From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, cristian.marussi@arm.com Subject: [PATCH] firmware: arm_scmi: Avoid padding in sensor message structure Date: Mon, 28 Jun 2021 18:00:42 +0100 [thread overview] Message-ID: <20210628170042.34105-1-cristian.marussi@arm.com> (raw) Structure scmi_resp_sensor_reading_complete is meant to represent an SCMI asynchronous reading complete message: representing 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 padding or the need to make it packed. Fixes: e2083d3673916 ("firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads") Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- drivers/firmware/arm_scmi/sensors.c | 6 ++++-- 1 file 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; } -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Cristian Marussi <cristian.marussi@arm.com> To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: sudeep.holla@arm.com, cristian.marussi@arm.com Subject: [PATCH] firmware: arm_scmi: Avoid padding in sensor message structure Date: Mon, 28 Jun 2021 18:00:42 +0100 [thread overview] Message-ID: <20210628170042.34105-1-cristian.marussi@arm.com> (raw) Structure scmi_resp_sensor_reading_complete is meant to represent an SCMI asynchronous reading complete message: representing 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 padding or the need to make it packed. Fixes: e2083d3673916 ("firmware: arm_scmi: Add SCMI v3.0 sensors timestamped reads") Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- drivers/firmware/arm_scmi/sensors.c | 6 ++++-- 1 file 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; } -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-06-28 17:01 UTC|newest] Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-28 17:00 Cristian Marussi [this message] 2021-06-28 17:00 ` [PATCH] firmware: arm_scmi: Avoid padding in sensor message structure Cristian Marussi 2021-07-14 16:38 ` Sudeep Holla 2021-07-14 16:38 ` Sudeep Holla
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