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spi: spi-s3c64xx: Do not ignore timeout errors in polling I/O mode

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Currently timeout errors in polling I/O mode transfer are silently ignored.
Fix it by returning an error when we time out waiting on the RX FIFO level
to reach the transfer length.

Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Andi Shyti <andi@etezian.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sylwester Nawrocki 2018-04-16 17:40:19 +02:00 committed by Mark Brown
parent 1c75862d8e
commit 4e0b82ee31
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1 changed files with 2 additions and 0 deletions
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2
drivers/spi/spi-s3c64xx.c
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@ -503,6 +503,8 @@ static int wait_for_pio(struct s3c64xx_spi_driver_data *sdd,
status = readl(regs + S3C64XX_SPI_STATUS);
} while (RX_FIFO_LVL(status, sdd) < xfer->len && --val);
if (!val)
return -EIO;
/* If it was only Tx */
if (!xfer->rx_buf) {