We only need to test for these counters being non-zero when we see the
end of a transfer. If we're doing a CS change then they will already be
zero. This implies that we don't need to set these to 0 if we're
cancelling an in flight transfer too, because we only care to test these
counters when the 'DONE' bit is set in the hardware and we've set them
to non-zero for a transfer.
This is a non-functional change, just cleanup to consolidate code.
Cc: Douglas Anderson <dianders@xxxxxxxxxxxx>
Signed-off-by: Stephen Boyd <swboyd@xxxxxxxxxxxx>
---
drivers/spi/spi-geni-qcom.c | 42 ++++++++++++++++++-------------------
1 file changed, 21 insertions(+), 21 deletions(-)
diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 670f83793aa4..828cfc988a3f 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -126,7 +126,6 @@ static void handle_fifo_timeout(struct spi_master *spi,
* came in while cancelling.
*/
mas->cur_xfer = NULL;
- mas->tx_rem_bytes = mas->rx_rem_bytes = 0;
geni_se_cancel_m_cmd(se);
spin_unlock_irq(&mas->lock);
@@ -517,29 +516,30 @@ static irqreturn_t geni_spi_isr(int irq, void *data)
if (mas->cur_xfer) {
spi_finalize_current_transfer(spi);
mas->cur_xfer = NULL;
+ /*
+ * If this happens, then a CMD_DONE came before all the
+ * Tx buffer bytes were sent out. This is unusual, log
+ * this condition and disable the WM interrupt to
+ * prevent the system from stalling due an interrupt
+ * storm.
+ *
+ * If this happens when all Rx bytes haven't been
+ * received, log the condition. The only known time
+ * this can happen is if bits_per_word != 8 and some
+ * registers that expect xfer lengths in num spi_words
+ * weren't written correctly.
+ */
+ if (mas->tx_rem_bytes) {
+ writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
+ dev_err(mas->dev, "Premature done. tx_rem = %d bpw%d\n",
+ mas->tx_rem_bytes, mas->cur_bits_per_word);
+ }
+ if (mas->rx_rem_bytes)
+ dev_err(mas->dev, "Premature done. rx_rem = %d bpw%d\n",
+ mas->rx_rem_bytes, mas->cur_bits_per_word);
} else {
complete(&mas->cs_done);
}
-
- /*
- * If this happens, then a CMD_DONE came before all the Tx
- * buffer bytes were sent out. This is unusual, log this
- * condition and disable the WM interrupt to prevent the
- * system from stalling due an interrupt storm.
- * If this happens when all Rx bytes haven't been received, log
- * the condition.
- * The only known time this can happen is if bits_per_word != 8
- * and some registers that expect xfer lengths in num spi_words
- * weren't written correctly.
- */
- if (mas->tx_rem_bytes) {
- writel(0, se->base + SE_GENI_TX_WATERMARK_REG);
- dev_err(mas->dev, "Premature done. tx_rem = %d bpw%d\n",
- mas->tx_rem_bytes, mas->cur_bits_per_word);
- }
- if (mas->rx_rem_bytes)
- dev_err(mas->dev, "Premature done. rx_rem = %d bpw%d\n",
- mas->rx_rem_bytes, mas->cur_bits_per_word);
}
if (m_irq & M_CMD_CANCEL_EN)
--
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