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>

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))