| Message ID | 20240315184908.500352-5-ayushdevel1325@gmail.com |
|---|---|
| State | New |
| Headers | show |
| Series | misc: Add mikroBUS driver | expand |
On 15/03/2024 19:49, Ayush Singh wrote: > From: Vaishnav M A <vaishnav@beagleboard.org> > > add of_find_serdev_controller_by_node to obtain a > serdev_controller from the device_node, which > can help if the serdev_device is not described > over device tree and instantiation of the device > happens from a different driver, for the same purpose > an option to not delete an empty serdev controller > is added. Don't make it difficult for us to read your commit msgs. Please wrap commit message according to Linux coding style / submission process (neither too early nor over the limit): https://elixir.bootlin.com/linux/v6.4-rc1/source/Documentation/process/submitting-patches.rst#L597 > > Signed-off-by: Vaishnav M A <vaishnav@beagleboard.org> > Signed-off-by: Ayush Singh <ayushdevel1325@gmail.com> > --- > drivers/tty/serdev/core.c | 19 +++++++++++++++++++ > include/linux/serdev.h | 4 ++++ > 2 files changed, 23 insertions(+) > > diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c > index 613cb356b918..5b5b3f2b2e42 100644 > --- a/drivers/tty/serdev/core.c > +++ b/drivers/tty/serdev/core.c > @@ -555,6 +555,19 @@ static int of_serdev_register_devices(struct serdev_controller *ctrl) > return 0; > } > > +#if defined(CONFIG_OF) > +struct serdev_controller *of_find_serdev_controller_by_node(struct device_node *node) > +{ > + struct device *dev = bus_find_device_by_of_node(&serdev_bus_type, node); > + > + if (!dev) > + return NULL; > + > + return (dev->type == &serdev_ctrl_type) ? to_serdev_controller(dev) : NULL; > +} > +EXPORT_SYMBOL_GPL(of_find_serdev_controller_by_node); > +#endif > + > #ifdef CONFIG_ACPI > > #define SERDEV_ACPI_MAX_SCAN_DEPTH 32 > @@ -785,6 +798,12 @@ int serdev_controller_add(struct serdev_controller *ctrl) > > pm_runtime_enable(&ctrl->dev); > > + /* provide option to not delete a serdev controller without devices > + * if property is present > + */ > + if (device_property_present(&ctrl->dev, "force-empty-serdev-controller")) How is this related to topic of adding helper? Why are you adding some undocumented properties? No, it's the same in other patches - you combine unrelated goals into one patch. Please read carefully submitting patches document how to organize your patchset. Best regards, Krzysztof
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c index 613cb356b918..5b5b3f2b2e42 100644 --- a/drivers/tty/serdev/core.c +++ b/drivers/tty/serdev/core.c @@ -555,6 +555,19 @@ static int of_serdev_register_devices(struct serdev_controller *ctrl) return 0; } +#if defined(CONFIG_OF) +struct serdev_controller *of_find_serdev_controller_by_node(struct device_node *node) +{ + struct device *dev = bus_find_device_by_of_node(&serdev_bus_type, node); + + if (!dev) + return NULL; + + return (dev->type == &serdev_ctrl_type) ? to_serdev_controller(dev) : NULL; +} +EXPORT_SYMBOL_GPL(of_find_serdev_controller_by_node); +#endif + #ifdef CONFIG_ACPI #define SERDEV_ACPI_MAX_SCAN_DEPTH 32 @@ -785,6 +798,12 @@ int serdev_controller_add(struct serdev_controller *ctrl) pm_runtime_enable(&ctrl->dev); + /* provide option to not delete a serdev controller without devices + * if property is present + */ + if (device_property_present(&ctrl->dev, "force-empty-serdev-controller")) + return 0; + ret_of = of_serdev_register_devices(ctrl); ret_acpi = acpi_serdev_register_devices(ctrl); if (ret_of && ret_acpi) { diff --git a/include/linux/serdev.h b/include/linux/serdev.h index ff78efc1f60d..287d7b9bc10a 100644 --- a/include/linux/serdev.h +++ b/include/linux/serdev.h @@ -117,6 +117,10 @@ static inline struct serdev_controller *to_serdev_controller(struct device *d) return container_of(d, struct serdev_controller, dev); } +#if defined(CONFIG_OF) +struct serdev_controller *of_find_serdev_controller_by_node(struct device_node *node); +#endif + static inline void *serdev_device_get_drvdata(const struct serdev_device *serdev) { return dev_get_drvdata(&serdev->dev);