Messages in this thread Patch in this message | ![/](/images/icornerl.gif) | | From | AngeloGioacchino Del Regno <> | Subject | [PATCH] remoteproc: mediatek: Zero out only remaining bytes of IPI buffer | Date | Mon, 20 May 2024 13:27:24 +0200 |
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In scp_ipi_handler(), instead of zeroing out the entire shared buffer, which may be as large as 600 bytes, overwrite it with the received data, then zero out only the remaining bytes.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> --- drivers/remoteproc/mtk_scp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c index e5214d43181e..dc70cf7db44d 100644 --- a/drivers/remoteproc/mtk_scp.c +++ b/drivers/remoteproc/mtk_scp.c @@ -117,8 +117,8 @@ static void scp_ipi_handler(struct mtk_scp *scp) return; } - memset(scp->share_buf, 0, scp_sizes->ipi_share_buffer_size); memcpy_fromio(scp->share_buf, &rcv_obj->share_buf, len); + memset(&scp->share_buf[len], 0, scp_sizes->ipi_share_buffer_size - len); handler(scp->share_buf, len, ipi_desc[id].priv); scp_ipi_unlock(scp, id); -- 2.45.1
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