diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 0996d238f61e73d817c3057a1989a4b8a4ebb851..531d1de85f7f6422e69bad0f046991b7b750ba2d 100644
--- a/drivers/spi/spi.c
+++ b/drivers/spi/spi.c
@@ -2111,6 +2111,7 @@ 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;