spi: spi-geni-qcom: Check for error IRQs

>From reading the #defines it seems like we should shout if we ever see
one of these error bits.  Let's do so.  This doesn't do anything
functional except print a yell in the log if the error bits are seen.

Signed-off-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20200618080459.v4.3.Id8bebdbdb4d2ed9468634343a7e6207d6cffff8a@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 7d022cc..11f36d2 100644 (file)
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -506,6 +506,11 @@ static irqreturn_t geni_spi_isr(int irq, void *data)
        if (!m_irq)
                return IRQ_NONE;
 
+       if (m_irq & (M_CMD_OVERRUN_EN | M_ILLEGAL_CMD_EN | M_CMD_FAILURE_EN |
+                    M_RX_FIFO_RD_ERR_EN | M_RX_FIFO_WR_ERR_EN |
+                    M_TX_FIFO_RD_ERR_EN | M_TX_FIFO_WR_ERR_EN))
+               dev_warn(mas->dev, "Unexpected IRQ err status %#010x\n", m_irq);
+
        spin_lock(&mas->lock);
 
        if ((m_irq & M_RX_FIFO_WATERMARK_EN) || (m_irq & M_RX_FIFO_LAST_EN))