Unverified Commit ccc8480d authored by Cristian Ciocaltea's avatar Cristian Ciocaltea Committed by Mark Brown
Browse files

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: default avatarCristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: default avatarVenkata Prasad Potturu <venkataprasad.potturu@amd.com>
Link: https://patch.msgid.link/20250207-sof-vangogh-fixes-v1-4-67824c1e4c9a@collabora.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent ac84ca81

sound/soc/sof/amd/acp-ipc.c

+1 −1
Original line number Diff line number Diff line
@@ -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) {