linux-kernel - [PATCH] staging: ralink-gdma: Check return code of device

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Message-Id: <20210306141322.7516-1-bobdc9664@seznam.cz>
Date:   Sat,  6 Mar 2021 15:13:22 +0100
From:   Giovanni Gherdovich <bobdc9664@...nam.cz>
To:     George Hilliard <thirtythreeforty@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Giovanni Gherdovich <bobdc9664@...nam.cz>,
        John Crispin <blogic@...nwrt.org>,
        Neil Brown <neil@...wn.name>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] staging: ralink-gdma: Check return code of device_reset

The device_reset() function is marked as "__must_check", thus the static
analysis tool "sparse" complains that in ralink-gdma its return value is
ignored. Log a warning in case it returns an error.

Signed-off-by: Giovanni Gherdovich <bobdc9664@...nam.cz>
---
 drivers/staging/ralink-gdma/ralink-gdma.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/ralink-gdma/ralink-gdma.c b/drivers/staging/ralink-gdma/ralink-gdma.c
index 655df317d0ee..3c26b665ee7c 100644
--- a/drivers/staging/ralink-gdma/ralink-gdma.c
+++ b/drivers/staging/ralink-gdma/ralink-gdma.c
@@ -833,7 +833,9 @@ static int gdma_dma_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	device_reset(&pdev->dev);
+	ret = device_reset(&pdev->dev);
+	if (ret)
+		dev_err(&pdev->dev, "failed to reset: %d\n", ret);
 
 	dd = &dma_dev->ddev;
 	dma_cap_set(DMA_MEMCPY, dd->cap_mask);
-- 
2.26.2