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Date: Wed, 27 Sep 2023 07:49:03 +0800
From: kernel test robot <lkp@...el.com>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>
Subject: arch/powerpc/sysdev/fsl_rmu.c:544: warning: Function parameter or
member 'pw' not described in 'fsl_rio_port_write_init'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 0e945134b680040b8613e962f586d91b6d40292d
commit: c265735ff5b1f13272e2bfb196f5c55f9b3c9bac powerpc/85xx: Mark some functions static and add missing includes to fix no previous prototype error
date: 5 weeks ago
config: powerpc-randconfig-003-20230927 (https://download.01.org/0day-ci/archive/20230927/202309270747.cirkf8k8-lkp@intel.com/config)
compiler: powerpc-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230927/202309270747.cirkf8k8-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309270747.cirkf8k8-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> arch/powerpc/sysdev/fsl_rmu.c:544: warning: Function parameter or member 'pw' not described in 'fsl_rio_port_write_init'
>> arch/powerpc/sysdev/fsl_rmu.c:544: warning: Excess function parameter 'mport' description in 'fsl_rio_port_write_init'
>> arch/powerpc/sysdev/fsl_rmu.c:1028: warning: Function parameter or member 'dbell' not described in 'fsl_rio_doorbell_init'
>> arch/powerpc/sysdev/fsl_rmu.c:1028: warning: Excess function parameter 'mport' description in 'fsl_rio_doorbell_init'
vim +544 arch/powerpc/sysdev/fsl_rmu.c
6ec4bedbf153a8 Liu Gang 2011-11-12 533
6ec4bedbf153a8 Liu Gang 2011-11-12 534 /**
6ec4bedbf153a8 Liu Gang 2011-11-12 535 * fsl_rio_port_write_init - MPC85xx port write interface init
6ec4bedbf153a8 Liu Gang 2011-11-12 536 * @mport: Master port implementing the port write unit
6ec4bedbf153a8 Liu Gang 2011-11-12 537 *
6ec4bedbf153a8 Liu Gang 2011-11-12 538 * Initializes port write unit hardware and DMA buffer
6ec4bedbf153a8 Liu Gang 2011-11-12 539 * ring. Called from fsl_rio_setup(). Returns %0 on success
6ec4bedbf153a8 Liu Gang 2011-11-12 540 * or %-ENOMEM on failure.
6ec4bedbf153a8 Liu Gang 2011-11-12 541 */
6ec4bedbf153a8 Liu Gang 2011-11-12 542
abc3aeae3aaa5c Liu Gang 2011-11-12 543 int fsl_rio_port_write_init(struct fsl_rio_pw *pw)
6ec4bedbf153a8 Liu Gang 2011-11-12 @544 {
6ec4bedbf153a8 Liu Gang 2011-11-12 545 int rc = 0;
6ec4bedbf153a8 Liu Gang 2011-11-12 546
6ec4bedbf153a8 Liu Gang 2011-11-12 547 /* Following configurations require a disabled port write controller */
abc3aeae3aaa5c Liu Gang 2011-11-12 548 out_be32(&pw->pw_regs->pwmr,
abc3aeae3aaa5c Liu Gang 2011-11-12 549 in_be32(&pw->pw_regs->pwmr) & ~RIO_IPWMR_PWE);
6ec4bedbf153a8 Liu Gang 2011-11-12 550
6ec4bedbf153a8 Liu Gang 2011-11-12 551 /* Initialize port write */
abc3aeae3aaa5c Liu Gang 2011-11-12 552 pw->port_write_msg.virt = dma_alloc_coherent(pw->dev,
6ec4bedbf153a8 Liu Gang 2011-11-12 553 RIO_PW_MSG_SIZE,
abc3aeae3aaa5c Liu Gang 2011-11-12 554 &pw->port_write_msg.phys, GFP_KERNEL);
abc3aeae3aaa5c Liu Gang 2011-11-12 555 if (!pw->port_write_msg.virt) {
6ec4bedbf153a8 Liu Gang 2011-11-12 556 pr_err("RIO: unable allocate port write queue\n");
6ec4bedbf153a8 Liu Gang 2011-11-12 557 return -ENOMEM;
6ec4bedbf153a8 Liu Gang 2011-11-12 558 }
6ec4bedbf153a8 Liu Gang 2011-11-12 559
abc3aeae3aaa5c Liu Gang 2011-11-12 560 pw->port_write_msg.err_count = 0;
abc3aeae3aaa5c Liu Gang 2011-11-12 561 pw->port_write_msg.discard_count = 0;
6ec4bedbf153a8 Liu Gang 2011-11-12 562
6ec4bedbf153a8 Liu Gang 2011-11-12 563 /* Point dequeue/enqueue pointers at first entry */
abc3aeae3aaa5c Liu Gang 2011-11-12 564 out_be32(&pw->pw_regs->epwqbar, 0);
abc3aeae3aaa5c Liu Gang 2011-11-12 565 out_be32(&pw->pw_regs->pwqbar, (u32) pw->port_write_msg.phys);
6ec4bedbf153a8 Liu Gang 2011-11-12 566
6ec4bedbf153a8 Liu Gang 2011-11-12 567 pr_debug("EIPWQBAR: 0x%08x IPWQBAR: 0x%08x\n",
abc3aeae3aaa5c Liu Gang 2011-11-12 568 in_be32(&pw->pw_regs->epwqbar),
abc3aeae3aaa5c Liu Gang 2011-11-12 569 in_be32(&pw->pw_regs->pwqbar));
6ec4bedbf153a8 Liu Gang 2011-11-12 570
6ec4bedbf153a8 Liu Gang 2011-11-12 571 /* Clear interrupt status IPWSR */
abc3aeae3aaa5c Liu Gang 2011-11-12 572 out_be32(&pw->pw_regs->pwsr,
6ec4bedbf153a8 Liu Gang 2011-11-12 573 (RIO_IPWSR_TE | RIO_IPWSR_QFI | RIO_IPWSR_PWD));
6ec4bedbf153a8 Liu Gang 2011-11-12 574
446957ba512714 Adam Buchbinder 2016-02-24 575 /* Configure port write controller for snooping enable all reporting,
6ec4bedbf153a8 Liu Gang 2011-11-12 576 clear queue full */
abc3aeae3aaa5c Liu Gang 2011-11-12 577 out_be32(&pw->pw_regs->pwmr,
6ec4bedbf153a8 Liu Gang 2011-11-12 578 RIO_IPWMR_SEN | RIO_IPWMR_QFIE | RIO_IPWMR_EIE | RIO_IPWMR_CQ);
6ec4bedbf153a8 Liu Gang 2011-11-12 579
6ec4bedbf153a8 Liu Gang 2011-11-12 580
6ec4bedbf153a8 Liu Gang 2011-11-12 581 /* Hook up port-write handler */
abc3aeae3aaa5c Liu Gang 2011-11-12 582 rc = request_irq(IRQ_RIO_PW(pw), fsl_rio_port_write_handler,
abc3aeae3aaa5c Liu Gang 2011-11-12 583 IRQF_SHARED, "port-write", (void *)pw);
6ec4bedbf153a8 Liu Gang 2011-11-12 584 if (rc < 0) {
6ec4bedbf153a8 Liu Gang 2011-11-12 585 pr_err("MPC85xx RIO: unable to request inbound doorbell irq");
6ec4bedbf153a8 Liu Gang 2011-11-12 586 goto err_out;
6ec4bedbf153a8 Liu Gang 2011-11-12 587 }
6ec4bedbf153a8 Liu Gang 2011-11-12 588 /* Enable Error Interrupt */
6ec4bedbf153a8 Liu Gang 2011-11-12 589 out_be32((u32 *)(rio_regs_win + RIO_LTLEECSR), LTLEECSR_ENABLE_ALL);
6ec4bedbf153a8 Liu Gang 2011-11-12 590
abc3aeae3aaa5c Liu Gang 2011-11-12 591 INIT_WORK(&pw->pw_work, fsl_pw_dpc);
abc3aeae3aaa5c Liu Gang 2011-11-12 592 spin_lock_init(&pw->pw_fifo_lock);
abc3aeae3aaa5c Liu Gang 2011-11-12 593 if (kfifo_alloc(&pw->pw_fifo, RIO_PW_MSG_SIZE * 32, GFP_KERNEL)) {
6ec4bedbf153a8 Liu Gang 2011-11-12 594 pr_err("FIFO allocation failed\n");
6ec4bedbf153a8 Liu Gang 2011-11-12 595 rc = -ENOMEM;
6ec4bedbf153a8 Liu Gang 2011-11-12 596 goto err_out_irq;
6ec4bedbf153a8 Liu Gang 2011-11-12 597 }
6ec4bedbf153a8 Liu Gang 2011-11-12 598
6ec4bedbf153a8 Liu Gang 2011-11-12 599 pr_debug("IPWMR: 0x%08x IPWSR: 0x%08x\n",
abc3aeae3aaa5c Liu Gang 2011-11-12 600 in_be32(&pw->pw_regs->pwmr),
abc3aeae3aaa5c Liu Gang 2011-11-12 601 in_be32(&pw->pw_regs->pwsr));
6ec4bedbf153a8 Liu Gang 2011-11-12 602
6ec4bedbf153a8 Liu Gang 2011-11-12 603 return rc;
6ec4bedbf153a8 Liu Gang 2011-11-12 604
6ec4bedbf153a8 Liu Gang 2011-11-12 605 err_out_irq:
abc3aeae3aaa5c Liu Gang 2011-11-12 606 free_irq(IRQ_RIO_PW(pw), (void *)pw);
6ec4bedbf153a8 Liu Gang 2011-11-12 607 err_out:
abc3aeae3aaa5c Liu Gang 2011-11-12 608 dma_free_coherent(pw->dev, RIO_PW_MSG_SIZE,
abc3aeae3aaa5c Liu Gang 2011-11-12 609 pw->port_write_msg.virt,
abc3aeae3aaa5c Liu Gang 2011-11-12 610 pw->port_write_msg.phys);
6ec4bedbf153a8 Liu Gang 2011-11-12 611 return rc;
6ec4bedbf153a8 Liu Gang 2011-11-12 612 }
6ec4bedbf153a8 Liu Gang 2011-11-12 613
:::::: The code at line 544 was first introduced by commit
:::::: 6ec4bedbf153a8ef71aeba99a40efef556b57798 fsl-rio: Split rio driver into two parts, RapidIO endpoint and message unit
:::::: TO: Liu Gang <Gang.Liu@...escale.com>
:::::: CC: Kumar Gala <galak@...nel.crashing.org>
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