From: Arnd Bergmann Date: Tue, 13 Feb 2024 10:13:19 +0000 (+0100) Subject: ALSA: aw2: avoid casting function pointers X-Git-Tag: v6.9-rc1~23^2~25^2~68 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=022a13a1db302d55aad3c7c4c40d2c9392f3842b;p=linux-block.git ALSA: aw2: avoid casting function pointers clang-16 started warning about incompatible function pointers here: sound/pci/aw2/aw2-alsa.c:363:11: error: cast from 'void (*)(struct snd_pcm_substream *)' to 'snd_aw2_saa7146_it_cb' (aka 'void (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 363 | (snd_aw2_saa7146_it_cb) | ^~~~~~~~~~~~~~~~~~~~~~~ 364 | snd_pcm_period_elapsed, | ~~~~~~~~~~~~~~~~~~~~~~ sound/pci/aw2/aw2-alsa.c:392:10: error: cast from 'void (*)(struct snd_pcm_substream *)' to 'snd_aw2_saa7146_it_cb' (aka 'void (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict] 392 | (snd_aw2_saa7146_it_cb) | ^~~~~~~~~~~~~~~~~~~~~~~ 393 | snd_pcm_period_elapsed, | ~~~~~~~~~~~~~~~~~~~~~~ Add a forward declaration for struct snd_pcm_substrea to allow it to just use the correct prototype. Fixes: 98f2a97f207a ("[ALSA] Emagic Audiowerk 2 ALSA driver.") Signed-off-by: Arnd Bergmann Link: https://lore.kernel.org/r/20240213101327.460191-1-arnd@kernel.org Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/aw2/aw2-saa7146.h b/sound/pci/aw2/aw2-saa7146.h index b5c5a71c0ac3..3a3de56b9b07 100644 --- a/sound/pci/aw2/aw2-saa7146.h +++ b/sound/pci/aw2/aw2-saa7146.h @@ -19,11 +19,12 @@ #define NUM_STREAM_CAPTURE_ANA 0 -typedef void (*snd_aw2_saa7146_it_cb) (void *); +struct snd_pcm_substream; +typedef void (*snd_aw2_saa7146_it_cb) (struct snd_pcm_substream *); struct snd_aw2_saa7146_cb_param { snd_aw2_saa7146_it_cb p_it_callback; - void *p_callback_param; + struct snd_pcm_substream *p_callback_param; }; /* definition of the chip-specific record */