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SubjectApplied "spi: uniphier: Add handle_err callback function" to the spi tree
The patch

spi: uniphier: Add handle_err callback function

has been applied to the spi tree at for-5.6

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

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From 11299c5cd8868479e9acfc525ba3c2e882c7ba0c Mon Sep 17 00:00:00 2001
From: Kunihiko Hayashi <>
Date: Tue, 24 Dec 2019 09:58:25 +0900
Subject: [PATCH] spi: uniphier: Add handle_err callback function

This adds master->handle_err() callback function to stop transfer due to
error. The function also resets FIFOs and disables interrupt.

Signed-off-by: Kunihiko Hayashi <>
Signed-off-by: Mark Brown <>
drivers/spi/spi-uniphier.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)

diff --git a/drivers/spi/spi-uniphier.c b/drivers/spi/spi-uniphier.c
index a44a1a5fb7b0..0b255597fdcb 100644
--- a/drivers/spi/spi-uniphier.c
+++ b/drivers/spi/spi-uniphier.c
@@ -425,6 +425,22 @@ static int uniphier_spi_unprepare_transfer_hardware(struct spi_master *master)
return 0;

+static void uniphier_spi_handle_err(struct spi_master *master,
+ struct spi_message *msg)
+ struct uniphier_spi_priv *priv = spi_master_get_devdata(master);
+ u32 val;
+ /* stop running spi transfer */
+ writel(0, priv->base + SSI_CTL);
+ /* reset FIFOs */
+ writel(val, priv->base + SSI_FC);
+ uniphier_spi_irq_disable(priv, SSI_IE_RCIE | SSI_IE_RORIE);
static irqreturn_t uniphier_spi_handler(int irq, void *dev_id)
struct uniphier_spi_priv *priv = dev_id;
@@ -531,6 +547,7 @@ static int uniphier_spi_probe(struct platform_device *pdev)
= uniphier_spi_prepare_transfer_hardware;
= uniphier_spi_unprepare_transfer_hardware;
+ master->handle_err = uniphier_spi_handle_err;
master->num_chipselect = 1;

ret = devm_spi_register_master(&pdev->dev, master);
 \ /
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