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misc: fastrpc: Move fdlist to invoke context structure

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The fdlist is currently part of the meta buffer which is set during
fastrpc_get_args(), this fdlist is getting recalculated during
fastrpc_put_args().

Move fdlist to the invoke context structure to improve maintainability
and reduce redundancy. This centralizes its handling and simplifies
meta buffer preparation and reading logic.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Ekansh Gupta <ekansh.gupta@oss.qualcomm.com>
Signed-off-by: Srinivas Kandagatla <srini@kernel.org>
Link: https://patch.msgid.link/20260729094352.111065-5-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ekansh Gupta
2026-07-29 10:43:46 +01:00
committed by Greg Kroah-Hartman
parent bc53df3d17
commit 1b59271fa6
1 changed files with 4 additions and 9 deletions
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13
drivers/misc/fastrpc.c
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@@ -233,6 +233,7 @@ struct fastrpc_invoke_ctx {
int pid;
int client_id;
u32 sc;
u64 *fdlist;
u32 *crc;
u64 ctxid;
u64 msg_sz;
@@ -1063,6 +1064,7 @@ static int fastrpc_get_args(u32 kernel, struct fastrpc_invoke_ctx *ctx)
rpra = ctx->buf->virt;
list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
pages = fastrpc_phy_page_start(list, ctx->nscalars);
ctx->fdlist = (u64 *)(pages + ctx->nscalars);
args = (uintptr_t)ctx->buf->virt + metalen;
rlen = pkt_size - metalen;
ctx->rpra = rpra;
@@ -1165,18 +1167,11 @@ static int fastrpc_put_args(struct fastrpc_invoke_ctx *ctx,
union fastrpc_remote_arg *rpra = ctx->rpra;
struct fastrpc_user *fl = ctx->fl;
struct fastrpc_map *mmap = NULL;
struct fastrpc_invoke_buf *list;
struct fastrpc_phy_page *pages;
u64 *fdlist;
int i, inbufs, outbufs, handles;
u64 *fdlist = ctx->fdlist;
int i, inbufs;
int ret = 0;
inbufs = REMOTE_SCALARS_INBUFS(ctx->sc);
outbufs = REMOTE_SCALARS_OUTBUFS(ctx->sc);
handles = REMOTE_SCALARS_INHANDLES(ctx->sc) + REMOTE_SCALARS_OUTHANDLES(ctx->sc);
list = fastrpc_invoke_buf_start(rpra, ctx->nscalars);
pages = fastrpc_phy_page_start(list, ctx->nscalars);
fdlist = (uint64_t *)(pages + inbufs + outbufs + handles);
for (i = inbufs; i < ctx->nbufs; ++i) {
if (!ctx->maps[i]) {