diff options
| author | Rob Herring <robh@kernel.org> | 2022-02-24 01:52:56 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-03-18 16:27:26 +0300 |
| commit | 9ad307213fa4081f4bc2f2daa31d4f2d35d7a213 (patch) | |
| tree | cb9a8558871923771c992692a1f06bc03c44d713 /drivers/base/dd.c | |
| parent | 5bff9632b538d63f61f1c4bba891a8f09f254369 (diff) | |
| download | linux-9ad307213fa4081f4bc2f2daa31d4f2d35d7a213.tar.xz | |
driver core: Refactor multiple copies of device cleanup
There are 3 copies of the same device cleanup code used for probe failure,
testing re-probing, and device unbinding. Changes to this code often miss
at least one of the copies of the code. See commits d0243bbd5dd3 ("drivers
core: Free dma_range_map when driver probe failed") and d8f7a5484f21
("driver core: Free DMA range map when device is released") for example.
Let's refactor the code to its own function.
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20220223225257.1681968-2-robh@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/dd.c')
| -rw-r--r-- | drivers/base/dd.c | 46 |
1 files changed, 16 insertions, 30 deletions
diff --git a/drivers/base/dd.c b/drivers/base/dd.c index ce30f34e7944..86e230973010 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -506,6 +506,19 @@ static ssize_t state_synced_show(struct device *dev, } static DEVICE_ATTR_RO(state_synced); +static void device_unbind_cleanup(struct device *dev) +{ + devres_release_all(dev); + arch_teardown_dma_ops(dev); + kfree(dev->dma_range_map); + dev->dma_range_map = NULL; + dev->driver = NULL; + dev_set_drvdata(dev, NULL); + if (dev->pm_domain && dev->pm_domain->dismiss) + dev->pm_domain->dismiss(dev); + pm_runtime_reinit(dev); + dev_pm_set_driver_flags(dev, 0); +} static int call_driver_probe(struct device *dev, struct device_driver *drv) { @@ -628,16 +641,8 @@ re_probe: else if (drv->remove) drv->remove(dev); - devres_release_all(dev); - arch_teardown_dma_ops(dev); - kfree(dev->dma_range_map); - dev->dma_range_map = NULL; driver_sysfs_remove(dev); - dev->driver = NULL; - dev_set_drvdata(dev, NULL); - if (dev->pm_domain && dev->pm_domain->dismiss) - dev->pm_domain->dismiss(dev); - pm_runtime_reinit(dev); + device_unbind_cleanup(dev); goto re_probe; } @@ -667,16 +672,7 @@ sysfs_failed: BUS_NOTIFY_DRIVER_NOT_BOUND, dev); pinctrl_bind_failed: device_links_no_driver(dev); - devres_release_all(dev); - arch_teardown_dma_ops(dev); - kfree(dev->dma_range_map); - dev->dma_range_map = NULL; - dev->driver = NULL; - dev_set_drvdata(dev, NULL); - if (dev->pm_domain && dev->pm_domain->dismiss) - dev->pm_domain->dismiss(dev); - pm_runtime_reinit(dev); - dev_pm_set_driver_flags(dev, 0); + device_unbind_cleanup(dev); done: return ret; } @@ -1209,17 +1205,7 @@ static void __device_release_driver(struct device *dev, struct device *parent) drv->remove(dev); device_links_driver_cleanup(dev); - - devres_release_all(dev); - arch_teardown_dma_ops(dev); - kfree(dev->dma_range_map); - dev->dma_range_map = NULL; - dev->driver = NULL; - dev_set_drvdata(dev, NULL); - if (dev->pm_domain && dev->pm_domain->dismiss) - dev->pm_domain->dismiss(dev); - pm_runtime_reinit(dev); - dev_pm_set_driver_flags(dev, 0); + device_unbind_cleanup(dev); klist_remove(&dev->p->knode_driver); device_pm_check_callbacks(dev); |