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32 lines
1020 B
Diff
32 lines
1020 B
Diff
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From cdbebb3a92aca7327c88c6dc6ef5d4cd470d49fc Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Thu, 23 Feb 2023 19:44:32 +0100
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Subject: [PATCH] drm/vc4: hdmi: Warn if writing to an unknown HDMI register
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The VC4 HDMI driver has a bunch of accessors to read from a register.
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The read accessor was warning when accessing an unknown register, but
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the write one was just returning silently.
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Let's make sure we warn also when writing to an unknown register.
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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_hdmi_regs.h | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
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+++ b/drivers/gpu/drm/vc4/vc4_hdmi_regs.h
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@@ -498,8 +498,11 @@ static inline void vc4_hdmi_write(struct
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field = &variant->registers[reg];
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base = __vc4_hdmi_get_field_base(hdmi, field->reg);
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- if (!base)
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+ if (!base) {
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+ dev_warn(&hdmi->pdev->dev,
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+ "Unknown register ID %u\n", reg);
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return;
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+ }
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writel(value, base + field->offset);
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}
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