target/linux/bcm27xx/patches-5.15/950-0440-clk-Always-clamp-the-rounded-rate.patch

   1 From 5efe54b26d470785883bec0264d8d5e145715038 Mon Sep 17 00:00:00 2001
   2 From: Maxime Ripard <maxime@cerno.tech>
   3 Date: Wed, 5 May 2021 15:35:34 +0200
   4 Subject: [PATCH] clk: Always clamp the rounded rate
   5
   6 The current core while setting the min and max rate properly in the
   7 clk_request structure will not make sure that the requested rate is
   8 within these boundaries, leaving it to each and every driver to make
   9 sure it is.
  10
  11 Add a clamp call to make sure it's always done.
  12
  13 Signed-off-by: Maxime Ripard <maxime@cerno.tech>
  14 ---
  15  drivers/clk/clk.c | 2 ++
  16  1 file changed, 2 insertions(+)
  17
  18 --- a/drivers/clk/clk.c
  19 +++ b/drivers/clk/clk.c
  20 @@ -1347,6 +1347,8 @@ static int clk_core_determine_round_nolo
  21         if (!core)
  22                 return 0;
  23
  24 +       req->rate = clamp(req->rate, req->min_rate, req->max_rate);
  25 +
  26         /*
  27          * At this point, core protection will be disabled
  28          * - if the provider is not protected at all