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Sun, 13 Mar 2022 00:49:44 +0000 Date: Sun, 13 Mar 2022 08:49:16 +0800 From: kernel test robot To: Samuel Holland Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org, Marc Zyngier Subject: drivers/irqchip/irq-sun6i-r.c:215:79: sparse: sparse: Using plain integer as NULL pointer Message-ID: <202203130814.1YMJ3vAC-lkp@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 68453767131a5deec1e8f9ac92a9042f929e585d commit: 4e34614636b31747b190488240a95647c227021f irqchip/sun6i-r: Use a stacked irqchip driver date: 1 year, 2 months ago config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20220313/202203130814.1YMJ3vAC-lkp@intel.com/config) compiler: aarch64-linux-gcc (GCC) 11.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4e34614636b31747b190488240a95647c227021f git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 4e34614636b31747b190488240a95647c227021f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/gpu/drm/tegra/ drivers/gpu/host1x/ drivers/hid/ drivers/irqchip/ drivers/remoteproc/ drivers/scsi/hisi_sas/ security/integrity/ima/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot sparse warnings: (new ones prefixed by >>) >> drivers/irqchip/irq-sun6i-r.c:215:79: sparse: sparse: Using plain integer as NULL pointer vim +215 drivers/irqchip/irq-sun6i-r.c 184 185 static int sun6i_r_intc_domain_alloc(struct irq_domain *domain, 186 unsigned int virq, 187 unsigned int nr_irqs, void *arg) 188 { 189 struct irq_fwspec *fwspec = arg; 190 struct irq_fwspec gic_fwspec; 191 unsigned long hwirq; 192 unsigned int type; 193 int i, ret; 194 195 ret = sun6i_r_intc_domain_translate(domain, fwspec, &hwirq, &type); 196 if (ret) 197 return ret; 198 if (hwirq + nr_irqs > SUN6I_NR_MUX_BITS) 199 return -EINVAL; 200 201 /* Construct a GIC-compatible fwspec from this fwspec. */ 202 gic_fwspec = (struct irq_fwspec) { 203 .fwnode = domain->parent->fwnode, 204 .param_count = 3, 205 .param = { GIC_SPI, hwirq, type }, 206 }; 207 208 ret = irq_domain_alloc_irqs_parent(domain, virq, nr_irqs, &gic_fwspec); 209 if (ret) 210 return ret; 211 212 for (i = 0; i < nr_irqs; ++i, ++hwirq, ++virq) { 213 if (hwirq == nmi_hwirq) { 214 irq_domain_set_hwirq_and_chip(domain, virq, hwirq, > 215 &sun6i_r_intc_nmi_chip, 0); 216 irq_set_handler(virq, handle_fasteoi_ack_irq); 217 } else { 218 /* Only the NMI is currently supported. */ 219 return -EINVAL; 220 } 221 } 222 223 return 0; 224 } 225 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org