Messages in this thread Patch in this message | | | From | Chris Wilson <> | Subject | [PATCH] drm/i915/sdvo: Reorder i2c initialisation before ddc proxy | Date | Tue, 17 May 2011 14:03:50 +0100 |
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The ddc proxy depends upon the underlying i2c bus being selected. Under certain configurations, the i2c-adapter functionality is queried during initialisation and so may trigger an OOPS during boot. Hence, we need to reorder the initialisation of the ddc proxy until after we hook up the i2c adapter for the SDVO device.
Reported-by: Mihai Moldovan <ionic@ionic.de> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> --- drivers/gpu/drm/i915/intel_sdvo.c | 10 ++++------ 1 files changed, 4 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_sdvo.c b/drivers/gpu/drm/i915/intel_sdvo.c index 4324f33..754086f 100644 --- a/drivers/gpu/drm/i915/intel_sdvo.c +++ b/drivers/gpu/drm/i915/intel_sdvo.c @@ -2544,21 +2544,19 @@ bool intel_sdvo_init(struct drm_device *dev, int sdvo_reg) if (!intel_sdvo) return false; + intel_sdvo->sdvo_reg = sdvo_reg; + intel_sdvo->slave_addr = intel_sdvo_get_slave_addr(dev, sdvo_reg) >> 1; + intel_sdvo_select_i2c_bus(dev_priv, intel_sdvo, sdvo_reg); if (!intel_sdvo_init_ddc_proxy(intel_sdvo, dev)) { kfree(intel_sdvo); return false; } - intel_sdvo->sdvo_reg = sdvo_reg; - + /* encoder type will be decided later */ intel_encoder = &intel_sdvo->base; intel_encoder->type = INTEL_OUTPUT_SDVO; - /* encoder type will be decided later */ drm_encoder_init(dev, &intel_encoder->base, &intel_sdvo_enc_funcs, 0); - intel_sdvo->slave_addr = intel_sdvo_get_slave_addr(dev, sdvo_reg) >> 1; - intel_sdvo_select_i2c_bus(dev_priv, intel_sdvo, sdvo_reg); - /* Read the regs to test if we can talk to the device */ for (i = 0; i < 0x40; i++) { u8 byte; -- 1.7.5.1
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