drm/i915/gvt: Fix uninitialized variable in handle_mmio()

[ Upstream commit 47caa96478b99d6d1199b89467cc3e5a6cc754ee ]

This code prints the wrong variable in the warning message.  It should
print "i" instead of "info->offset".  On the first iteration "info" is
uninitialized leading to a crash and on subsequent iterations it prints
the previous offset instead of the current one.

Fixes: e0f74ed4634d ("i915/gvt: Separate the MMIO tracking table from GVT-g")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/11957c20-b178-4027-9b0a-e32e9591dd7c@moroto.mountain
Reviewed-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index a9f7fa9..d30f881 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -2850,8 +2850,7 @@ static int handle_mmio(struct intel_gvt_mmio_table_iter *iter, u32 offset,
        for (i = start; i < end; i += 4) {
                p = intel_gvt_find_mmio_info(gvt, i);
                if (p) {
-                       WARN(1, "dup mmio definition offset %x\n",
-                               info->offset);
+                       WARN(1, "dup mmio definition offset %x\n", i);
 
                        /* We return -EEXIST here to make GVT-g load fail.
                         * So duplicated MMIO can be found as soon as