int devm_request_irq(struct device *dev, unsigned int irq, irq_handler_t handler, unsigned long irqflags, const char *devname, void *dev_id); void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id); For these functions, the addition of astruct deviceargument wasrequired...
Use devm_request_irq to simplify error handling path, when probe smmu device. Also devm_{request|free}_irq when init or destroy domain context. Signed-off-by: Peng Fan <van.free...@gmail.com> Cc: Will Deacon <will.dea...@arm.com> Cc: Robin Murphy <robin.mur...@arm.com> --- ...
IRQdevm_request_irq()devm_free_irq() DMAdmam_alloc_coherent()dmam_free_coherent()dmam_alloc_noncoherent()dmam_free_noncoherent()dmam_declare_coherent_memory()dmam_pool_create()dmam_pool_destroy() PCIpcim_enable_device() : after success, all PCI ops become managedpcim_pin_device() : keep ...
devm_request_irq() devm_free_irq() DMA dmam_alloc_coherent() dmam_free_coherent() dmam_alloc_noncoherent() dmam_free_noncoherent() dmam_declare_coherent_memory() dmam_pool_create() dmam_pool_destroy() PCI pcim_enable_device() : after success, all PCI ops become managed pcim_pin_device...
在这个示例中,使用devm_request_irq时无需手动调用free_irq,而使用request_irq时则需要在适当的时候调用free_irq来释放中断资源。 希望这些信息能帮助你更好地理解devm_request_irq和request_irq之间的区别。如果你有任何进一步的问题,请随时告诉我。
int devm_request_irq(struct device *dev, unsigned int irq, irq_handler_t handler, unsigned long irqflags, const char *devname, void *dev_id); void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id); 1. 2.
() IRQ devm_request_irq() devm_free_irq() DMA dmam_alloc_coherent() dmam_free_coherent() dmam_alloc_noncoherent() dmam_free_noncoherent() dmam_declare_coherent_memory() dmam_pool_create() dmam_pool_destroy() PCI pcim_enable_device() : after success, all PCI ops become managed pcim_...
linux devm_request_irq 引发BUG sleeping function called from invalid context问题,程序员大本营,技术文章内容聚合第一站。
irq, ret); @@ -311,8 +312,6 @@ static int wm831x_gp_ldo_remove(struct platform_device *pdev) { struct wm831x_ldo *ldo = platform_get_drvdata(pdev); - free_irq(wm831x_irq(ldo->wm831x, - platform_get_irq_byname(pdev, "UV")), ldo); ...
IRQdevm_request_irq()devm_free_irq() DMAdmam_alloc_coherent()dmam_free_coherent()dmam_alloc_noncoherent()dmam_free_noncoherent()dmam_declare_coherent_memory()dmam_pool_create()dmam_pool_destroy() PCIpcim_enable_device() : after success, all PCI ops become managedpcim_pin_device() : keep...