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authorLee Jones <lee.jones@linaro.org>2020-11-16 17:41:00 +0000
committerDaniel Vetter <daniel.vetter@ffwll.ch>2020-11-17 20:08:29 +0100
commit09234b88ef5598252d1cee37e4d7b26a48b6557f (patch)
treeb5570f756cbc5d8309d7854aa97793c495c00d31 /drivers/gpu/drm/selftests
parentffefe45a2d9ca4eef4b5fe88bd7a8072cdc94e05 (diff)
downloadlinux-09234b88ef5598252d1cee37e4d7b26a48b6557f.tar.gz
drm/selftests/test-drm_dp_mst_helper: Move 'sideband_msg_req_encode_decode' onto the heap
There is too much data being stored on the stack.

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c: In function ‘sideband_msg_req_encode_decode’:
 drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c:168:1: warning: the frame size of 1072 bytes is larger than 1024 bytes [-Wframe-larger-than=]

Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201116174112.1833368-31-lee.jones@linaro.org
Diffstat (limited to 'drivers/gpu/drm/selftests')
-rw-r--r--drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
index e00bdc557f88..6b4759ed6bfd 100644
--- a/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
+++ b/drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c
@@ -122,7 +122,7 @@ sideband_msg_req_encode_decode(struct drm_dp_sideband_msg_req_body *in)
 {
 	struct drm_dp_sideband_msg_req_body *out;
 	struct drm_printer p = drm_err_printer(PREFIX_STR);
-	struct drm_dp_sideband_msg_tx txmsg;
+	struct drm_dp_sideband_msg_tx *txmsg;
 	int i, ret;
 	bool result = true;
 
@@ -130,8 +130,12 @@ sideband_msg_req_encode_decode(struct drm_dp_sideband_msg_req_body *in)
 	if (!out)
 		return false;
 
-	drm_dp_encode_sideband_req(in, &txmsg);
-	ret = drm_dp_decode_sideband_req(&txmsg, out);
+	txmsg = kzalloc(sizeof(*txmsg), GFP_KERNEL);
+	if (!txmsg)
+		return false;
+
+	drm_dp_encode_sideband_req(in, txmsg);
+	ret = drm_dp_decode_sideband_req(txmsg, out);
 	if (ret < 0) {
 		drm_printf(&p, "Failed to decode sideband request: %d\n",
 			   ret);
@@ -166,6 +170,7 @@ sideband_msg_req_encode_decode(struct drm_dp_sideband_msg_req_body *in)
 
 out:
 	kfree(out);
+	kfree(txmsg);
 	return result;
 }