diff options
Diffstat (limited to 'Documentation/driver-model/devres.txt')
| -rw-r--r-- | Documentation/driver-model/devres.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/driver-model/devres.txt b/Documentation/driver-model/devres.txt index 43681ca0837f..841c99529d27 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 --------------- @@ -254,8 +261,8 @@ 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() |