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spi: tegra114: use unpacked mode for below 4 bytes

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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>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sowjanya Komatineni 2019-04-04 17:14:01 -07:00 committed by Mark Brown
parent f0a0bc90c6
commit 76457eea24
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GPG Key ID: 24D68B725D5487D0
1 changed files with 2 additions and 1 deletions
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drivers/spi/spi-tegra114.c
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@ -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 {