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ASoC: renesas: fsi: Fix register access from in-flight IRQ after shutdown

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In-flight IRQs may still be running when the SPU clock is disabled,
leading to register access after shutdown and causing system hangs.

Fix this to use fsi_stream_is_working() when handling in-flight IRQ
handlers. If no streams are active, the handler now returns immediately
to prevent hardware access.

Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Suggested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260609113836.45079-6-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
bui duc phuc 2026-06-09 18:38:30 +07:00 committed by Mark Brown
parent c9e05e2fa0
commit e813df3ef5
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1 changed files with 8 additions and 0 deletions
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8
sound/soc/renesas/fsi.c
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@ -470,6 +470,10 @@ static int fsi_get_current_fifo_samples(struct fsi_priv *fsi,
static void fsi_count_fifo_err(struct fsi_priv *fsi)
{
if (!fsi_stream_is_working(fsi, &fsi->playback) &&
!fsi_stream_is_working(fsi, &fsi->capture))
return;
u32 ostatus = fsi_reg_read(fsi, DOFF_ST);
u32 istatus = fsi_reg_read(fsi, DIFF_ST);
@ -681,6 +685,10 @@ static void fsi_irq_clear_status(struct fsi_priv *fsi)
u32 data = 0;
struct fsi_master *master = fsi_get_master(fsi);
if (!fsi_stream_is_working(fsi, &fsi->playback) &&
!fsi_stream_is_working(fsi, &fsi->capture))
return;
data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->playback));
data |= AB_IO(1, fsi_get_port_shift(fsi, &fsi->capture));