Re: [PATCH hyperv-next v5 08/11] Drivers: hv: vmbus: Get the IRQ number from DeviceTree

[kernel test robot <lkp@intel.com>]

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TO: Roman Kisel <romank@linux.microsoft.com>
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Hi Roman,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 3a7f7785eae7cf012af128ca9e383c91e4955354]

url:    https://github.com/intel-lab-lkp/linux/commits/Roman-Kisel/arm64-kvm-smccc-Introduce-and-use-API-for-detectting-hypervisor-presence/20250308-060639
base:   3a7f7785eae7cf012af128ca9e383c91e4955354
patch link:    https://lore.kernel.org/r/20250307220304.247725-9-romank%40linux.microsoft.com
patch subject: [PATCH hyperv-next v5 08/11] Drivers: hv: vmbus: Get the IRQ number from DeviceTree
:::::: branch date: 6 days ago
:::::: commit date: 6 days ago
config: arm64-randconfig-r071-20250312 (https://download.01.org/0day-ci/archive/20250313/202503132345.uKNehsnm-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0

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@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202503132345.uKNehsnm-lkp@intel.com/

smatch warnings:
drivers/hv/vmbus_drv.c:2355 vmbus_set_irq() warn: platform_get_irq() does not return zero

vim +2355 drivers/hv/vmbus_drv.c

f83705a51275ed2 Saurabh Sengar 2023-03-20  2347  
2e494cbd89c51d1 Roman Kisel    2025-03-07  2348  static int __maybe_unused vmbus_set_irq(struct platform_device *pdev)
2e494cbd89c51d1 Roman Kisel    2025-03-07  2349  {
2e494cbd89c51d1 Roman Kisel    2025-03-07  2350  	struct irq_data *data;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2351  	int irq;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2352  	irq_hw_number_t hwirq;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2353  
2e494cbd89c51d1 Roman Kisel    2025-03-07  2354  	irq = platform_get_irq(pdev, 0);
2e494cbd89c51d1 Roman Kisel    2025-03-07 @2355  	if (irq == 0) {
2e494cbd89c51d1 Roman Kisel    2025-03-07  2356  		pr_err("VMBus interrupt mapping failure\n");
2e494cbd89c51d1 Roman Kisel    2025-03-07  2357  		return -EINVAL;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2358  	}
2e494cbd89c51d1 Roman Kisel    2025-03-07  2359  	if (irq < 0) {
2e494cbd89c51d1 Roman Kisel    2025-03-07  2360  		pr_err("VMBus interrupt data can't be read from DeviceTree, error %d\n", irq);
2e494cbd89c51d1 Roman Kisel    2025-03-07  2361  		return irq;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2362  	}
2e494cbd89c51d1 Roman Kisel    2025-03-07  2363  
2e494cbd89c51d1 Roman Kisel    2025-03-07  2364  	data = irq_get_irq_data(irq);
2e494cbd89c51d1 Roman Kisel    2025-03-07  2365  	if (!data) {
2e494cbd89c51d1 Roman Kisel    2025-03-07  2366  		pr_err("No interrupt data for VMBus virq %d\n", irq);
2e494cbd89c51d1 Roman Kisel    2025-03-07  2367  		return -ENODEV;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2368  	}
2e494cbd89c51d1 Roman Kisel    2025-03-07  2369  	hwirq = irqd_to_hwirq(data);
2e494cbd89c51d1 Roman Kisel    2025-03-07  2370  
2e494cbd89c51d1 Roman Kisel    2025-03-07  2371  	vmbus_irq = irq;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2372  	vmbus_interrupt = hwirq;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2373  	pr_debug("VMBus virq %d, hwirq %d\n", vmbus_irq, vmbus_interrupt);
2e494cbd89c51d1 Roman Kisel    2025-03-07  2374  
2e494cbd89c51d1 Roman Kisel    2025-03-07  2375  	return 0;
2e494cbd89c51d1 Roman Kisel    2025-03-07  2376  }
2e494cbd89c51d1 Roman Kisel    2025-03-07  2377  

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