[PATCH AUTOSEL 5.4 066/175] spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource

Sasha Levin
2020-06-09T00:10:10Z

From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

[ Upstream commit 0dadde344d965566589cd82797893d5aa06557a3 ]

By unknown reason the commit 64bee4d28c9e
("spi / ACPI: add ACPI enumeration support")
missed the DataBitLength property to encounter when parse SPI slave
device data from ACPI.

Fill the gap here.

Fixes: 64bee4d28c9e ("spi / ACPI: add ACPI enumeration support")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20200413180406.1826-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/spi/spi.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index c186d3a944cd..177d31c2ea7d 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -1950,6 +1950,7 @@ static int acpi_spi_add_resource(struct acpi_resource *ares, void *data)
}

lookup->max_speed_hz = sb->connection_speed;
+ lookup->bits_per_word = sb->data_bit_length;

if (sb->clock_phase == ACPI_SPI_SECOND_PHASE)
lookup->mode |= SPI_CPHA;
--
2.25.1