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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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cdd296cdae
Reviewing this block of code in cdv_intel_dp_init()
ret = cdv_intel_dp_aux_native_read(gma_encoder, DP_DPCD_REV, ...
cdv_intel_edp_panel_vdd_off(gma_encoder);
if (ret == 0) {
/* if this fails, presume the device is a ghost */
DRM_INFO("failed to retrieve link info, disabling eDP\n");
drm_encoder_cleanup(encoder);
cdv_intel_dp_destroy(connector);
goto err_priv;
} else {
The (ret == 0) is not strict enough.
cdv_intel_dp_aux_native_read() returns > 0 on success
otherwise it is failure.
So change to <=
Fixes:
|
||
|---|---|---|
| .. | ||
| accel_2d.c | ||
| backlight.c | ||
| blitter.c | ||
| blitter.h | ||
| cdv_device.c | ||
| cdv_device.h | ||
| cdv_intel_crt.c | ||
| cdv_intel_display.c | ||
| cdv_intel_dp.c | ||
| cdv_intel_hdmi.c | ||
| cdv_intel_lvds.c | ||
| framebuffer.c | ||
| framebuffer.h | ||
| gem.c | ||
| gem.h | ||
| gma_device.c | ||
| gma_device.h | ||
| gma_display.c | ||
| gma_display.h | ||
| gtt.c | ||
| gtt.h | ||
| intel_bios.c | ||
| intel_bios.h | ||
| intel_gmbus.c | ||
| intel_i2c.c | ||
| Kconfig | ||
| Makefile | ||
| mdfld_device.c | ||
| mdfld_dsi_dpi.c | ||
| mdfld_dsi_dpi.h | ||
| mdfld_dsi_output.c | ||
| mdfld_dsi_output.h | ||
| mdfld_dsi_pkg_sender.c | ||
| mdfld_dsi_pkg_sender.h | ||
| mdfld_intel_display.c | ||
| mdfld_output.c | ||
| mdfld_output.h | ||
| mdfld_tmd_vid.c | ||
| mdfld_tpo_vid.c | ||
| mid_bios.c | ||
| mid_bios.h | ||
| mmu.c | ||
| mmu.h | ||
| oaktrail.h | ||
| oaktrail_crtc.c | ||
| oaktrail_device.c | ||
| oaktrail_hdmi.c | ||
| oaktrail_hdmi_i2c.c | ||
| oaktrail_lvds.c | ||
| oaktrail_lvds_i2c.c | ||
| opregion.c | ||
| opregion.h | ||
| power.c | ||
| power.h | ||
| psb_device.c | ||
| psb_device.h | ||
| psb_drv.c | ||
| psb_drv.h | ||
| psb_intel_display.c | ||
| psb_intel_drv.h | ||
| psb_intel_lvds.c | ||
| psb_intel_modes.c | ||
| psb_intel_reg.h | ||
| psb_intel_sdvo.c | ||
| psb_intel_sdvo_regs.h | ||
| psb_irq.c | ||
| psb_irq.h | ||
| psb_lid.c | ||
| psb_reg.h | ||
| tc35876x-dsi-lvds.c | ||
| tc35876x-dsi-lvds.h | ||