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spmi: mediatek: add device id check

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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>
This commit is contained in:
Sen Chu 2023-12-06 15:17:31 -08:00 committed by Greg Kroah-Hartman
parent 3ae3cf418a
commit c49739235c
1 changed files with 6 additions and 0 deletions
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6
drivers/spmi/spmi-mtk-pmif.c
View file

@ -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);