Hi Zack,
I love your patch! Perhaps something to improve:
[auto build test WARNING on drm/drm-next] [also build test WARNING on drm-intel/for-linux-next drm-tip/drm-tip drm-exynos/exynos-drm-next tegra-drm/drm/tegra/for-next v5.17-rc6 next-20220302] [cannot apply to airlied/drm-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Zack-Rusin/drm-vmwgfx-3D-on-arm64-a... base: git://anongit.freedesktop.org/drm/drm drm-next config: i386-randconfig-a004 (https://download.01.org/0day-ci/archive/20220303/202203030802.itIYtJH1-lkp@i...) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project d271fc04d5b97b12e6b797c6067d3c96a8d7470e) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/0day-ci/linux/commit/63d27e1cb11562966a6f07bf0e667b0a54dc... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Zack-Rusin/drm-vmwgfx-3D-on-arm64-and-large-cursor-support/20220302-232641 git checkout 63d27e1cb11562966a6f07bf0e667b0a54dc2412 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpu/drm/vmwgfx/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot lkp@intel.com
All warnings (new ones prefixed by >>):
drivers/gpu/drm/vmwgfx/vmwgfx_irq.c:340:6: warning: variable 'ret' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized]
if (nvec <= 0) { ^~~~~~~~~ drivers/gpu/drm/vmwgfx/vmwgfx_irq.c:369:9: note: uninitialized use occurs here return ret; ^~~ drivers/gpu/drm/vmwgfx/vmwgfx_irq.c:340:2: note: remove the 'if' if its condition is always false if (nvec <= 0) { ^~~~~~~~~~~~~~~~ drivers/gpu/drm/vmwgfx/vmwgfx_irq.c:330:9: note: initialize the variable 'ret' to silence this warning int ret; ^ = 0 1 warning generated.
vim +340 drivers/gpu/drm/vmwgfx/vmwgfx_irq.c
319 320 /** 321 * vmw_irq_install - Install the irq handlers 322 * 323 * @dev_priv: Pointer to the vmw_private device. 324 * Return: Zero if successful. Negative number otherwise. 325 */ 326 int vmw_irq_install(struct vmw_private *dev_priv) 327 { 328 struct pci_dev *pdev = to_pci_dev(dev_priv->drm.dev); 329 struct drm_device *dev = &dev_priv->drm; 330 int ret; 331 int nvec; 332 int i = 0; 333 334 BUILD_BUG_ON((SVGA_IRQFLAG_MAX >> VMWGFX_MAX_NUM_IRQS) != 1); 335 BUG_ON(VMWGFX_MAX_NUM_IRQS != get_count_order(SVGA_IRQFLAG_MAX)); 336 337 nvec = pci_alloc_irq_vectors(pdev, 1, VMWGFX_MAX_NUM_IRQS, 338 PCI_IRQ_ALL_TYPES); 339
340 if (nvec <= 0) {
--- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org