linux-kernel - [patch 2/2] ALSA: oxfw: fix detect_loud

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Date:	Fri, 12 Dec 2014 22:28:10 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	Clemens Ladisch <clemens@...isch.de>
Cc:	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Takashi Sakamoto <o-takashi@...amocchi.jp>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: [patch 2/2] ALSA: oxfw: fix detect_loud_models() return value

This code causes a static checker warning:

	sound/firewire/oxfw/oxfw.c:46 detect_loud_models()
	warn: signedness bug returning '(-2)'

The detect_loud_models() function should return false on falure, so that
we don't try to set up the loud code for hardware that doesn't support
it.

Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>

diff --git a/sound/firewire/oxfw/oxfw.c b/sound/firewire/oxfw/oxfw.c
index cf1d0b5..60e5cad 100644
--- a/sound/firewire/oxfw/oxfw.c
+++ b/sound/firewire/oxfw/oxfw.c
@@ -43,7 +43,7 @@ static bool detect_loud_models(struct fw_unit *unit)
 	err = fw_csr_string(unit->directory, CSR_MODEL,
 			    model, sizeof(model));
 	if (err < 0)
-		return err;
+		return false;
 
 	for (i = 0; i < ARRAY_SIZE(models); i++) {
 		if (strcmp(models[i], model) == 0)
--
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