ASoC: rt5514: Add the sanity checks of the buffer related address
The patch add the sanity checks of the buffer related address to make sure
the addresses are valid.
Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c
index 950d1ff..6f513cc 100644
--- a/sound/soc/codecs/rt5514-spi.c
+++ b/sound/soc/codecs/rt5514-spi.c
@@ -173,9 +173,14 @@
rt5514_dsp->buf_rp = buf[0] | buf[1] << 8 | buf[2] << 16 |
buf[3] << 24;
+ if (rt5514_dsp->buf_rp % 8)
+ rt5514_dsp->buf_rp = (rt5514_dsp->buf_rp / 8) * 8;
+
rt5514_dsp->buf_size = rt5514_dsp->buf_limit - rt5514_dsp->buf_base;
- schedule_delayed_work(&rt5514_dsp->copy_work, 0);
+ if (rt5514_dsp->buf_base && rt5514_dsp->buf_limit &&
+ rt5514_dsp->buf_rp && rt5514_dsp->buf_size)
+ schedule_delayed_work(&rt5514_dsp->copy_work, 0);
return IRQ_HANDLED;
}