diff options
| author | Nam Cao <namcao@linutronix.de> | 2023-11-29 19:31:55 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2023-11-30 15:02:39 +0300 |
| commit | 39cefd85098d12439586824c39f8e1948fac186d (patch) | |
| tree | 855cefc78774e7b78d495ac9ffb7671286a65bc4 /drivers/spi/spi.c | |
| parent | 2cc14f52aeb78ce3f29677c2de1f06c0e91471ab (diff) | |
| download | linux-39cefd85098d12439586824c39f8e1948fac186d.tar.xz | |
spi: introduce SPI_TRANS_FAIL_IO for error reporting
The default message transfer implementation - spi_transfer_one_message -
invokes the specific device driver's transfer_one(), then waits for
completion. However, there is no mechanism for the device driver to
report failure in the middle of the transfer.
Introduce SPI_TRANS_FAIL_IO for drivers to report transfer failure.
Signed-off-by: Nam Cao <namcao@linutronix.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/4b420dac528e60f122adde16851da88e4798c1ea.1701274975.git.namcao@linutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 8ead7acb99f3..a4b8c07c5951 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1361,6 +1361,9 @@ static int spi_transfer_wait(struct spi_controller *ctlr, "SPI transfer timed out\n"); return -ETIMEDOUT; } + + if (xfer->error & SPI_TRANS_FAIL_IO) + return -EIO; } return 0; |