6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Peng Fan <peng.fan@xxxxxxx>
[ Upstream commit ab027c488fc4a1fff0a5b712d4bdb2d2d324e8f8 ]
'struct scmi_imx_misc_ctrl_set_in' has a zero length array in the end,
The sizeof will not count 'value[]', and hence Tx size will be smaller
than actual size for Tx,and SCMI firmware will flag this as protocol
error.
Fix this by enlarge the Tx size with 'num * sizeof(__le32)' to count in
the size of data.
Fixes: 61c9f03e22fc ("firmware: arm_scmi: Add initial support for i.MX MISC protocol")
Reviewed-by: Jacky Bai <ping.bai@xxxxxxx>
Tested-by: Shengjiu Wang <shengjiu.wang@xxxxxxx>
Acked-by: Jason Liu <jason.hui.liu@xxxxxxx>
Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
Message-Id: <20250123063441.392555-1-peng.fan@xxxxxxxxxxx>
(sudeep.holla: Commit rewording and replace hardcoded sizeof(__le32) value)
Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
index a86ab9b35953f..2641faa329cdd 100644
--- a/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
+++ b/drivers/firmware/arm_scmi/vendors/imx/imx-sm-misc.c
@@ -254,8 +254,8 @@ static int scmi_imx_misc_ctrl_set(const struct scmi_protocol_handle *ph,
if (num > max_num)
return -EINVAL;
- ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_CTRL_SET, sizeof(*in),
- 0, &t);
+ ret = ph->xops->xfer_get_init(ph, SCMI_IMX_MISC_CTRL_SET,
+ sizeof(*in) + num * sizeof(__le32), 0, &t);
if (ret)
return ret;
--
2.39.5
