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 <shemmin...@linux-foundation.org> :::::: CC: David S. Miller <da...@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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