Commit 4623e8bf authored Jun 27, 2018 by Chris Lew Committed by Bjorn Andersson Oct 11, 2019

rpmsg: glink: Set tail pointer to 0 at end of FIFO



When wrapping around the FIFO, the remote expects the tail pointer to
be reset to 0 on the edge case where the tail equals the FIFO length.

Fixes: caf989c3 ("rpmsg: glink: Introduce glink smem based transport")
Cc: stable@vger.kernel.org
Signed-off-by: Chris Lew <clew@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

parent bbe692e3

drivers/rpmsg/qcom_glink_smem.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -105,7 +105,7 @@ static void glink_smem_rx_advance(struct qcom_glink_pipe *np,
		tail = le32_to_cpu(*pipe->tail);

		tail += count;
		if (tail > pipe->native.length)
		if (tail >= pipe->native.length)
		tail -= pipe->native.length;

		*pipe->tail = cpu_to_le32(tail);

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