diff options
Diffstat (limited to 'Documentation/driver-model/devres.txt')
| -rw-r--r-- | Documentation/driver-model/devres.txt | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt index 43681ca0837f..d7d6f01e81ff 100644 --- a/Documentation/driver-model/devres.txt +++ b/Documentation/driver-model/devres.txt @@ -132,6 +132,13 @@ devres. Complexity is shifted from less maintained low level drivers to better maintained higher layer. Also, as init failure path is shared with exit path, both can get more testing. +Note though that when converting current calls or assignments to +managed devm_* versions it is up to you to check if internal operations +like allocating memory, have failed. Managed resources pertains to the +freeing of these resources *only* - all other checks needed are still +on you. In some cases this may mean introducing checks that were not +necessary before moving to the managed devm_* calls. + 3. Devres group --------------- @@ -235,15 +242,16 @@ certainly invest a bit more effort into libata core layer). CLOCK devm_clk_get() + devm_clk_get_optional() devm_clk_put() devm_clk_hw_register() devm_of_clk_add_hw_provider() + devm_clk_hw_register_clkdev() DMA dmaenginem_async_device_register() dmam_alloc_coherent() dmam_alloc_attrs() - dmam_declare_coherent_memory() dmam_free_coherent() dmam_pool_create() dmam_pool_destroy() @@ -254,8 +262,8 @@ GPIO devm_gpiod_get_index_optional() devm_gpiod_get_optional() devm_gpiod_put() + devm_gpiod_unhinge() devm_gpiochip_add_data() - devm_gpiochip_remove() devm_gpio_request() devm_gpio_request_one() devm_gpio_free() |