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a=openpgp-sha256; l=1024; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=jvlD3JuIycYlsUfGVML+3UeoaevWmHaaQytOdr+mxNU=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnS6Xt/7pykgJj245vtdzYWdYBTAMnwoeiEVz0V cHOwIg5ZZOJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ0ul7QAKCRCLPIo+Aiko 1Uh9CACs2EKgY3agKG4T+t0CkgNiBGM+05Aomb7V037y3ZsVMyGBgsnshcMdjjksyQHwWAR9UO4 phcMcAP56G/wnh2roZkGyvmlMsXgcYwC/JcmmAmqRpZ3BOU41lxrAgavIrurye9kHFCYMSeIXMC ZL/VeuwljGdXtKvbiNuFpq85TOh36Cs5evtJpDjaTBBuRCU3eJzaHjovDNB31z0KSlAG44ZpfKW /bdsJLcjoLwHRdTtVG4mRghPrGrLzz35ix7Igay76WHZuOI3nL19Gs+e3V6XTkA8m2kprqqo7x9 ff5KN4kX/nqX3Z+YcrmBBsD2/q8MSlB3PQI3Q2xKw0EPGz1c X-Developer-Key: i=dmitry.baryshkov@linaro.org; a=openpgp; fpr=8F88381DD5C873E4AE487DA5199BF1243632046A Reading access to connector->eld can happen at the same time the drm_edid_to_eld() updates the data. Take the newly added eld_mutex in order to protect connector->eld from concurrent access. Signed-off-by: Dmitry Baryshkov --- drivers/gpu/drm/bridge/analogix/anx7625.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c index a2675b121fe44b96945f34215fd900f35bfde43a..c036bbc92ba96ec4663c55cca091cd5da9f6d271 100644 --- a/drivers/gpu/drm/bridge/analogix/anx7625.c +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c @@ -2002,8 +2002,10 @@ static int anx7625_audio_get_eld(struct device *dev, void *data, memset(buf, 0, len); } else { dev_dbg(dev, "audio copy eld\n"); + mutex_lock(&ctx->connector->eld_mutex); memcpy(buf, ctx->connector->eld, min(sizeof(ctx->connector->eld), len)); + mutex_unlock(&ctx->connector->eld_mutex); } return 0;