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a=openpgp-sha256; l=935; i=dmitry.baryshkov@linaro.org; h=from:subject:message-id; bh=k/sdBeuIX6ZzNNN1qtwuMpr5v3fWj5pwQ/L03Dq+sDw=; b=owEBbQGS/pANAwAKAYs8ij4CKSjVAcsmYgBnS6Xu0rcXOn0b4oPtwTlM+q76z8lrV6nasm4mB qYwkSdVllSJATMEAAEKAB0WIQRMcISVXLJjVvC4lX+LPIo+Aiko1QUCZ0ul7gAKCRCLPIo+Aiko 1b8QB/9U7VqcSXJZcqnwzL14LI1Wm8fa0Vof9aggdEKIguYFSF6mBJxkKrcGEguEcmRWj1g76O4 hIPh6905NyRZ68dga7ppIwiH6+nuI3at8WHRyunXXScVm9yF0PsQ8bUDpPggd+hf5CS2nij612U DTBvf4gwViH4u5cxRfe0AoiK1SATjJXbJnm/r609EbOJDGSVy+bbt4lHoU054mBGEovBV0eVHbj 4VVam6isr2QpQJrTR4xtpKiiwUpVeFWoLxtsqui/lAqHwHNlRcqkZSMaeHh66xeCZH4wQ38Jo1O fdJOPzrGvySmqm3sGjUZSaZeFAPrET/XsBL1IOzrdkLgxrMq 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 Acked-by: Abhinav Kumar --- drivers/gpu/drm/msm/dp/dp_audio.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/msm/dp/dp_audio.c b/drivers/gpu/drm/msm/dp/dp_audio.c index a599fc5d63c524474276f5db98b05c7c512f332a..61952a0c49861efcb5e7c0884fcb85c040daf9ce 100644 --- a/drivers/gpu/drm/msm/dp/dp_audio.c +++ b/drivers/gpu/drm/msm/dp/dp_audio.c @@ -414,8 +414,10 @@ static int dp_audio_get_eld(struct device *dev, return -ENODEV; } + mutex_lock(&dp_display->connector->eld_mutex); memcpy(buf, dp_display->connector->eld, min(sizeof(dp_display->connector->eld), len)); + mutex_unlock(&dp_display->connector->eld_mutex); return 0; }