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Message-ID: <202107080927.vpWBnLoc-lkp@intel.com>
Date: Thu, 8 Jul 2021 15:06:18 +0300
From: Dan Carpenter <dan.carpenter@...cle.com>
To: kbuild@...ts.01.org, Anup Patel <anup.patel@....com>
Cc: lkp@...el.com, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [avpatel:riscv_aia_v1 9/18] drivers/irqchip/irq-aclint-swi.c:262
aclint_swi_init() warn: 'base' not released on lines: 257.
tree: https://github.com/avpatel/linux.git riscv_aia_v1
head: e4b6f153340e5471c82603f7b08226ba6e2c6249
commit: 5fc4912d191fc3f4c620e76d500ce19e136d54bf [9/18] irqchip: Add ACLINT software interrupt driver
config: riscv-randconfig-m031-20210707 (attached as .config)
compiler: riscv64-linux-gcc (GCC) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dan Carpenter <dan.carpenter@...cle.com>
smatch warnings:
drivers/irqchip/irq-aclint-swi.c:262 aclint_swi_init() warn: 'base' not released on lines: 257.
vim +/base +262 drivers/irqchip/irq-aclint-swi.c
5fc4912d191fc3 Anup Patel 2021-05-13 189 static int __init aclint_swi_init(struct device_node *node,
5fc4912d191fc3 Anup Patel 2021-05-13 190 struct device_node *parent)
5fc4912d191fc3 Anup Patel 2021-05-13 191 {
5fc4912d191fc3 Anup Patel 2021-05-13 192 int rc;
5fc4912d191fc3 Anup Patel 2021-05-13 193 void __iomem *base;
5fc4912d191fc3 Anup Patel 2021-05-13 194 struct aclint_swi *swi;
5fc4912d191fc3 Anup Patel 2021-05-13 195 u32 i, nr_irqs, nr_cpus = 0;
5fc4912d191fc3 Anup Patel 2021-05-13 196
5fc4912d191fc3 Anup Patel 2021-05-13 197 /* Map the registers */
5fc4912d191fc3 Anup Patel 2021-05-13 198 base = of_iomap(node, 0);
^^^^^^^^^^^^^^^^^^^^^^^^^
5fc4912d191fc3 Anup Patel 2021-05-13 199 if (!base) {
5fc4912d191fc3 Anup Patel 2021-05-13 200 pr_err("%pOFP: could not map registers\n", node);
5fc4912d191fc3 Anup Patel 2021-05-13 201 return -ENODEV;
5fc4912d191fc3 Anup Patel 2021-05-13 202 }
5fc4912d191fc3 Anup Patel 2021-05-13 203
5fc4912d191fc3 Anup Patel 2021-05-13 204 /* Iterarte over each target CPU connected with this ACLINT */
5fc4912d191fc3 Anup Patel 2021-05-13 205 nr_irqs = of_irq_count(node);
5fc4912d191fc3 Anup Patel 2021-05-13 206 for (i = 0; i < nr_irqs; i++) {
5fc4912d191fc3 Anup Patel 2021-05-13 207 struct of_phandle_args parent;
5fc4912d191fc3 Anup Patel 2021-05-13 208 int cpu, hartid;
5fc4912d191fc3 Anup Patel 2021-05-13 209
5fc4912d191fc3 Anup Patel 2021-05-13 210 if (of_irq_parse_one(node, i, &parent)) {
5fc4912d191fc3 Anup Patel 2021-05-13 211 pr_err("%pOFP: failed to parse irq %d.\n",
5fc4912d191fc3 Anup Patel 2021-05-13 212 node, i);
5fc4912d191fc3 Anup Patel 2021-05-13 213 continue;
5fc4912d191fc3 Anup Patel 2021-05-13 214 }
5fc4912d191fc3 Anup Patel 2021-05-13 215
5fc4912d191fc3 Anup Patel 2021-05-13 216 if (parent.args[0] != RV_IRQ_SOFT) {
5fc4912d191fc3 Anup Patel 2021-05-13 217 pr_err("%pOFP: invalid irq %d (hwirq %d)\n",
5fc4912d191fc3 Anup Patel 2021-05-13 218 node, i, parent.args[0]);
5fc4912d191fc3 Anup Patel 2021-05-13 219 continue;
5fc4912d191fc3 Anup Patel 2021-05-13 220 }
5fc4912d191fc3 Anup Patel 2021-05-13 221
5fc4912d191fc3 Anup Patel 2021-05-13 222 hartid = riscv_of_parent_hartid(parent.np);
5fc4912d191fc3 Anup Patel 2021-05-13 223 if (hartid < 0) {
5fc4912d191fc3 Anup Patel 2021-05-13 224 pr_warn("failed to parse hart ID for irq %d.\n", i);
5fc4912d191fc3 Anup Patel 2021-05-13 225 continue;
5fc4912d191fc3 Anup Patel 2021-05-13 226 }
5fc4912d191fc3 Anup Patel 2021-05-13 227
5fc4912d191fc3 Anup Patel 2021-05-13 228 cpu = riscv_hartid_to_cpuid(hartid);
5fc4912d191fc3 Anup Patel 2021-05-13 229 if (cpu < 0) {
5fc4912d191fc3 Anup Patel 2021-05-13 230 pr_warn("Invalid cpuid for irq %d\n", i);
5fc4912d191fc3 Anup Patel 2021-05-13 231 continue;
5fc4912d191fc3 Anup Patel 2021-05-13 232 }
5fc4912d191fc3 Anup Patel 2021-05-13 233
5fc4912d191fc3 Anup Patel 2021-05-13 234 /* Find parent domain and register chained handler */
5fc4912d191fc3 Anup Patel 2021-05-13 235 if (!aclint_swi_parent_irq && irq_find_host(parent.np)) {
5fc4912d191fc3 Anup Patel 2021-05-13 236 aclint_swi_parent_irq = irq_of_parse_and_map(node, i);
5fc4912d191fc3 Anup Patel 2021-05-13 237 if (aclint_swi_parent_irq) {
5fc4912d191fc3 Anup Patel 2021-05-13 238 irq_set_chained_handler(aclint_swi_parent_irq,
5fc4912d191fc3 Anup Patel 2021-05-13 239 aclint_swi_handle_irq);
5fc4912d191fc3 Anup Patel 2021-05-13 240 cpuhp_setup_state(CPUHP_AP_ONLINE_DYN,
5fc4912d191fc3 Anup Patel 2021-05-13 241 "irqchip/riscv/aclint-swi:starting",
5fc4912d191fc3 Anup Patel 2021-05-13 242 aclint_swi_starting_cpu,
5fc4912d191fc3 Anup Patel 2021-05-13 243 aclint_swi_dying_cpu);
5fc4912d191fc3 Anup Patel 2021-05-13 244 }
5fc4912d191fc3 Anup Patel 2021-05-13 245 }
5fc4912d191fc3 Anup Patel 2021-05-13 246
5fc4912d191fc3 Anup Patel 2021-05-13 247 swi = per_cpu_ptr(&aclint_swis, cpu);
5fc4912d191fc3 Anup Patel 2021-05-13 248 swi->sip_reg = base + i * sizeof(u32);
5fc4912d191fc3 Anup Patel 2021-05-13 249 writel(0, swi->sip_reg);
5fc4912d191fc3 Anup Patel 2021-05-13 250
5fc4912d191fc3 Anup Patel 2021-05-13 251 nr_cpus++;
5fc4912d191fc3 Anup Patel 2021-05-13 252 }
5fc4912d191fc3 Anup Patel 2021-05-13 253
5fc4912d191fc3 Anup Patel 2021-05-13 254 /* Create the IPI domain for ACLINT SWI device */
5fc4912d191fc3 Anup Patel 2021-05-13 255 rc = aclint_swi_domain_init(node);
5fc4912d191fc3 Anup Patel 2021-05-13 256 if (rc)
5fc4912d191fc3 Anup Patel 2021-05-13 257 return rc;
This code doesn't do any cleanup.
5fc4912d191fc3 Anup Patel 2021-05-13 258
5fc4912d191fc3 Anup Patel 2021-05-13 259 /* Announce the ACLINT SWI device */
5fc4912d191fc3 Anup Patel 2021-05-13 260 pr_info("%pOFP: providing IPIs for %d CPUs\n", node, nr_cpus);
5fc4912d191fc3 Anup Patel 2021-05-13 261
5fc4912d191fc3 Anup Patel 2021-05-13 @262 return 0;
5fc4912d191fc3 Anup Patel 2021-05-13 263 }
---
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