linux-kernel - [tip:irq/core 9/9] kernel/irq/irq_sim.c:173:12: error: expected expression

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Date: Sun, 28 Jan 2024 12:50:10 +0800
From: kernel test robot <lkp@...el.com>
To: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:irq/core 9/9] kernel/irq/irq_sim.c:173:12: error: expected
 expression

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core
head:   590610d72a790458431cbbebc71ee24521533b5e
commit: 590610d72a790458431cbbebc71ee24521533b5e [9/9] genirq/irq_sim: Shrink code by using cleanup helpers
config: x86_64-rhel-8.3-bpf (https://download.01.org/0day-ci/archive/20240128/202401281222.T75XK3kV-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240128/202401281222.T75XK3kV-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/202401281222.T75XK3kV-lkp@intel.com/

All errors (new ones prefixed by >>):

>> kernel/irq/irq_sim.c:173:12: error: expected expression
     173 |         pending = __free(bitmap) = bitmap_zalloc(num_irqs, GFP_KERNEL);
         |                   ^
   include/linux/cleanup.h:64:23: note: expanded from macro '__free'
      64 | #define __free(_name)   __cleanup(__free_##_name)
         |                         ^
   include/linux/compiler-clang.h:15:25: note: expanded from macro '__cleanup'
      15 | #define __cleanup(func) __maybe_unused __attribute__((__cleanup__(func)))
         |                         ^
   include/linux/compiler_attributes.h:344:41: note: expanded from macro '__maybe_unused'
     344 | #define __maybe_unused                  __attribute__((__unused__))
         |                                         ^
   1 error generated.


vim +173 kernel/irq/irq_sim.c

   153	
   154	/**
   155	 * irq_domain_create_sim - Create a new interrupt simulator irq_domain and
   156	 *                         allocate a range of dummy interrupts.
   157	 *
   158	 * @fwnode:     struct fwnode_handle to be associated with this domain.
   159	 * @num_irqs:   Number of interrupts to allocate.
   160	 *
   161	 * On success: return a new irq_domain object.
   162	 * On failure: a negative errno wrapped with ERR_PTR().
   163	 */
   164	struct irq_domain *irq_domain_create_sim(struct fwnode_handle *fwnode,
   165						 unsigned int num_irqs)
   166	{
   167		struct irq_sim_work_ctx *work_ctx __free(kfree) = kmalloc(sizeof(*work_ctx), GFP_KERNEL);
   168		unsigned long *pending;
   169	
   170		if (!work_ctx)
   171			return ERR_PTR(-ENOMEM);
   172	
 > 173		pending = __free(bitmap) = bitmap_zalloc(num_irqs, GFP_KERNEL);
   174		if (!pending)
   175			return ERR_PTR(-ENOMEM);
   176	
   177		work_ctx->domain = irq_domain_create_linear(fwnode, num_irqs,
   178							    &irq_sim_domain_ops,
   179							    work_ctx);
   180		if (!work_ctx->domain)
   181			return ERR_PTR(-ENOMEM);
   182	
   183		work_ctx->irq_count = num_irqs;
   184		work_ctx->work = IRQ_WORK_INIT_HARD(irq_sim_handle_irq);
   185		work_ctx->pending = no_free_ptr(pending);
   186	
   187		return no_free_ptr(work_ctx)->domain;
   188	}
   189	EXPORT_SYMBOL_GPL(irq_domain_create_sim);
   190	

-- 
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https://github.com/intel/lkp-tests/wiki