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| author |   Sowjanya Komatineni <skomatineni@nvidia.com> | 2019-04-04 17:14:01 -0700 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2019-04-05 10:22:38 +0700 |
| commit | 76457eea24db3c7d51f623c08838bbffda6ac3ad (patch) | |
| tree | d3e7cb2904eb8e149614b144c4e297d7da4f1b9d /drivers/spi | |
| parent | spi: tegra114: set supported bits per word (diff) | |
| download | linux-dev-76457eea24db3c7d51f623c08838bbffda6ac3ad.tar.xz linux-dev-76457eea24db3c7d51f623c08838bbffda6ac3ad.zip | |
spi: tegra114: use unpacked mode for below 4 bytes
Packed mode expects minimum transfer length of 4 bytes.
This patch fixes this by using unpacked mode for transfers less
than 4 bytes.
Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-tegra114.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index c2ebf1ae632d..ea67ff3b5b2c 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -259,7 +259,8 @@ static unsigned tegra_spi_calculate_curr_xfer_param( tspi->bytes_per_word = DIV_ROUND_UP(bits_per_word, 8); - if (bits_per_word == 8 || bits_per_word == 16 || bits_per_word == 32) { + if ((bits_per_word == 8 || bits_per_word == 16 || + bits_per_word == 32) && t->len > 3) { tspi->is_packed = 1; tspi->words_per_32bit = 32/bits_per_word; } else { |