[PATCH 6.19 264/781] drm/msm/dsi_phy_14nm: convert from divider_round_rate() to divider_determine_rate()

Greg Kroah-Hartman
2026-02-25T01:31:42Z

From: Brian Masney <bmasney@redhat.com>

[ Upstream commit 1d232f793d4dbffd329ad48b52954d4c8ca24db5 ]

The divider_round_rate() function is now deprecated, so let's migrate
to divider_determine_rate() instead so that this deprecated API can be
removed.

Note that when the main function itself was migrated to use
determine_rate, this was mistakenly converted to:

req->rate = divider_round_rate(...)

This is invalid in the case when an error occurs since it can set the
rate to a negative value.

Fixes: cc41f29a6b04 ("drm/msm/dsi_phy_14nm: convert from round_rate() to determine_rate()")
Signed-off-by: Brian Masney <bmasney@redhat.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/697613/
Link: https://lore.kernel.org/r/20260108-clk-divider-round-rate-v1-24-535a3ed73bf3@redhat.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
index fdefcbd9c2848..a156c7e7cea83 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c
@@ -628,12 +628,7 @@ static int dsi_pll_14nm_postdiv_determine_rate(struct clk_hw *hw,

DBG("DSI%d PLL parent rate=%lu", pll_14nm->phy->id, req->rate);

- req->rate = divider_round_rate(hw, req->rate, &req->best_parent_rate,
- NULL,
- postdiv->width,
- postdiv->flags);
-
- return 0;
+ return divider_determine_rate(hw, req, NULL, postdiv->width, postdiv->flags);
}

static int dsi_pll_14nm_postdiv_set_rate(struct clk_hw *hw, unsigned long rate,
--
2.51.0