Unverified Commit 346cccf8 authored Nov 20, 2017 by oder_chiou@realtek.com Committed by Mark Brown Nov 27, 2017

ASoC: rt5514: Add the sanity check for the driver_data in the resume function



If the rt5514 spi driver is loaded, but the snd_soc_platform_driver is not
loaded by the correct DAI settings, the NULL pointer will be gotten by
snd_soc_platform_get_drvdata in the resume function.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 254beff9

sound/soc/codecs/rt5514-spi.c

+7 −4

Original line number	Diff line number	Diff line
		@@ -482,11 +482,14 @@ static int __maybe_unused rt5514_resume(struct device *dev)
		if (device_may_wakeup(dev))
		disable_irq_wake(irq);

		if (rt5514_dsp) {
		if (rt5514_dsp->substream) {
		rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf));
		rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf,
		sizeof(buf));
		if (buf[0] & RT5514_IRQ_STATUS_BIT)
		rt5514_schedule_copy(rt5514_dsp);
		}
		}

		return 0;
		}