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accel/qaic: initialize ret variable to 0

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clang static analysis reports
drivers/accel/qaic/qaic_data.c:610:2: warning: Undefined or garbage
  value returned to caller [core.uninitialized.UndefReturn]
        return ret;
        ^~~~~~~~~~

From a code analysis of the function, the ret variable is only set some
of the time but is always returned.  This suggests ret can return
uninitialized garbage. However BO allocation will ensure ret is always
set in reality.

Initialize ret to 0 to silence the warning.

Fixes: ff13be8303 ("accel/qaic: Add datapath")
Signed-off-by: Tom Rix <trix@redhat.com>
[jhugo: Reword commit text]
Signed-off-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Reviewed-by: Carl Vanderlip <quic_carlv@quicinc.com>
Reviewed-by: Pranjal Ramajor Asha Kanojiya <quic_pkanojiy@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230517165605.16770-1-quic_jhugo@quicinc.com
This commit is contained in:
Tom Rix 2023-05-17 10:56:05 -06:00 committed by Jeffrey Hugo
parent c21f11d182
commit 0e163e54c3
1 changed files with 1 additions and 1 deletions
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2
drivers/accel/qaic/qaic_data.c
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@ -591,7 +591,7 @@ static int qaic_gem_object_mmap(struct drm_gem_object *obj, struct vm_area_struc
struct qaic_bo *bo = to_qaic_bo(obj);
unsigned long offset = 0;
struct scatterlist *sg;
int ret;
int ret = 0;
if (obj->import_attach)
return -EINVAL;