Messages in this thread Patch in this message | | | From | Sowjanya Komatineni <> | Subject | [PATCH V2 02/20] spi: tegra114: use unpacked mode for below 4 bytes | Date | Thu, 4 Apr 2019 17:14:01 -0700 |
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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> --- drivers/spi/spi-tegra114.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index ba1639310282..3042521c3785 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 { -- 2.7.4
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