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printk: nbcon: Add detailed doc for write_atomic()
authorJohn Ogness <john.ogness@linutronix.de>
Tue, 20 Aug 2024 06:29:33 +0000 (08:35 +0206)
committerPetr Mladek <pmladek@suse.com>
Wed, 21 Aug 2024 12:56:23 +0000 (14:56 +0200)
commit7d56936c1e5208b5eeea2a9a2f70e85248f6da49
tree9f7079bbe78632562ecc8308325856aab0f8be19tree | snapshot
parentb7049d88c1763d5f133b0e93e39da8e89a9f944bcommit | diff
printk: nbcon: Add detailed doc for write_atomic()

The write_atomic() callback has special requirements and is
allowed to use special helper functions. Provide detailed
documentation of the callback so that a developer has a
chance of implementing it correctly.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240820063001.36405-8-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
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