linux-kernel - [PATCH AUTOSEL 5.10 03/14] spi: rockchip: Fix error in getting num-cs property

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Message-Id: <20220301201833.18841-3-sashal@kernel.org>
Date:   Tue,  1 Mar 2022 15:18:15 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Jon Lin <jon.lin@...k-chips.com>, Mark Brown <broonie@...nel.org>,
        Sasha Levin <sashal@...nel.org>, heiko@...ech.de,
        linux-spi@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.10 03/14] spi: rockchip: Fix error in getting num-cs property

From: Jon Lin <jon.lin@...k-chips.com>

[ Upstream commit 9382df0a98aad5bbcd4d634790305a1d786ad224 ]

Get num-cs u32 from dts of_node property rather than u16.

Signed-off-by: Jon Lin <jon.lin@...k-chips.com>
Link: https://lore.kernel.org/r/20220216014028.8123-2-jon.lin@rock-chips.com
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/spi/spi-rockchip.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 624273d0e727f..a594310754111 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -636,7 +636,7 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 	struct spi_controller *ctlr;
 	struct resource *mem;
 	struct device_node *np = pdev->dev.of_node;
-	u32 rsd_nsecs;
+	u32 rsd_nsecs, num_cs;
 	bool slave_mode;
 
 	slave_mode = of_property_read_bool(np, "spi-slave");
@@ -744,8 +744,9 @@ static int rockchip_spi_probe(struct platform_device *pdev)
 		 * rk spi0 has two native cs, spi1..5 one cs only
 		 * if num-cs is missing in the dts, default to 1
 		 */
-		if (of_property_read_u16(np, "num-cs", &ctlr->num_chipselect))
-			ctlr->num_chipselect = 1;
+		if (of_property_read_u32(np, "num-cs", &num_cs))
+			num_cs = 1;
+		ctlr->num_chipselect = num_cs;
 		ctlr->use_gpio_descriptors = true;
 	}
 	ctlr->dev.of_node = pdev->dev.of_node;
-- 
2.34.1