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Message-Id: <1457964435-2945038-3-git-send-email-arnd@arndb.de> Date: Mon, 14 Mar 2016 15:07:12 +0100 From: Arnd Bergmann <arnd@...db.de> To: "David S. Miller" <davem@...emloft.net> Cc: Arnd Bergmann <arnd@...db.de>, Felix Fietkau <nbd@...nwrt.org>, John Crispin <blogic@...nwrt.org>, Matthias Brugger <matthias.bgg@...il.com>, netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: [PATCH 3/3] net: mediatek: check device_reset return code The device_reset() function may fail, so we have to check its return value, e.g. to make deferred probing work correctly. gcc warns about it because of the warn_unused_result attribute: drivers/net/ethernet/mediatek/mtk_eth_soc.c: In function 'mtk_probe': drivers/net/ethernet/mediatek/mtk_eth_soc.c:1679:2: error: ignoring return value of 'device_reset', declared with attribute warn_unused_result [-Werror=unused-result] This adds the trivial error check to propagate the return value to the generic platform device probe code. Signed-off-by: Arnd Bergmann <arnd@...db.de> --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index 87f417712da0..1e6c5498bba9 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -1676,7 +1676,9 @@ static int mtk_probe(struct platform_device *pdev) struct mtk_eth *eth; int err; - device_reset(&pdev->dev); + err = device_reset(&pdev->dev); + if (err) + return err; match = of_match_device(of_mtk_match, &pdev->dev); soc = (struct mtk_soc_data *)match->data; -- 2.7.0
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