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| author | Moritz Fischer <mdf@kernel.org> | 2019-09-04 05:08:35 +0300 |
|---|---|---|
| committer | Moritz Fischer <mdf@kernel.org> | 2019-09-04 05:08:35 +0300 |
| commit | cbb4a74478e9eef0f8ef437e95ef7645008988f7 (patch) | |
| tree | 9fded8cad984756612a5ff0dacb1792d0cf36959 | |
| parent | e58915179f3f4a839ea3b9aeae1c1e13e98e33b1 (diff) | |
| parent | 23b6904442d08b7dbed7622ed33b236d41a3aa8b (diff) | |
| download | linux-cbb4a74478e9eef0f8ef437e95ef7645008988f7.tar.xz | |
Merge tag 'dev_groups_all_drivers' into fpga-dfl-for-5.4
dev_groups added to struct driver
Persistent tag for others to pull this branch from
This is the first patch in a longer series that adds the ability for the
driver core to create and remove a list of attribute groups
automatically when the device is bound/unbound from a specific driver.
See:
https://lore.kernel.org/r/20190731124349.4474-2-gregkh@linuxfoundation.org
for details on this patch, and examples of how to use it in other
drivers.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/base/dd.c | 14 | ||||
| -rw-r--r-- | include/linux/device.h | 3 |
2 files changed, 17 insertions, 0 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index 994a90747420..d811e60610d3 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -554,9 +554,16 @@ re_probe: goto probe_failed; } + if (device_add_groups(dev, drv->dev_groups)) { + dev_err(dev, "device_add_groups() failed\n"); + goto dev_groups_failed; + } + if (test_remove) { test_remove = false; + device_remove_groups(dev, drv->dev_groups); + if (dev->bus->remove) dev->bus->remove(dev); else if (drv->remove) @@ -584,6 +591,11 @@ re_probe: drv->bus->name, __func__, dev_name(dev), drv->name); goto done; +dev_groups_failed: + if (dev->bus->remove) + dev->bus->remove(dev); + else if (drv->remove) + drv->remove(dev); probe_failed: if (dev->bus) blocking_notifier_call_chain(&dev->bus->p->bus_notifier, @@ -1114,6 +1126,8 @@ static void __device_release_driver(struct device *dev, struct device *parent) pm_runtime_put_sync(dev); + device_remove_groups(dev, drv->dev_groups); + if (dev->bus && dev->bus->remove) dev->bus->remove(dev); else if (drv->remove) diff --git a/include/linux/device.h b/include/linux/device.h index c330b75c6c57..98c00b71b598 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -262,6 +262,8 @@ enum probe_type { * @resume: Called to bring a device from sleep mode. * @groups: Default attributes that get created by the driver core * automatically. + * @dev_groups: Additional attributes attached to device instance once the + * it is bound to the driver. * @pm: Power management operations of the device which matched * this driver. * @coredump: Called when sysfs entry is written to. The device driver @@ -296,6 +298,7 @@ struct device_driver { int (*suspend) (struct device *dev, pm_message_t state); int (*resume) (struct device *dev); const struct attribute_group **groups; + const struct attribute_group **dev_groups; const struct dev_pm_ops *pm; void (*coredump) (struct device *dev); |