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Date: Wed, 26 Jun 2019 09:41:47 +0900 From: Keiji Hayashibara <hayashibara.keiji@...ionext.com> To: broonie@...nel.org, yamada.masahiro@...ionext.com, linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org Cc: masami.hiramatsu@...aro.org, jaswinder.singh@...aro.org, linux-kernel@...r.kernel.org, hayashibara.keiji@...ionext.com Subject: [PATCH 1/2] spi: uniphier: fix timeout error Timeout error was silently ignored. This commit adds timeout error handling and modifies return type of wait_for_completion_timeout(). Signed-off-by: Keiji Hayashibara <hayashibara.keiji@...ionext.com> --- drivers/spi/spi-uniphier.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/spi/spi-uniphier.c b/drivers/spi/spi-uniphier.c index 5a6137f..c3c35c0 100644 --- a/drivers/spi/spi-uniphier.c +++ b/drivers/spi/spi-uniphier.c @@ -328,7 +328,8 @@ static int uniphier_spi_transfer_one(struct spi_master *master, struct spi_transfer *t) { struct uniphier_spi_priv *priv = spi_master_get_devdata(master); - int status; + struct device *dev = master->dev.parent; + unsigned long time_left; uniphier_spi_setup_transfer(spi, t); @@ -338,13 +339,15 @@ static int uniphier_spi_transfer_one(struct spi_master *master, uniphier_spi_irq_enable(spi, SSI_IE_RCIE | SSI_IE_RORIE); - status = wait_for_completion_timeout(&priv->xfer_done, - msecs_to_jiffies(SSI_TIMEOUT_MS)); + time_left = wait_for_completion_timeout(&priv->xfer_done, + msecs_to_jiffies(SSI_TIMEOUT_MS)); uniphier_spi_irq_disable(spi, SSI_IE_RCIE | SSI_IE_RORIE); - if (status < 0) - return status; + if (!time_left) { + dev_err(dev, "transfer timeout.\n"); + return -ETIMEDOUT; + } return priv->error; } -- 2.7.4
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