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Commit 18b469da authored by Ray Zhang's avatar Ray Zhang Committed by Nirmal Abraham
Browse files

drm/msm/dp: reallocate EDID buffer when needed 



In certain cases the pre-allocated EDID buffer is not
enough for incoming EDID data, so reallocate the
buffer according to the actual EDID data size.

CRs-Fixed: 2291153
Change-Id: I9960758dc405757c8ca07e2cbdcdcdad91a9b045
Signed-off-by: default avatarRay Zhang <rayz@codeaurora.org>
parent 74195788

drivers/gpu/drm/msm/dp/dp_debug.c

+18 −2
Original line number Diff line number Diff line
@@ -122,10 +122,26 @@ static ssize_t dp_debug_write_edid(struct file *file, 
		goto bail;



	if (edid_size != debug->edid_size) {

		pr_debug("clearing debug edid\n");

		pr_debug("realloc debug edid\n");



		if (debug->edid) {

			devm_kfree(debug->dev, debug->edid);



			debug->edid = devm_kzalloc(debug->dev,

						edid_size, GFP_KERNEL);

			if (!debug->edid) {

				rc = -ENOMEM;

				goto bail;

			}



			debug->edid_size = edid_size;



			debug->aux->set_sim_mode(debug->aux,

					debug->dp_debug.sim_mode,

					debug->edid, debug->dpcd);

		}

	}



	while (edid_size--) {

		char t[3];

		int d;