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20ea6adbf1
Build system: x86_64 Build-tested: bcm2708, bcm2709, bcm2710, bcm2711 Run-tested: bcm2708/RPiB+, bcm2709/RPi3B, bcm2710/RPi3B, bcm2711/RPi4B Signed-off-by: Marty Jones <mj8263788@gmail.com> Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 067cebf5a6624a8613ac407efc72f80060ab4efb Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Fri, 25 Mar 2022 15:48:48 +0100
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Subject: [PATCH] drm/vc4: kms: Warn if clk_set_min_rate fails
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We currently ignore the clk_set_min_rate return code assuming it would
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succeed. However, it can fail if we ask for a rate higher than the
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current maximum for example.
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Since we can't fail in atomic_commit, at least warn on failure.
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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drivers/gpu/drm/vc4/vc4_kms.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/gpu/drm/vc4/vc4_kms.c
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+++ b/drivers/gpu/drm/vc4/vc4_kms.c
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@@ -400,7 +400,7 @@ static void vc4_atomic_commit_tail(struc
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unsigned long core_rate = max_t(unsigned long,
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500000000, state_rate);
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- clk_set_min_rate(hvs->core_clk, core_rate);
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+ WARN_ON(clk_set_min_rate(hvs->core_clk, core_rate));
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}
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drm_atomic_helper_commit_modeset_disables(dev, state);
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@@ -430,7 +430,7 @@ static void vc4_atomic_commit_tail(struc
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drm_dbg(dev, "Running the core clock at %lu Hz\n",
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new_hvs_state->core_clock_rate);
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- clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate);
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+ WARN_ON(clk_set_min_rate(hvs->core_clk, new_hvs_state->core_clock_rate));
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drm_dbg(dev, "Core clock actual rate: %lu Hz\n",
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clk_get_rate(hvs->core_clk));
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