Hi Joao, [auto build test WARNING on net-next/master] [also build test WARNING on next-20170214] [cannot apply to v4.10-rc8] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/Joao-Pinto/add-support-for-multiple-queues-channels-in-stmmac/20170215-024621 config: i386-randconfig-x002-201707 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/net/ethernet/stmicro/stmmac/stmmac_main.c: In function 'stmmac_hw_setup': >> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1932:3: warning: >> 'dummy_dma_rx_phy' may be used uninitialized in this function >> [-Wmaybe-uninitialized] priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg, ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ dummy_dma_tx_phy, dummy_dma_rx_phy, atds); ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/ethernet/stmicro/stmmac/stmmac_main.c:1909:6: note: 'dummy_dma_rx_phy' was declared here u32 dummy_dma_rx_phy, dummy_dma_tx_phy = 0; ^~~~~~~~~~~~~~~~ vim +/dummy_dma_rx_phy +1932 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c a332e2fa Niklas Cassel 2016-12-07 1916 if (!priv->plat->dma_cfg || !priv->plat->dma_cfg->pbl) { a332e2fa Niklas Cassel 2016-12-07 1917 dev_err(priv->device, "Invalid DMA configuration\n"); 89ab75bf Niklas Cassel 2016-12-07 1918 return -EINVAL; 0f1f88a8 Giuseppe CAVALLARO 2012-04-18 1919 } 0f1f88a8 Giuseppe CAVALLARO 2012-04-18 1920 c24602ef Giuseppe CAVALLARO 2013-03-26 1921 if (priv->extend_desc && (priv->mode == STMMAC_RING_MODE)) c24602ef Giuseppe CAVALLARO 2013-03-26 1922 atds = 1; c24602ef Giuseppe CAVALLARO 2013-03-26 1923 495db273 Giuseppe Cavallaro 2016-02-29 1924 ret = priv->hw->dma->reset(priv->ioaddr); 495db273 Giuseppe Cavallaro 2016-02-29 1925 if (ret) { 495db273 Giuseppe Cavallaro 2016-02-29 1926 dev_err(priv->device, "Failed to reset the dma\n"); 495db273 Giuseppe Cavallaro 2016-02-29 1927 return ret; 495db273 Giuseppe Cavallaro 2016-02-29 1928 } 495db273 Giuseppe Cavallaro 2016-02-29 1929 5047d338 Joao Pinto 2017-02-14 1930 if (priv->synopsys_id >= DWMAC_CORE_4_00) { 5047d338 Joao Pinto 2017-02-14 1931 /* DMA Configuration */ 50ca903a Niklas Cassel 2016-12-07 @1932 priv->hw->dma->init(priv->ioaddr, priv->plat->dma_cfg, 5047d338 Joao Pinto 2017-02-14 1933 dummy_dma_tx_phy, dummy_dma_rx_phy, atds); 5047d338 Joao Pinto 2017-02-14 1934 5047d338 Joao Pinto 2017-02-14 1935 /* DMA RX Channel Configuration */ 5047d338 Joao Pinto 2017-02-14 1936 for (chan = 0; chan < rx_channels_count; chan++) { 5047d338 Joao Pinto 2017-02-14 1937 priv->hw->dma->init_rx_chan(priv->ioaddr, 5047d338 Joao Pinto 2017-02-14 1938 priv->plat->dma_cfg, 5047d338 Joao Pinto 2017-02-14 1939 priv->dma_rx_phy, chan); afea0365 Giuseppe Cavallaro 2016-02-29 1940 :::::: The code at line 1932 was first introduced by commit :::::: 50ca903afc2a4ccf7efd25744577fecb0ce6fb49 net: stmmac: simplify the common DMA init API :::::: TO: Niklas Cassel <niklas.cas...@axis.com> :::::: CC: David S. Miller <da...@davemloft.net> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
.config.gz
Description: application/gzip
