linux-kernel - [PATCH 5.10 141/152] drm/i915/icl: Fix initing the DSI DSC power refcount during HW readout

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Date:   Mon, 18 Jan 2021 12:35:16 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Vandita Kulkarni <vandita.kulkarni@...el.com>,
        Jani Nikula <jani.nikula@...el.com>,
        Imre Deak <imre.deak@...el.com>,
        Anshuman Gupta <anshuman.gupta@...el.com>
Subject: [PATCH 5.10 141/152] drm/i915/icl: Fix initing the DSI DSC power refcount during HW readout

From: Imre Deak <imre.deak@...el.com>

commit 2af5268180410b874fc06be91a1b2fbb22b1be0c upstream.

For an enabled DSC during HW readout the corresponding power reference
is taken along the CRTC power domain references in
get_crtc_power_domains(). Remove the incorrect get ref from the DSI
encoder hook.

Fixes: 2b68392e638d ("drm/i915/dsi: add support for DSC")
Cc: Vandita Kulkarni <vandita.kulkarni@...el.com>
Cc: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Imre Deak <imre.deak@...el.com>
Reviewed-by: Anshuman Gupta <anshuman.gupta@...el.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201209153952.3397959-1-imre.deak@intel.com
(cherry picked from commit 3a9ec563a4ff770ae647f6ee539810f1866866c9)
Signed-off-by: Jani Nikula <jani.nikula@...el.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/gpu/drm/i915/display/icl_dsi.c |    4 ----
 1 file changed, 4 deletions(-)

--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1585,10 +1585,6 @@ static void gen11_dsi_get_power_domains(
 
 	get_dsi_io_power_domains(i915,
 				 enc_to_intel_dsi(encoder));
-
-	if (crtc_state->dsc.compression_enable)
-		intel_display_power_get(i915,
-					intel_dsc_power_domain(crtc_state));
 }
 
 static bool gen11_dsi_get_hw_state(struct intel_encoder *encoder,