linux-kernel - [PATCH 5.4 060/261] spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource

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Message-Id: <20200619141652.795737704@linuxfoundation.org>
Date:   Fri, 19 Jun 2020 16:31:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.4 060/261] spi: Respect DataBitLength field of SpiSerialBusV2() ACPI resource

From: Andy Shevchenko <andriy.shevchenko@...ux.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@...ux.intel.com>
Link: https://lore.kernel.org/r/20200413180406.1826-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c
index 6bfbf0cfcf63..c6242f0a307f 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