linux-kernel - [PATCH v2 4/4] spi: spi-geni-qcom: Print an error when we timeout setting the CS

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Message-Id: <20201216144114.v2.4.I666b37646de9652cef438ac7c2c6c2053367fc6b@changeid>
Date:   Wed, 16 Dec 2020 14:41:52 -0800
From:   Douglas Anderson <dianders@...omium.org>
To:     Mark Brown <broonie@...nel.org>
Cc:     msavaliy@....qualcomm.com, akashast@...eaurora.org,
        Stephen Boyd <swboyd@...omium.org>,
        Roja Rani Yarubandi <rojay@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-spi@...r.kernel.org
Subject: [PATCH v2 4/4] spi: spi-geni-qcom: Print an error when we timeout setting the CS

If we're using geni to manage the chip select line (don't do it--use a
GPIO!) and we happen to get a timeout waiting for the chip select
command to be completed, no errors are printed even though things
might not be in the best shape.  Let's add a print.

Signed-off-by: Douglas Anderson <dianders@...omium.org>
---

Changes in v2:
- ("spi: spi-geni-qcom: Print an error when we timeout setting the CS") new for v2

 drivers/spi/spi-geni-qcom.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-geni-qcom.c b/drivers/spi/spi-geni-qcom.c
index 0e4fa52ac017..744009875762 100644
--- a/drivers/spi/spi-geni-qcom.c
+++ b/drivers/spi/spi-geni-qcom.c
@@ -220,8 +220,10 @@ static void spi_geni_set_cs(struct spi_device *slv, bool set_flag)
 	spin_unlock_irq(&mas->lock);
 
 	time_left = wait_for_completion_timeout(&mas->cs_done, HZ);
-	if (!time_left)
+	if (!time_left) {
+		dev_warn(mas->dev, "Timeout setting chip select\n");
 		handle_fifo_timeout(spi, NULL);
+	}
 
 exit:
 	pm_runtime_put(mas->dev);
-- 
2.29.2.684.gfbc64c5ab5-goog