) do { } while (0) /* NOP */ #else #define alc5505_dsp_suspend(codec) alc5505_dsp_halt(codec) #define alc5505_dsp_resume(codec) alc5505_dsp_back_from_halt(codec)