Rodrigo Vivi <[email protected]> writes:
> On Thu, Jun 03, 2021 at 03:07:54PM -0700, Manasi Navare wrote:
>> Static analysis identified an issue in skl_crtc_allocate_ddb where
>> mbus_offset may be used uninitialized.
>> This patch fixes it.
>
> I'm sorry, but I really cannot see what this tool is seeing...
> I even tried to look to our internal branch to see if it was an issue
> there.
> But I'm failing to see how it is possible...
It is in the goto out; path.
-Mika
>
>>
>> Fixes: 835c176cb1c4 ("drm/i915: Introduce MBUS relative dbuf offsets")
>> Cc: Ville Syrjälä <[email protected]>
>> Signed-off-by: Manasi Navare <[email protected]>
>> ---
>> drivers/gpu/drm/i915/intel_pm.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/i915/intel_pm.c
>> b/drivers/gpu/drm/i915/intel_pm.c
>> index 00f3dead20ad..a385b8b7414f 100644
>> --- a/drivers/gpu/drm/i915/intel_pm.c
>> +++ b/drivers/gpu/drm/i915/intel_pm.c
>> @@ -4163,7 +4163,7 @@ skl_crtc_allocate_ddb(struct intel_atomic_state
>> *state, struct intel_crtc *crtc)
>> struct intel_crtc_state *crtc_state;
>> struct skl_ddb_entry ddb_slices;
>> enum pipe pipe = crtc->pipe;
>> - unsigned int mbus_offset;
>> + unsigned int mbus_offset = 0;
>> u32 ddb_range_size;
>> u32 dbuf_slice_mask;
>> u32 start, end;
>> --
>> 2.19.1
>>
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