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| author | Cristian Marussi <cristian.marussi@arm.com> | 2021-06-28 18:00:42 +0100 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2021-07-13 11:42:14 +0100 |
| commit | 187a002b07e8089f0b5657eafec50b5d05625569 (patch) | |
| tree | 676f75c2472a0dde7ce3359cfe134ded860587a3 /drivers/firmware/arm_scmi | |
| parent | b98cf55ec0bd88bdba725845c743e94ecaf57b7e (diff) | |
| download | linux-187a002b07e8089f0b5657eafec50b5d05625569.tar.bz2 | |
firmware: arm_scmi: Avoid padding in sensor message structure
scmi_resp_sensor_reading_complete structure is meant to represent an
SCMI asynchronous reading complete message. The readings field with
a 64bit type forces padding and breaks reads in scmi_sensor_reading_get.
Split it in two adjacent 32bit readings_low/high subfields to avoid the
padding within the structure. Alternatively we could to mark the structure
packed.
Link: https://lore.kernel.org/r/20210628170042.34105-1-cristian.marussi@arm.com
Fixes: e2083d3673916 ("firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads")
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_scmi')
| -rw-r--r-- | drivers/firmware/arm_scmi/sensors.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/firmware/arm_scmi/sensors.c b/drivers/firmware/arm_scmi/sensors.c index 2c88aa221559..308471586381 100644 --- a/drivers/firmware/arm_scmi/sensors.c +++ b/drivers/firmware/arm_scmi/sensors.c @@ -166,7 +166,8 @@ struct scmi_msg_sensor_reading_get { struct scmi_resp_sensor_reading_complete { __le32 id; - __le64 readings; + __le32 readings_low; + __le32 readings_high; }; struct scmi_sensor_reading_resp { @@ -717,7 +718,8 @@ static int scmi_sensor_reading_get(const struct scmi_protocol_handle *ph, resp = t->rx.buf; if (le32_to_cpu(resp->id) == sensor_id) - *value = get_unaligned_le64(&resp->readings); + *value = + get_unaligned_le64(&resp->readings_low); else ret = -EPROTO; } |