From f1617ecf18aaf222482f683f44ab4b155976539d Mon Sep 17 00:00:00 2001 From: Peter Wang Date: Mon, 11 Aug 2025 21:11:23 +0800 Subject: [PATCH] scsi: ufs: host: mediatek: Optimize power mode change handling Optimize the power mode change process by skipping the adaptation setting toggle if the requested power mode configuration is already applied. This enhancement reduces unnecessary operations, improving efficiency during power mode transitions. Signed-off-by: Peter Wang Link: https://lore.kernel.org/r/20250811131423.3444014-8-peter.wang@mediatek.com Signed-off-by: Martin K. Petersen --- drivers/ufs/host/ufs-mediatek.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index bd6616598c33..1fb8a094d2af 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -1398,6 +1398,17 @@ static int ufs_mtk_pre_pwr_change(struct ufs_hba *hba, } } + /* if already configured to the requested pwr_mode, skip adapt */ + if (dev_req_params->gear_rx == hba->pwr_info.gear_rx && + dev_req_params->gear_tx == hba->pwr_info.gear_tx && + dev_req_params->lane_rx == hba->pwr_info.lane_rx && + dev_req_params->lane_tx == hba->pwr_info.lane_tx && + dev_req_params->pwr_rx == hba->pwr_info.pwr_rx && + dev_req_params->pwr_tx == hba->pwr_info.pwr_tx && + dev_req_params->hs_rate == hba->pwr_info.hs_rate) { + return ret; + } + if (dev_req_params->pwr_rx == FAST_MODE || dev_req_params->pwr_rx == FASTAUTO_MODE) { if (host->hw_ver.major >= 3) { -- 2.47.3