Commit 387f6255 authored Oct 09, 2019 by Jorge Ramirez-Ortiz Committed by Greg Kroah-Hartman Oct 10, 2019

misc: fastrpc: handle interrupted contexts

Buffers owned by a context that has been interrupted either by a
signal or a timeout might still be being accessed by the DSP.

delegate returning the associated memory to a later time when the
device is released.

Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Link: https://lore.kernel.org/r/20191009144123.24583-5-srinivas.kandagatla@linaro.org

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 55bcda35

drivers/misc/fastrpc.c

+7 −6

Original line number	Diff line number	Diff line
		@@ -984,12 +984,13 @@ static int fastrpc_internal_invoke(struct fastrpc_user *fl, u32 kernel,
		}

		bail:
		/* We are done with this compute context, remove it from pending list */
		if (err != -ERESTARTSYS && err != -ETIMEDOUT) {
		/* We are done with this compute context */
		spin_lock(&fl->lock);
		list_del(&ctx->node);
		spin_unlock(&fl->lock);
		fastrpc_context_put(ctx);

		}
		if (err)
		dev_dbg(fl->sctx->dev, "Error: Invoke Failed %d\n", err);