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drm/i915/crt: Silence compiler warning for uninitialised status 

clang is confused by our if-else-chain that abruptly exits before a
final else:

drivers/gpu/drm/i915/intel_crt.c:821:11: warning: variable 'status' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
        else if (ret < 0)
                 ^~~~~~~
drivers/gpu/drm/i915/intel_crt.c:826:9: note: uninitialized use occurs here
        return status;
               ^~~~~~
drivers/gpu/drm/i915/intel_crt.c:821:7: note: remove the 'if' if its condition is always true
        else if (ret < 0)
             ^~~~~~~~~~~~
drivers/gpu/drm/i915/intel_crt.c:761:12: note: initialize the variable 'status' to silence this warning
        int status, ret;

In this case, we can reduce the final else-if clause to an unconditional
else.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180208163939.27030-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2018-02-08 16:39:39 +00:00
parent f0fa739a34
commit 2927e4211f
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/intel_crt.c
View File

@ -810,10 +810,11 @@ intel_crt_detect(struct drm_connector *connector,
else
status = connector_status_unknown;
intel_release_load_detect_pipe(connector, &tmp, ctx);
} else if (ret == 0)
} else if (ret == 0) {
status = connector_status_unknown;
else if (ret < 0)
} else {
status = ret;
}
out:
intel_display_power_put(dev_priv, intel_encoder->power_domain);