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
