2)kmalloc()和kzalloc()申请的内存必须调用kfree()释放。 三、devm_kfree 文件:drivers/base/devres.c,定义如下: /** * devm_kfree - Resource-managed kfree * @dev: Device this memory belongs to * @p: Memory to free * * Free memory allocated with devm_kmalloc().*/voiddevm_kfree(structde...
void devm_kfree(struct device *dev, void *p); 1. 2. In a pattern we'll see repeated below, the new functions are similar tokzalloc() and kfree() except for the new names and theaddition of the dev Note that there is no managed equivalent to kalloc(); if driverwriters cannot be ...
* devm_kfree - Resource-managed kfree * @dev: Device this memory belongs to * @p: Memory to free * * Free memory allocated with devm_kmalloc(). */voiddevm_kfree(struct device*dev,void*p){int rc;rc=devres_destroy(dev,devm_kmalloc_release,devm_kmalloc_match,p);WARN_ON(rc);}...
devm_kzalloc() is resource-managed kzalloc(). The memory allocated with resource-managed functions is associated with the device. When the device is detached from the system or the driver for the device is unloaded, that memory is freed automatically. It is possible to free the memory with de...
1)devm_kmalloc()和devm_kzalloc()是具有资源管理的kmalloc()和kzalloc()。与所属设备关联,在probe函数中使用。当设备驱动被卸载时,该内存被自动释放,也可使用devm_kfree()函数直接释放。 2)kmalloc()和kzalloc()申请的内存必须调用kfree()释放。 三、devm_kfree ...
kfree(ptr); return NULL; ``` 在函数内部,首先调用kzalloc函数来分配一段内存,并检查分配是否成功。如果内存分配失败,则返回NULL。 然后,使用devres_alloc函数来分配一个devres结构体,并检查分配是否成功。如果分配失败,则释放之前分配的内存,并返回NULL。 接下来,将devm_kfree函数设为devres结构体的release函数,以...
gpio_free(me->gpio_int);returnrc; } me->irq = gpio_to_irq(me->gpio_int);/* Save jack lookup table given via platform data */me->jack_matches = pdata->jack_matches; me->num_of_jack_matches = pdata->num_of_jack_matches;/* Save button lookup table given via platform data */...
free_gname: kfree(gname); free_map: kfree(map); return -ENOMEM; } 具体分析TODO (5)samsung_dt_free_map 该函数的代码如下: static void samsung_dt_free_map(struct pinctrl_dev *pctldev, struct pinctrl_map *map, unsigned num_maps) ...
goto free_freq_table;2 changes: 1 addition & 1 deletion 2 drivers/crypto/marvell/cesa.c Original file line numberDiff line numberDiff line change @@ -471,7 +471,7 @@ static int mv_cesa_probe(struct platform_device *pdev) sram_size = CESA_SA_MIN_SRAM_SIZE; cesa->sram_size = sra...
双等号(==) 符号检查松散相等，而三等号(===) 符号检查严格相等。不同之处在于 (==) 松散相等将...