Hi Sudip, [auto build test WARNING on tty/tty-testing] [also build test WARNING on v4.10-rc5 next-20170125] [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/Sudip-Mukherjee/serial-exar-split-out-the-exar-code-from-8250_pci/20170130-045633 base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git tty-testing config: x86_64-rhel (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=x86_64 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/tty/serial/8250/8250_exar.c: In function 'exar_pci_probe': >> drivers/tty/serial/8250/8250_exar.c:207:49: warning: 'board' may be used uninitialized in this function [-Wmaybe-uninitialized] maxnr = pci_resource_len(pcidev, bar) >> (board->reg_shift + 3); ~~~~~^~~~~~~~~~~ vim +/board +207 drivers/tty/serial/8250/8250_exar.c 191 port->port.private_data = NULL; 192 } 193 194 static int 195 exar_pci_probe(struct pci_dev *pcidev, const struct pci_device_id *ent) 196 { 197 unsigned int nr_ports, i, bar = 0, maxnr; 198 struct exar8250_board *board; 199 struct uart_8250_port uart; 200 struct exar8250 *priv; 201 int rc; 202 203 rc = pcim_enable_device(pcidev); 204 if (rc) 205 return rc; 206 > 207 maxnr = pci_resource_len(pcidev, bar) >> (board->reg_shift + 3); 208 209 nr_ports = board->num_ports ? board->num_ports : pcidev->device & 0x0f; 210 211 priv = devm_kzalloc(&pcidev->dev, sizeof(*priv) + 212 sizeof(unsigned int) * nr_ports, 213 GFP_KERNEL); 214 if (!priv) 215 return -ENOMEM; --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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