Two warnings are produced by gcc (tested with gcc 6.2.1):
drivers/gpu/drm/i915/intel_csr.c: In function ‘csr_load_work_fn’:
drivers/gpu/drm/i915/intel_csr.c:400:5: error: ‘fw’ is used
uninitialized in this function [-Werror=uninitialized]
if (fw)
^
and
In file included from drivers/gpu/drm/i915/i915_drv.h:47:0,
from drivers/gpu/drm/i915/intel_guc_loader.c:30:
drivers/gpu/drm/i915/intel_guc_loader.c: In function ‘intel_guc_init’:
./include/drm/drmP.h:228:2: error: ‘fw’ may be used uninitialized in this
function -Werror=maybe-uninitialized]
drm_printk(KERN_DEBUG, DRM_UT_DRIVER, fmt, ##__VA_ARGS__)
^~~~~~~~~~
drivers/gpu/drm/i915/intel_guc_loader.c:595:25: note: ‘fw’ was declared here
const struct firmware *fw;
^~
When CONFIG_DRM_I915_WERROR is set, those warnings break the build.
Initializing fw pointer to NULL in both cases removes the warnings.
Signed-off-by: Jérémy Lefaure <jeremy.lefaure@xxxxxxxxxxxx>
---
drivers/gpu/drm/i915/intel_csr.c | 2 +-
drivers/gpu/drm/i915/intel_guc_loader.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_csr.c b/drivers/gpu/drm/i915/intel_csr.c
index d7a04bc..3520b3c 100644
--- a/drivers/gpu/drm/i915/intel_csr.c
+++ b/drivers/gpu/drm/i915/intel_csr.c
@@ -389,7 +389,7 @@ static void csr_load_work_fn(struct work_struct *work)
{
struct drm_i915_private *dev_priv;
struct intel_csr *csr;
- const struct firmware *fw;
+ const struct firmware *fw = NULL;
int ret;
dev_priv = container_of(work, typeof(*dev_priv), csr.work);
diff --git a/drivers/gpu/drm/i915/intel_guc_loader.c b/drivers/gpu/drm/i915/intel_guc_loader.c
index 34d6ad2..ecfee49 100644
--- a/drivers/gpu/drm/i915/intel_guc_loader.c
+++ b/drivers/gpu/drm/i915/intel_guc_loader.c
@@ -592,7 +592,7 @@ static void guc_fw_fetch(struct drm_device *dev, struct intel_guc_fw *guc_fw)
{
struct pci_dev *pdev = dev->pdev;
struct drm_i915_gem_object *obj;
- const struct firmware *fw;
+ const struct firmware *fw = NULL;
struct guc_css_header *css;
size_t size;
int err;
--
2.10.2
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