From ccc8480d90e8cb60f06bd90e227f34784927e19f Mon Sep 17 00:00:00 2001 From: Cristian Ciocaltea Date: Fri, 7 Feb 2025 13:46:05 +0200 Subject: [PATCH] ASoC: SOF: amd: Add branch prediction hint in ACP IRQ handler 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 Reviewed-by: Venkata Prasad Potturu Link: https://patch.msgid.link/20250207-sof-vangogh-fixes-v1-4-67824c1e4c9a@collabora.com Signed-off-by: Mark Brown --- sound/soc/sof/amd/acp-ipc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sof/amd/acp-ipc.c b/sound/soc/sof/amd/acp-ipc.c index 12caefd08788..22d4b807e1bb 100644 --- a/sound/soc/sof/amd/acp-ipc.c +++ b/sound/soc/sof/amd/acp-ipc.c @@ -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) {