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| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2018-04-16 17:40:19 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-04-17 11:46:52 +0100 |
| commit | 4e0b82ee3157218747f87d6fe13a3ee8c29bc509 (patch) | |
| tree | 8398057d778b041ecd7f3a196d62197c57cfbdac | |
| parent | 1c75862d8e5a7152a0d343160a4287f4cc05249a (diff) | |
| download | linux-4e0b82ee3157218747f87d6fe13a3ee8c29bc509.tar.bz2 | |
spi: spi-s3c64xx: Do not ignore timeout errors in polling I/O mode
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>
| -rw-r--r-- | drivers/spi/spi-s3c64xx.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index b7333a883442..4c27426bcb40 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -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) { |