From 54f7c85be3d321b4309bf93ed34f3093d24a5518 Mon Sep 17 00:00:00 2001 From: Vamsi Krishna Gattupalli Date: Mon, 14 Feb 2022 16:09:59 +0000 Subject: misc: fastrpc: Add helper function to get list and page Add helper functions to get invoke buffer and page start pointers. Signed-off-by: Vamsi Krishna Gattupalli Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20220214161002.6831-10-srinivas.kandagatla@linaro.org Signed-off-by: Greg Kroah-Hartman --- drivers/misc/fastrpc.c | 15 ++++++++++++--- 1 file changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/misc/fastrpc.c b/drivers/misc/fastrpc.c index ae7586d7956f0..2cf6286bb717d 100644 --- a/drivers/misc/fastrpc.c +++ b/drivers/misc/fastrpc.c @@ -833,6 +833,16 @@ static int fastrpc_create_maps(struct fastrpc_invoke_ctx *ctx) return 0; } +static struct fastrpc_invoke_buf *fastrpc_invoke_buf_start(union fastrpc_remote_arg *pra, int len) +{ + return (struct fastrpc_invoke_buf *)(&pra[len]); +} + +static struct fastrpc_phy_page *fastrpc_phy_page_start(struct fastrpc_invoke_buf *buf, int len) +{ + return (struct fastrpc_phy_page *)(&buf[len]); +} + static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx) { struct device *dev = ctx->fl->sctx->dev; @@ -860,9 +870,8 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx) return err; rpra = ctx->buf->virt; - list = ctx->buf->virt + ctx->nscalars * sizeof(*rpra); - pages = ctx->buf->virt + ctx->nscalars * (sizeof(*list) + - sizeof(*rpra)); + list = fastrpc_invoke_buf_start(rpra, ctx->nscalars); + pages = fastrpc_phy_page_start(list, ctx->nscalars); args = (uintptr_t)ctx->buf->virt + metalen; rlen = pkt_size - metalen; ctx->rpra = rpra; -- cgit 1.2.3-korg