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ASoC: SOF: amd: Add branch prediction hint in ACP IRQ handler

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The conditional involving sdev->first_boot in acp_sof_ipc_irq_thread()
will succeed only once, i.e. during the very first run of the
DSP firmware.

Use the unlikely() annotation to help improve branch prediction
accuracy.

Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Venkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://patch.msgid.link/20250207-sof-vangogh-fixes-v1-4-67824c1e4c9a@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cristian Ciocaltea 2025-02-07 13:46:05 +02:00 • committed by Mark Brown
parent ac84ca815a
commit ccc8480d90
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2
sound/soc/sof/amd/acp-ipc.c
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@ -165,7 +165,7 @@ irqreturn_t acp_sof_ipc_irq_thread(int irq, void *context)
int dsp_msg, dsp_ack;
unsigned int status;
if (sdev->first_boot && sdev->fw_state != SOF_FW_BOOT_COMPLETE) {
if (unlikely(sdev->first_boot && sdev->fw_state != SOF_FW_BOOT_COMPLETE)) {
acp_mailbox_read(sdev, sdev->dsp_box.offset, &status, sizeof(status));
if ((status & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {