diff options
| author | Sen Chu <sen.chu@mediatek.com> | 2023-12-06 15:17:31 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-12-15 17:27:04 +0100 |
| commit | c49739235c426b05539589de2ffde2bbf71ae468 (patch) | |
| tree | b6aa8504a5686b333ce676b16c70ac309d868093 /drivers/spmi | |
| parent | 3ae3cf418a01203c33113e19cc1029ac434c96b5 (diff) | |
spmi: mediatek: add device id check
Add device id check for spmi write API.
Signed-off-by: Sen Chu <sen.chu@mediatek.com>
Link: https://lore.kernel.org/r/20230518040729.8789-1-sen.chu@mediatek.com
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20231206231733.4031901-9-sboyd@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/spmi')
| -rw-r--r-- | drivers/spmi/spmi-mtk-pmif.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spmi/spmi-mtk-pmif.c b/drivers/spmi/spmi-mtk-pmif.c index cc660da6a037..5079442f8ea1 100644 --- a/drivers/spmi/spmi-mtk-pmif.c +++ b/drivers/spmi/spmi-mtk-pmif.c @@ -384,6 +384,12 @@ static int pmif_spmi_write_cmd(struct spmi_controller *ctrl, u8 opc, u8 sid, u32 data, wdata, cmd; unsigned long flags; + /* Check for argument validation. */ + if (unlikely(sid & ~0xf)) { + dev_err(&ctrl->dev, "exceed the max slv id\n"); + return -EINVAL; + } + if (len > 4) { dev_err(&ctrl->dev, "pmif supports 1..4 bytes per trans, but:%zu requested", len); |