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drm/i915/dsi: fix VBT send packet port selection for dual link DSI

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commit f9cdf41306 upstream.

intel_dsi->ports contains bitmask of enabled ports and correspondingly
logic for selecting port for VBT packet sending must use port specific
bitmask when deciding appropriate port.

Fixes: 08c59dde71 ("drm/i915/dsi: fix VBT send packet port selection for ICL+")
Cc: stable@vger.kernel.org
Signed-off-by: Mikko Kovanen <mikko.kovanen@aavamobile.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/DBBPR09MB466592B16885D99ABBF2393A91119@DBBPR09MB4665.eurprd09.prod.outlook.com
(cherry picked from commit 8d58bb7991)
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mikko Kovanen 2022-11-26 13:27:13 +00:00 • committed by Greg Kroah-Hartman
commit bf83a303f2
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_dsi_vbt.c
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@ -133,9 +133,9 @@ static enum port intel_dsi_seq_port_to_port(struct intel_dsi *intel_dsi,
return ffs(intel_dsi->ports) - 1;
if (seq_port) {
if (intel_dsi->ports & PORT_B)
if (intel_dsi->ports & BIT(PORT_B))
return PORT_B;
else if (intel_dsi->ports & PORT_C)
else if (intel_dsi->ports & BIT(PORT_C))
return PORT_C;
}