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| author | Chris Lew <clew@codeaurora.org> | 2018-06-27 18:19:57 -0700 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2019-10-11 11:34:12 -0700 |
| commit | 4623e8bf1de0b86e23a56cdb39a72f054e89c3bd (patch) | |
| tree | 1a4a76d54ab48ca4486662d793139865fa135743 /drivers/rpmsg | |
| parent | bbe692e349e2a1edf3fe0a29a0e05899c9c94d51 (diff) | |
| download | linux-4623e8bf1de0b86e23a56cdb39a72f054e89c3bd.tar.gz linux-4623e8bf1de0b86e23a56cdb39a72f054e89c3bd.tar.bz2 linux-4623e8bf1de0b86e23a56cdb39a72f054e89c3bd.zip | |
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: caf989c350e8 ("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>
Diffstat (limited to 'drivers/rpmsg')
| -rw-r--r-- | drivers/rpmsg/qcom_glink_smem.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/rpmsg/qcom_glink_smem.c b/drivers/rpmsg/qcom_glink_smem.c index 4238383d8685..579bc4443f6d 100644 --- a/drivers/rpmsg/qcom_glink_smem.c +++ b/drivers/rpmsg/qcom_glink_smem.c @@ -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); |