drm/i915/dsi: be defensive about out of bounds sequence id
Untie the VBT based generic panel driver from the VBT parsing, so that the two don't have to be updated in lockstep. Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Jani Nikula <jani.nikula@intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/7a6e3e7c4404c0e4dbcf003acd8737a6ecbe218f.1450702954.git.jani.nikula@intel.com
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@ -246,14 +246,21 @@ static const fn_mipi_elem_exec exec_elem[] = {
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*/
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static const char * const seq_name[] = {
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"UNDEFINED",
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"MIPI_SEQ_ASSERT_RESET",
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"MIPI_SEQ_INIT_OTP",
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"MIPI_SEQ_DISPLAY_ON",
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"MIPI_SEQ_DISPLAY_OFF",
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"MIPI_SEQ_DEASSERT_RESET"
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[MIPI_SEQ_ASSERT_RESET] = "MIPI_SEQ_ASSERT_RESET",
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[MIPI_SEQ_INIT_OTP] = "MIPI_SEQ_INIT_OTP",
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[MIPI_SEQ_DISPLAY_ON] = "MIPI_SEQ_DISPLAY_ON",
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[MIPI_SEQ_DISPLAY_OFF] = "MIPI_SEQ_DISPLAY_OFF",
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[MIPI_SEQ_DEASSERT_RESET] = "MIPI_SEQ_DEASSERT_RESET",
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};
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static const char *sequence_name(enum mipi_seq seq_id)
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{
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if (seq_id < ARRAY_SIZE(seq_name) && seq_name[seq_id])
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return seq_name[seq_id];
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else
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return "(unknown)";
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}
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static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
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{
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fn_mipi_elem_exec mipi_elem_exec;
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@ -262,7 +269,8 @@ static void generic_exec_sequence(struct intel_dsi *intel_dsi, const u8 *data)
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if (!data)
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return;
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DRM_DEBUG_DRIVER("Starting MIPI sequence - %s\n", seq_name[*data]);
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DRM_DEBUG_DRIVER("Starting MIPI sequence %u - %s\n",
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*data, sequence_name(*data));
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/* go to the first element of the sequence */
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data++;
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