msm: kgsl: Fix the race between context create and destroy



Hold the context lock before updating the context id in
param->drawctxt_id to avoid race condition between context
creation and context destroy.

Change-Id: Ic26d3e5b68078c02d15c38080b1a262ea4b1f7fe
Signed-off-by: Sunil Khatri <sunilkh@codeaurora.org>

parent 20ae7a51

drivers/gpu/msm/kgsl.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1665,9 +1665,9 @@ long kgsl_ioctl_drawctxt_create(struct kgsl_device_private *dev_priv,
		/* Commit the pointer to the context in context_idr */
		write_lock(&device->context_lock);
		idr_replace(&device->context_idr, context, context->id);
		param->drawctxt_id = context->id;
		write_unlock(&device->context_lock);

		param->drawctxt_id = context->id;
		done:
		return result;
		}