linux/debian/patches/bugfix/arm/imx-sgtl5000-probe-defer.patch

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From: Arnaud Patard <arnaud.patard@rtp-net.org>
Subject: imx-sgtl5000: return E_PROBE_DEFER if ssi/codec not found
Forwarded: http://thread.gmane.org/gmane.linux.alsa.devel/109469
If the ssi or codec drivers are not loaded (for instance, because spi or i2c
bus drivers are not loaded), returning -EINVAL will for people to unload and
then reload the module to get sound working. Returning E_PROBE_DEFER will
mitigate this.
[ not sure if upstream will like that ]
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Index: linux/sound/soc/fsl/imx-sgtl5000.c
===================================================================
--- linux.orig/sound/soc/fsl/imx-sgtl5000.c 2013-05-16 09:33:01.000000000 +0200
+++ linux/sound/soc/fsl/imx-sgtl5000.c 2013-05-16 09:35:14.000000000 +0200
@@ -113,13 +113,13 @@ static int imx_sgtl5000_probe(struct pla
ssi_pdev = of_find_device_by_node(ssi_np);
if (!ssi_pdev) {
dev_err(&pdev->dev, "failed to find SSI platform device\n");
- ret = -EINVAL;
+ ret = -EPROBE_DEFER;
goto fail;
}
codec_dev = of_find_i2c_device_by_node(codec_np);
if (!codec_dev) {
dev_err(&pdev->dev, "failed to find codec platform device\n");
- return -EINVAL;
+ return -EPROBE_DEFER;
}
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);