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If multiple AT24xx devices are supported and resources are allocated, then it may also be necessary to free those resource

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This commit is contained in:
Gregory Nutt 2015-11-17 08:39:06 -06:00
parent f5722bc6dd
commit e61d51dab3
2 changed files with 31 additions and 1 deletions
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19
drivers/mtd/at24xx.c
View File

@ -540,7 +540,7 @@ static int at24c_ioctl(FAR struct mtd_dev_s *dev, int cmd, unsigned long arg)
* Name: at24c_initialize * Name: at24c_initialize
* *
* Description: * Description:
* Create an initialize MTD device instance. MTD devices are not registered * Create an initialized MTD device instance. MTD devices are not registered
* in the file system, but are created as instances that can be bound to * in the file system, but are created as instances that can be bound to
* other functions (such as a block or character driver front end). * other functions (such as a block or character driver front end).
* *
@ -618,4 +618,21 @@ FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev)
return (FAR struct mtd_dev_s *)priv; return (FAR struct mtd_dev_s *)priv;
} }
/************************************************************************************
* Name: at24c_uninitialize
*
* Description:
* Release resources held by an allocated MTD device instance. Resources are only
* allocated for the case where multiple AT24xx devices are support.
*
************************************************************************************/
#ifdef CONFIG_AT24XX_MULTI
void at24c_uninitialize(FAR struct mtd_dev_s *mtd)
{
FAR struct at24c_dev_s *priv = (FAR struct at24c_dev_s *)mtd;
DEBUGASSERT(priv != NULL);
kmm_free(priv);
}
#endif /* CONFIG_AT24XX_MULTI */
#endif /* CONFIG_MTD_AT24XX */ #endif /* CONFIG_MTD_AT24XX */

13
include/nuttx/mtd/mtd.h
View File

@ -390,6 +390,19 @@ FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev,
FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev); FAR struct mtd_dev_s *at24c_initialize(FAR struct i2c_dev_s *dev);
#endif #endif
/************************************************************************************
* Name: at24c_uninitialize
*
* Description:
* Release resources held by an allocated MTD device instance. Resources are only
* allocated for the case where multiple AT24xx devices are support.
*
************************************************************************************/
#ifdef CONFIG_AT24XX_MULTI
void at24c_uninitialize(FAR struct mtd_dev_s *mtd);
#endif
/**************************************************************************** /****************************************************************************
* Name: at25_initialize * Name: at25_initialize
* *