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spi: uniphier: fix timeout error

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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@socionext.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Keiji Hayashibara 2019-06-26 09:41:47 +09:00 committed by Mark Brown
parent 94613d5ae1
commit e4671df0bf
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GPG Key ID: 24D68B725D5487D0
1 changed files with 8 additions and 5 deletions
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13
drivers/spi/spi-uniphier.c
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@ -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;
}