From: oder_chiou@realtek.com Date: Mon, 31 Jul 2017 05:47:42 +0000 (+0800) Subject: ASoC: rt5514: Add the sanity checks of the buffer related address X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=818010dac09183e99ff02e35836544b2e1d659f3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Signed-off-by: Mark Brown --- diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c index 950d1ffdc06c..6f513cc4c56c 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -173,9 +173,14 @@ static irqreturn_t rt5514_spi_irq(int irq, void *data) 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; }