From: Arnd Bergmann <arnd@arndb.de>
To: "David S. Miller" <davem@davemloft.net>
Cc: Arnd Bergmann <arnd@arndb.de>, Felix Fietkau <nbd@openwrt.org>,
John Crispin <blogic@openwrt.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: [PATCH 3/3] net: mediatek: check device_reset return code
Date: Mon, 14 Mar 2016 15:07:12 +0100 [thread overview]
Message-ID: <1457964435-2945038-3-git-send-email-arnd@arndb.de> (raw)
In-Reply-To: <1457964435-2945038-1-git-send-email-arnd@arndb.de>
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@arndb.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
next prev parent reply other threads:[~2016-03-14 14:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-14 14:07 [PATCH 1/3] net: mediatek: use dma_addr_t correctly Arnd Bergmann
2016-03-14 14:07 ` [PATCH 2/3] net: mediatek: remove incorrect dma_mask assignment Arnd Bergmann
2016-03-14 17:06 ` David Miller
2016-03-14 14:07 ` Arnd Bergmann [this message]
2016-03-14 17:06 ` [PATCH 3/3] net: mediatek: check device_reset return code David Miller
2016-03-14 17:06 ` [PATCH 1/3] net: mediatek: use dma_addr_t correctly David Miller
2016-03-14 18:01 ` John Crispin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1457964435-2945038-3-git-send-email-arnd@arndb.de \
--to=arnd@arndb.de \
--cc=blogic@openwrt.org \
--cc=davem@davemloft.net \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mediatek@lists.infradead.org \
--cc=matthias.bgg@gmail.com \
--cc=nbd@openwrt.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).