Messages in this thread | | | Date | Mon, 13 Jun 2022 16:15:34 +0200 | Subject | Re: [PATCH V3 1/2] mtd: allow getting MTD device associated with a specific DT node | From | Rafał Miłecki <> |
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On 13.06.2022 16:04, Miquel Raynal wrote: >> @@ -1154,6 +1154,34 @@ int __get_mtd_device(struct mtd_info *mtd) >> } >> EXPORT_SYMBOL_GPL(__get_mtd_device); >> >> +/** >> + * of_get_mtd_device_by_node - obtain an MTD device associated with a given node >> + * >> + * @np: device tree node >> + */ >> +struct mtd_info *of_get_mtd_device_by_node(struct device_node *np) > > Shall we try to use a more of-agnostic syntax or is it too complex here?
I need some extra hint, please. This is how many similar functions look like:
$ grep -E -r "(get|find).*_by_node" ./include/* ./include/drm/drm_mipi_dsi.h:struct mipi_dsi_host *of_find_mipi_dsi_host_by_node(struct device_node *node); ./include/drm/drm_mipi_dsi.h:struct mipi_dsi_device *of_find_mipi_dsi_device_by_node(struct device_node *np); ./include/linux/usb/phy.h:extern struct usb_phy *devm_usb_get_phy_by_node(struct device *dev, ./include/linux/usb/phy.h:static inline struct usb_phy *devm_usb_get_phy_by_node(struct device *dev, ./include/linux/extcon.h:struct extcon_dev *extcon_find_edev_by_node(struct device_node *node); ./include/linux/extcon.h:static inline struct extcon_dev *extcon_find_edev_by_node(struct device_node *node) ./include/linux/of_net.h:extern struct net_device *of_find_net_device_by_node(struct device_node *np); ./include/linux/of_net.h:static inline struct net_device *of_find_net_device_by_node(struct device_node *np) ./include/linux/devfreq.h:struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node); ./include/linux/devfreq.h:static inline struct devfreq *devfreq_get_devfreq_by_node(struct device_node *node) ./include/linux/of_platform.h:extern struct platform_device *of_find_device_by_node(struct device_node *np); ./include/linux/of_platform.h:static inline struct platform_device *of_find_device_by_node(struct device_node *np) ./include/linux/backlight.h:struct backlight_device *of_find_backlight_by_node(struct device_node *node); ./include/linux/backlight.h:of_find_backlight_by_node(struct device_node *node) ./include/linux/i2c.h:struct i2c_client *of_find_i2c_device_by_node(struct device_node *node); ./include/linux/i2c.h:struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node); ./include/linux/i2c.h:struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node); ./include/linux/i2c.h:static inline struct i2c_client *of_find_i2c_device_by_node(struct device_node *node) ./include/linux/i2c.h:static inline struct i2c_adapter *of_find_i2c_adapter_by_node(struct device_node *node) ./include/linux/i2c.h:static inline struct i2c_adapter *of_get_i2c_adapter_by_node(struct device_node *node)
>> +{ >> + struct mtd_info *mtd = NULL; >> + struct mtd_info *tmp; >> + int err; >> + >> + mutex_lock(&mtd_table_mutex); >> + >> + err = -ENODEV; >> + mtd_for_each_device(tmp) { >> + if (mtd_get_of_node(tmp) == np) { >> + mtd = tmp; >> + err = __get_mtd_device(mtd); >> + break; >> + } >> + } >> + >> + mutex_unlock(&mtd_table_mutex); >> + >> + return err ? ERR_PTR(err) : mtd; >> +} >> +EXPORT_SYMBOL_GPL(of_get_mtd_device_by_node); >> + >> /** >> * get_mtd_device_nm - obtain a validated handle for an MTD device by >> * device name
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