From 09234b88ef5598252d1cee37e4d7b26a48b6557f Mon Sep 17 00:00:00 2001 From: Lee Jones Date: Mon, 16 Nov 2020 17:41:00 +0000 Subject: [PATCH] drm/selftests/test-drm_dp_mst_helper: Move 'sideband_msg_req_encode_decode' onto the heap MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Cc: Daniel Vetter Cc: dri-devel@lists.freedesktop.org Signed-off-by: Lee Jones Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20201116174112.1833368-31-lee.jones@linaro.org --- drivers/gpu/drm/selftests/test-drm_dp_mst_helper.c | 11 ++++++++--- 1 file 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 e00bdc55..6b4759ed 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; } -- 2.7.4