linux-kernel - [PATCH v3 1/6] spi: rockchip: Fix error in getting num-cs property

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Message-Id: <20220216014028.8123-2-jon.lin@rock-chips.com>
Date:   Wed, 16 Feb 2022 09:40:23 +0800
From:   Jon Lin <jon.lin@...k-chips.com>
To:     broonie@...nel.org
Cc:     heiko@...ech.de, linux-spi@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Jon Lin <jon.lin@...k-chips.com>
Subject: [PATCH v3 1/6] spi: rockchip: Fix error in getting num-cs property

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

Signed-off-by: Jon Lin <jon.lin@...k-chips.com>
---

Changes in v3: None
Changes in v2:
- Fix patches should be at the start of the series

Changes in v1:
- The origin patch

 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 553b6b9d0222..4f65ba3dd19c 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -654,7 +654,7 @@ 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");
@@ -764,8 +764,9 @@ 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;
-- 
2.17.1