From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 7 Nov 2017 14:53:34 +0000 (+0000)
Subject: drm/i915: Silence compiler for csr_load_work_fn()
X-Git-Tag: v4.19~298^2~46^2~1187
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2f59f1b33a84447247b21be60ecf05080ce2982a;p=platform%2Fkernel%2Flinux-rpi.git

drm/i915: Silence compiler for csr_load_work_fn()

gcc-4.7 is not very smart and can not tell that "si" is guarded by size
being 0. So it complains,

drivers/gpu/drm/i915/intel_csr.c: In function ‘csr_load_work_fn’:
drivers/gpu/drm/i915/intel_csr.c:204:3: warning: ‘si’ may be used uninitialized in this function [-Wmaybe-uninitialized]
drivers/gpu/drm/i915/intel_csr.c:190:30: note: ‘si’ was declared in

Give in and mark si as NULL.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171107145334.27154-1-chris@chris-wilson.co.uk
Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Reviewed-by: Michal Wajdeczko <michal.wajdeczko@intel.com>
---

diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index 3e1f86d..77d8b3d 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -198,6 +198,7 @@ intel_get_stepping_info(struct drm_i915_private *dev_priv)
 		si = bxt_stepping_info;
 	} else {
 		size = 0;
+		si = NULL;
 	}
 
 	if (INTEL_REVID(dev_priv) < size)