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rpmsg: Constify buffer passed to send API

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The rpmsg_send(), rpmsg_sendto() and other variants of sending
interfaces should only send the passed data, without modifying its
contents, so mark pointer 'data' as pointer to const.  All users of this
interface already follow this approach, so only the function
declarations have to be updated.

Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260317-rpmsg-send-const-v3-3-4d7fd27f037f@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Krzysztof Kozlowski
2026-03-17 13:36:52 +01:00
committed by Bjorn Andersson
parent 90dacbf4bf
commit b8077b4da2
7 changed files with 46 additions and 38 deletions
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4
drivers/rpmsg/mtk_rpmsg.c
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@@ -135,7 +135,7 @@ static void mtk_rpmsg_destroy_ept(struct rpmsg_endpoint *ept)
kref_put(&ept->refcount, __mtk_ept_release);
}
static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len)
static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, const void *data, int len)
{
struct mtk_rpmsg_rproc_subdev *mtk_subdev =
to_mtk_rpmsg_endpoint(ept)->mtk_subdev;
@@ -144,7 +144,7 @@ static int mtk_rpmsg_send(struct rpmsg_endpoint *ept, void *data, int len)
len, 0);
}
static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, void *data, int len)
static int mtk_rpmsg_trysend(struct rpmsg_endpoint *ept, const void *data, int len)
{
struct mtk_rpmsg_rproc_subdev *mtk_subdev =
to_mtk_rpmsg_endpoint(ept)->mtk_subdev;