ALSA: atmel: ac97c: use platform helpers and devm cleanup

Convert atmel_ac97c_probe() to the managed APIs. Replace the open-coded
platform_get_resource() + ioremap() with devm_platform_ioremap_resource(),
which requests and maps the AC97C register window in one call. Switch the
clock to devm_clk_get_enabled(), the card to snd_devm_card_new(), and the
interrupt to devm_request_irq(). The now-unnecessary error-path cleanup
and the manual teardown in atmel_ac97c_remove() are dropped, since devm
handles them.

platform_get_irq() was already used; tighten its error check to irq < 0.

Both resource and IRQ lookups are equivalent for a platform-backed
device. The AC97C register window is owned solely by this driver, so the
new region request cannot conflict with another claimant, and it is
mapped exactly once (no double mapping).

No functional change; built for ARM (allmodconfig + SND_ATMEL_AC97C)
with LLVM=1 and sound/atmel/ac97c.o compiles cleanly.

Assisted-by: opencode:hy3-free
Signed-off-by: Rosen Penev <rosenp@gmail.com>
Link: https://patch.msgid.link/20260721225411.815553-1-rosenp@gmail.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

0 files changed, 0 insertions, 0 deletions