From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean-Francois Moine Subject: [PATCH] ASoC: kirkwood: fix loss of external clock at probe time Date: Thu, 19 Sep 2013 11:49:57 +0200 Message-ID: <20130919114957.1fede091@armhf> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Liam Girdwood , Mark Brown Cc: Jaroslav Kysela , Takashi Iwai , Grant Likely , Rob Herring , alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org At probe time, when the clock driver is not yet initialized, the external clock of the kirkwood sound device will not be usable. This patch fixes this problem defering the device probe. Signed-off-by: Jean-Francois Moine --- sound/soc/kirkwood/kirkwood-i2s.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/sound/soc/kirkwood/kirkwood-i2s.c b/sound/soc/kirkwood/kir= kwood-i2s.c index 0f3d73d..14f32d9 100644 --- a/sound/soc/kirkwood/kirkwood-i2s.c +++ b/sound/soc/kirkwood/kirkwood-i2s.c @@ -496,7 +496,10 @@ static int kirkwood_i2s_dev_probe(struct platform_= device *pdev) return err; =20 priv->extclk =3D devm_clk_get(&pdev->dev, "extclk"); - if (!IS_ERR(priv->extclk)) { + if (IS_ERR(priv->extclk)) { + if (np && of_property_match_string(np, "clock-names", "extclk") >=3D= 0) + return -EPROBE_DEFER; + } else { if (priv->extclk =3D=3D priv->clk) { devm_clk_put(&pdev->dev, priv->extclk); priv->extclk =3D ERR_PTR(-EINVAL); --=20 Ken ar c'henta=C3=B1 | ** Breizh ha Linux atav! ** Jef | http://moinejf.free.fr/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" i= n the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html