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| author | Arnd Bergmann <arnd@arndb.de> | 2024-02-13 13:12:46 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-13 16:21:50 +0300 |
| commit | aabdedf4d2fe2f83cb025ae972202dcee4eb024b (patch) | |
| tree | 5a9e6dadb5ab5a629891c732b5010195fa7e4d0d /sound/pci/ctxfi/ctatc.c | |
| parent | e129d6c9ac71e5b7d8d0ea40e63f1130534b3977 (diff) | |
| download | linux-aabdedf4d2fe2f83cb025ae972202dcee4eb024b.tar.xz | |
ALSA: ctxfi: avoid casting function pointers
This driver creates an abstraction for different components by casting function
pointers to slightly incompatible types for each one to get the correct
argument even when the caller does not know those types. This is a
bit unreliable and not allowed in combination with control flow integrity
(KCFI):
sound/pci/ctxfi/ctatc.c:115:25: error: cast from 'int (*)(struct hw *, struct src_mgr **)' to 'create_t' (aka 'int (*)(struct hw *, void **)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
115 | [SRC] = { .create = (create_t)src_mgr_create,
| ^~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:116:20: error: cast from 'int (*)(struct src_mgr *)' to 'destroy_t' (aka 'int (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
116 | .destroy = (destroy_t)src_mgr_destroy },
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:117:27: error: cast from 'int (*)(struct hw *, struct srcimp_mgr **)' to 'create_t' (aka 'int (*)(struct hw *, void **)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
117 | [SRCIMP] = { .create = (create_t)srcimp_mgr_create,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/pci/ctxfi/ctatc.c:118:20: error: cast from 'int (*)(struct srcimp_mgr *)' to 'destroy_t' (aka 'int (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
118 | .destroy = (destroy_t)srcimp_mgr_destroy },
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Change these to always pass void pointers and move the abstraction one level
down.
Fixes: 8cc72361481f ("ALSA: SB X-Fi driver merge")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20240213101303.460008-1-arnd@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ctxfi/ctatc.c')
| -rw-r--r-- | sound/pci/ctxfi/ctatc.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/sound/pci/ctxfi/ctatc.c b/sound/pci/ctxfi/ctatc.c index fbdb8a3d5b8e..2a3e9d8ba7db 100644 --- a/sound/pci/ctxfi/ctatc.c +++ b/sound/pci/ctxfi/ctatc.c @@ -105,23 +105,20 @@ static struct { .public_name = "Mixer"} }; -typedef int (*create_t)(struct hw *, void **); -typedef int (*destroy_t)(void *); - static struct { int (*create)(struct hw *hw, void **rmgr); int (*destroy)(void *mgr); } rsc_mgr_funcs[NUM_RSCTYP] = { - [SRC] = { .create = (create_t)src_mgr_create, - .destroy = (destroy_t)src_mgr_destroy }, - [SRCIMP] = { .create = (create_t)srcimp_mgr_create, - .destroy = (destroy_t)srcimp_mgr_destroy }, - [AMIXER] = { .create = (create_t)amixer_mgr_create, - .destroy = (destroy_t)amixer_mgr_destroy }, - [SUM] = { .create = (create_t)sum_mgr_create, - .destroy = (destroy_t)sum_mgr_destroy }, - [DAIO] = { .create = (create_t)daio_mgr_create, - .destroy = (destroy_t)daio_mgr_destroy } + [SRC] = { .create = src_mgr_create, + .destroy = src_mgr_destroy }, + [SRCIMP] = { .create = srcimp_mgr_create, + .destroy = srcimp_mgr_destroy }, + [AMIXER] = { .create = amixer_mgr_create, + .destroy = amixer_mgr_destroy }, + [SUM] = { .create = sum_mgr_create, + .destroy = sum_mgr_destroy }, + [DAIO] = { .create = daio_mgr_create, + .destroy = daio_mgr_destroy } }; static int |