firmware: arm_scmi: Avoid padding in sensor message structure

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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: e2083d3673 ("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>

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Cristian Marussi 2021-06-28 18:00:42 +01:00 • committed by Sudeep Holla

parent b98cf55ec0

commit 187a002b07

1 changed files with 4 additions and 2 deletions

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drivers/firmware/arm_scmi/sensors.c

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