From: kbuild test robot <lkp@intel.com>
To: Eric Dumazet <edumazet@google.com>
Cc: kbuild-all@01.org, "David S . Miller" <davem@davemloft.net>,
netdev <netdev@vger.kernel.org>,
Eric Dumazet <edumazet@google.com>,
Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: [PATCH net-next 6/9] ep93xx_eth: add GRO support
Date: Sun, 5 Feb 2017 04:47:20 +0800 [thread overview]
Message-ID: <201702050406.Mb15e36Q%fengguang.wu@intel.com> (raw)
In-Reply-To: <20170204182038.3752-7-edumazet@google.com>
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Hi Eric,
[auto build test WARNING on net-next/master]
url: https://github.com/0day-ci/linux/commits/Eric-Dumazet/net-get-rid-of-most-__napi_complete-usages/20170205-022748
config: arm-ep93xx_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=arm
All warnings (new ones prefixed by >>):
drivers/net/ethernet/cirrus/ep93xx_eth.c: In function 'ep93xx_poll':
>> drivers/net/ethernet/cirrus/ep93xx_eth.c:319:5: warning: 'rx' is used uninitialized in this function [-Wuninitialized]
rx = ep93xx_rx(dev, rx, budget);
~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +/rx +319 drivers/net/ethernet/cirrus/ep93xx_eth.c
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 303 }
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 304
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 305 err:
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 306 ep->rx_pointer = (entry + 1) & (RX_QUEUE_ENTRIES - 1);
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 307 processed++;
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 308 }
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 309
bea3348e drivers/net/arm/ep93xx_eth.c Stephen Hemminger 2007-10-03 310 return processed;
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 311 }
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 312
bea3348e drivers/net/arm/ep93xx_eth.c Stephen Hemminger 2007-10-03 313 static int ep93xx_poll(struct napi_struct *napi, int budget)
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 314 {
bea3348e drivers/net/arm/ep93xx_eth.c Stephen Hemminger 2007-10-03 315 struct ep93xx_priv *ep = container_of(napi, struct ep93xx_priv, napi);
bea3348e drivers/net/arm/ep93xx_eth.c Stephen Hemminger 2007-10-03 316 struct net_device *dev = ep->dev;
7b8cc50a drivers/net/ethernet/cirrus/ep93xx_eth.c Eric Dumazet 2017-02-04 317 int rx;
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 318
bea3348e drivers/net/arm/ep93xx_eth.c Stephen Hemminger 2007-10-03 @319 rx = ep93xx_rx(dev, rx, budget);
7b8cc50a drivers/net/ethernet/cirrus/ep93xx_eth.c Eric Dumazet 2017-02-04 320 if ((rx < budget) && napi_complete_done(napi, rx)) {
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 321 spin_lock_irq(&ep->rx_lock);
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 322 wrl(ep, REG_INTEN, REG_INTEN_TX | REG_INTEN_RX);
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 323 spin_unlock_irq(&ep->rx_lock);
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 324 }
1d22e05d drivers/net/arm/ep93xx_eth.c Lennert Buytenhek 2006-09-22 325
1827d2e9 drivers/net/arm/ep93xx_eth.c David S. Miller 2010-05-03 326 if (rx) {
1827d2e9 drivers/net/arm/ep93xx_eth.c David S. Miller 2010-05-03 327 wrw(ep, REG_RXDENQ, rx);
:::::: The code at line 319 was first introduced by commit
:::::: bea3348eef27e6044b6161fd04c3152215f96411 [NET]: Make NAPI polling independent of struct net_device objects.
:::::: TO: Stephen Hemminger <shemminger@linux-foundation.org>
:::::: CC: David S. Miller <davem@sunset.davemloft.net>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2017-02-04 20:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-04 18:20 [PATCH net-next 0/9] net: get rid of most __napi_complete() usages Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 1/9] 8139too: use napi_complete_done() Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 2/9] 8139cp: " Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 3/9] epic100: " Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 4/9] amd8111e: add GRO support Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 5/9] pcnet32: use napi_complete_done() Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 6/9] ep93xx_eth: add GRO support Eric Dumazet
2017-02-04 20:47 ` kbuild test robot [this message]
2017-02-04 18:20 ` [PATCH net-next 7/9] skge: use napi_complete_done() Eric Dumazet
2017-02-04 21:44 ` Stephen Hemminger
2017-02-04 22:16 ` Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 8/9] ks8695net: add GRO support Eric Dumazet
2017-02-04 18:20 ` [PATCH net-next 9/9] qla3xxx: " Eric Dumazet
2017-02-04 22:17 ` [PATCH net-next 0/9] net: get rid of most __napi_complete() usages Eric Dumazet
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