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| author | Vincent Mailhol <mailhol.vincent@wanadoo.fr> | 2021-12-14 01:02:24 +0900 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-01-05 12:09:05 +0100 |
| commit | 7d4a101c0bd3c6e5c6e45c705a54f7bc8f6c128d (patch) | |
| tree | bf77ce3f94c4ef2687d4418e78bdf094ec573506 /net/sctp/ulpqueue.c | |
| parent | c9e1d8ed304cc6106c3241add170193995953325 (diff) | |
can: dev: add sanity check in can_set_static_ctrlmode()
Previous patch removed can_priv::ctrlmode_static to replace it with
can_get_static_ctrlmode().
A condition sine qua non for this to work is that the controller
static modes should never be set in can_priv::ctrlmode_supported
(c.f. the comment on can_priv::ctrlmode_supported which states that it
is for "options that can be *modified* by netlink"). Also, this
condition is already correctly fulfilled by all existing drivers
which rely on the ctrlmode_static feature.
Nonetheless, we added an extra safeguard in can_set_static_ctrlmode()
to return an error value and to warn the developer who would be
adventurous enough to set to static a given feature that is already
set to supported.
The drivers which rely on the static controller mode are then updated
to check the return value of can_set_static_ctrlmode().
Link: https://lore.kernel.org/all/20211213160226.56219-3-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/sctp/ulpqueue.c')
0 files changed, 0 insertions, 0 deletions