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Documentation: mailbox: mbox_chan_ops.flush() is optional

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When the optional .flush() method was added to the mbox_chan structure,
the documentation was not updated.

Fixes: a8803d7421 ("mailbox: Support blocking transfers in atomic context")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <6a50a5d4f0d0da26e5cccf348550879e53792e6e.1764861174.git.geert+renesas@glider.be>
This commit is contained in:
Geert Uytterhoeven 2025-12-04 16:14:02 +01:00 • committed by Jonathan Corbet
parent 7508b208f1
commit 135739a2a9
1 changed files with 1 additions and 1 deletions
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2
Documentation/driver-api/mailbox.rst
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@ -27,7 +27,7 @@ Controller Driver (See include/linux/mailbox_controller.h)
Allocate mbox_controller and the array of mbox_chan.
Populate mbox_chan_ops, except peek_data() all are mandatory.
Populate mbox_chan_ops, except flush() and peek_data() all are mandatory.
The controller driver might know a message has been consumed
by the remote by getting an IRQ or polling some hardware flag
or it can never know (the client knows by way of the protocol).