diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2024-02-13 11:12:46 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2024-02-13 14:21:50 +0100 |
| commit | aabdedf4d2fe2f83cb025ae972202dcee4eb024b (patch) | |
| tree | 5a9e6dadb5ab5a629891c732b5010195fa7e4d0d /sound/pci/ctxfi/ctsrc.c | |
| parent | e129d6c9ac71e5b7d8d0ea40e63f1130534b3977 (diff) | |
| download | linux-aabdedf4d2fe2f83cb025ae972202dcee4eb024b.tar.gz linux-aabdedf4d2fe2f83cb025ae972202dcee4eb024b.tar.bz2 linux-aabdedf4d2fe2f83cb025ae972202dcee4eb024b.zip | |
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/ctsrc.c')
| -rw-r--r-- | sound/pci/ctxfi/ctsrc.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sound/pci/ctxfi/ctsrc.c b/sound/pci/ctxfi/ctsrc.c index 4a94b4708a77..159bd4008069 100644 --- a/sound/pci/ctxfi/ctsrc.c +++ b/sound/pci/ctxfi/ctsrc.c @@ -540,7 +540,7 @@ static int src_mgr_commit_write(struct src_mgr *mgr) return 0; } -int src_mgr_create(struct hw *hw, struct src_mgr **rsrc_mgr) +int src_mgr_create(struct hw *hw, void **rsrc_mgr) { int err, i; struct src_mgr *src_mgr; @@ -580,8 +580,9 @@ error1: return err; } -int src_mgr_destroy(struct src_mgr *src_mgr) +int src_mgr_destroy(void *ptr) { + struct src_mgr *src_mgr = ptr; rsc_mgr_uninit(&src_mgr->mgr); kfree(src_mgr); @@ -821,7 +822,7 @@ static int srcimp_imap_delete(struct srcimp_mgr *mgr, struct imapper *entry) return err; } -int srcimp_mgr_create(struct hw *hw, struct srcimp_mgr **rsrcimp_mgr) +int srcimp_mgr_create(struct hw *hw, void **rsrcimp_mgr) { int err; struct srcimp_mgr *srcimp_mgr; @@ -866,8 +867,9 @@ error1: return err; } -int srcimp_mgr_destroy(struct srcimp_mgr *srcimp_mgr) +int srcimp_mgr_destroy(void *ptr) { + struct srcimp_mgr *srcimp_mgr = ptr; unsigned long flags; /* free src input mapper list */ |