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Date: Tue, 22 Nov 2022 10:11:05 +0300
From: Dan Carpenter <error27@...il.com>
To: oe-kbuild@...ts.linux.dev, Randy Dunlap <rdunlap@...radead.org>
Cc: lkp@...el.com, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...osinc.com>,
Anup Patel <anup@...infault.org>
Subject: drivers/cpuidle/cpuidle-riscv-sbi.c:506 sbi_genpd_probe() warn:
missing error code 'ret'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: eb7081409f94a9a8608593d0fb63a1aa3d6f95d8
commit: f81f7861ee2aaa6f652f18e8f622547bdd379724 cpuidle: riscv: support non-SMP config
date: 7 months ago
config: riscv-randconfig-m031-20221121
compiler: riscv64-linux-gcc (GCC) 12.1.0
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Reported-by: Dan Carpenter <error27@...il.com>
smatch warnings:
drivers/cpuidle/cpuidle-riscv-sbi.c:506 sbi_genpd_probe() warn: missing error code 'ret'
vim +/ret +506 drivers/cpuidle/cpuidle-riscv-sbi.c
6abf32f1d9c500 Anup Patel 2022-02-10 481 static int sbi_genpd_probe(struct device_node *np)
6abf32f1d9c500 Anup Patel 2022-02-10 482 {
6abf32f1d9c500 Anup Patel 2022-02-10 483 struct device_node *node;
6abf32f1d9c500 Anup Patel 2022-02-10 484 int ret = 0, pd_count = 0;
6abf32f1d9c500 Anup Patel 2022-02-10 485
6abf32f1d9c500 Anup Patel 2022-02-10 486 if (!np)
6abf32f1d9c500 Anup Patel 2022-02-10 487 return -ENODEV;
6abf32f1d9c500 Anup Patel 2022-02-10 488
6abf32f1d9c500 Anup Patel 2022-02-10 489 /*
6abf32f1d9c500 Anup Patel 2022-02-10 490 * Parse child nodes for the "#power-domain-cells" property and
6abf32f1d9c500 Anup Patel 2022-02-10 491 * initialize a genpd/genpd-of-provider pair when it's found.
6abf32f1d9c500 Anup Patel 2022-02-10 492 */
6abf32f1d9c500 Anup Patel 2022-02-10 493 for_each_child_of_node(np, node) {
6abf32f1d9c500 Anup Patel 2022-02-10 494 if (!of_find_property(node, "#power-domain-cells", NULL))
6abf32f1d9c500 Anup Patel 2022-02-10 495 continue;
6abf32f1d9c500 Anup Patel 2022-02-10 496
6abf32f1d9c500 Anup Patel 2022-02-10 497 ret = sbi_pd_init(node);
6abf32f1d9c500 Anup Patel 2022-02-10 498 if (ret)
6abf32f1d9c500 Anup Patel 2022-02-10 499 goto put_node;
6abf32f1d9c500 Anup Patel 2022-02-10 500
6abf32f1d9c500 Anup Patel 2022-02-10 501 pd_count++;
6abf32f1d9c500 Anup Patel 2022-02-10 502 }
6abf32f1d9c500 Anup Patel 2022-02-10 503
6abf32f1d9c500 Anup Patel 2022-02-10 504 /* Bail out if not using the hierarchical CPU topology. */
6abf32f1d9c500 Anup Patel 2022-02-10 505 if (!pd_count)
6abf32f1d9c500 Anup Patel 2022-02-10 @506 goto no_pd;
Error code?
6abf32f1d9c500 Anup Patel 2022-02-10 507
6abf32f1d9c500 Anup Patel 2022-02-10 508 /* Link genpd masters/subdomains to model the CPU topology. */
6abf32f1d9c500 Anup Patel 2022-02-10 509 ret = dt_idle_pd_init_topology(np);
6abf32f1d9c500 Anup Patel 2022-02-10 510 if (ret)
6abf32f1d9c500 Anup Patel 2022-02-10 511 goto remove_pd;
6abf32f1d9c500 Anup Patel 2022-02-10 512
6abf32f1d9c500 Anup Patel 2022-02-10 513 return 0;
6abf32f1d9c500 Anup Patel 2022-02-10 514
6abf32f1d9c500 Anup Patel 2022-02-10 515 put_node:
6abf32f1d9c500 Anup Patel 2022-02-10 516 of_node_put(node);
6abf32f1d9c500 Anup Patel 2022-02-10 517 remove_pd:
6abf32f1d9c500 Anup Patel 2022-02-10 518 sbi_pd_remove();
6abf32f1d9c500 Anup Patel 2022-02-10 519 pr_err("failed to create CPU PM domains ret=%d\n", ret);
6abf32f1d9c500 Anup Patel 2022-02-10 520 no_pd:
6abf32f1d9c500 Anup Patel 2022-02-10 521 return ret;
6abf32f1d9c500 Anup Patel 2022-02-10 522 }
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