This is a note to let you know that I've just added the patch titled
remoteproc: mediatek: Zero out only remaining bytes of IPI buffer
to the 6.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
remoteproc-mediatek-zero-out-only-remaining-bytes-of.patch
and it can be found in the queue-6.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 7cb985567fff3e600302452ce7228a62e6d701d6
Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Date: Mon May 20 13:27:24 2024 +0200
remoteproc: mediatek: Zero out only remaining bytes of IPI buffer
[ Upstream commit 9dbd9962cfe56d210be5232349851420b5f9c8f6 ]
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@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240520112724.139945-1-angelogioacchino.delregno@xxxxxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/remoteproc/mtk_scp.c b/drivers/remoteproc/mtk_scp.c
index abf7b371b860..e744c07507ee 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);
