linux-kernel - [PATCH v2 1/2] spi: qcom: geni: set the error code for gpi transfer

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Date:   Mon,  3 Jan 2022 12:41:17 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mark Brown <broonie@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, Vinod Koul <vkoul@...nel.org>,
        Douglas Anderson <dianders@...omium.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] spi: qcom: geni: set the error code for gpi transfer

Before we invoke spi_finalize_current_transfer() in
spi_gsi_callback_result() we should set the spi->cur_msg->status as
appropriate (0 for success, error otherwise).

The helps to return error on transfer and not wait till it timesout on
error

Fixes: b59c122484ec ("spi: spi-geni-qcom: Add support for GPI dma")
Signed-off-by: Vinod Koul <vkoul@...nel.org>
---

Changes in v2:
 - add missing spi_finalize_current_transfer() for dma error case

 drivers/spi/spi-geni-qcom.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 413fa1a7a936..b82f3ddff0f4 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -346,17 +346,21 @@ spi_gsi_callback_result(void *cb, const struct dmaengine_result *result)
 {
 	struct spi_master *spi = cb;
 
+	spi->cur_msg->status = -EIO;
 	if (result->result != DMA_TRANS_NOERROR) {
 		dev_err(&spi->dev, "DMA txn failed: %d\n", result->result);
+		spi_finalize_current_transfer(spi);
 		return;
 	}
 
 	if (!result->residue) {
+		spi->cur_msg->status = 0;
 		dev_dbg(&spi->dev, "DMA txn completed\n");
-		spi_finalize_current_transfer(spi);
 	} else {
 		dev_err(&spi->dev, "DMA xfer has pending: %d\n", result->residue);
 	}
+
+	spi_finalize_current_transfer(spi);
 }
 
 static int setup_gsi_xfer(struct spi_transfer *xfer, struct spi_geni_master *mas,
-- 
2.31.1