linux-kernel - [PATCH] spi: dw: Fix error return code in dw_spi_bt1

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Message-ID: <1607071357-33378-1-git-send-email-zhangchangzhong@huawei.com>
Date:   Fri, 4 Dec 2020 16:42:37 +0800
From:   Zhang Changzhong <zhangchangzhong@...wei.com>
To:     Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Ramil Zaripov <Ramil.Zaripov@...kalelectronics.ru>
CC:     Zhang Changzhong <zhangchangzhong@...wei.com>,
        <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] spi: dw: Fix error return code in dw_spi_bt1_probe()

Fix to return a negative error code from the error handling
case instead of 0, as done elsewhere in this function.

Fixes: abf00907538e ("spi: dw: Add Baikal-T1 SPI Controller glue driver")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhang Changzhong <zhangchangzhong@...wei.com>
---
 drivers/spi/spi-dw-bt1.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-dw-bt1.c b/drivers/spi/spi-dw-bt1.c
index f382dfad..c279b78 100644
--- a/drivers/spi/spi-dw-bt1.c
+++ b/drivers/spi/spi-dw-bt1.c
@@ -280,8 +280,10 @@ static int dw_spi_bt1_probe(struct platform_device *pdev)
 	dws->bus_num = pdev->id;
 	dws->reg_io_width = 4;
 	dws->max_freq = clk_get_rate(dwsbt1->clk);
-	if (!dws->max_freq)
+	if (!dws->max_freq) {
+		ret = -EINVAL;
 		goto err_disable_clk;
+	}
 
 	init_func = device_get_match_data(&pdev->dev);
 	ret = init_func(pdev, dwsbt1);
-- 
2.9.5