Thread (1 message) 1 message, 1 author, 2019-06-11

Re: [PATCH v2] firmware: ti_sci: Always request response from firmware

From: Tero Kristo <hidden>
Date: 2019-06-11 17:31:23
Also in: lkml

On 28/05/2019 18:55, Andrew F. Davis wrote:
TI-SCI firmware will only respond to messages when the
TI_SCI_FLAG_REQ_ACK_ON_PROCESSED flag is set. Most messages already do
this, set this for the ones that do not.

This will be enforced in future firmware that better match the TI-SCI
specifications, this patch will not break users of existing firmware.

Fixes: aa276781a64a ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Signed-off-by: Andrew F. Davis <redacted>
Acked-by: Nishanth Menon <nm@ti.com>
Tested-by: Alejandro Hernandez <redacted>
---

Changes from v1:
  - Rebased on v5.2-rc2
Thanks, queuing up for 5.3.

-Tero
quoted hunk
  drivers/firmware/ti_sci.c | 8 ++++----
  1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/firmware/ti_sci.c b/drivers/firmware/ti_sci.c
index ef93406ace1b..36ce11a67235 100644
--- a/drivers/firmware/ti_sci.c
+++ b/drivers/firmware/ti_sci.c
@@ -466,9 +466,9 @@ static int ti_sci_cmd_get_revision(struct ti_sci_info *info)
  	struct ti_sci_xfer *xfer;
  	int ret;
  
-	/* No need to setup flags since it is expected to respond */
  	xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_VERSION,
-				   0x0, sizeof(struct ti_sci_msg_hdr),
+				   TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				   sizeof(struct ti_sci_msg_hdr),
  				   sizeof(*rev_info));
  	if (IS_ERR(xfer)) {
  		ret = PTR_ERR(xfer);
@@ -596,9 +596,9 @@ static int ti_sci_get_device_state(const struct ti_sci_handle *handle,
  	info = handle_to_ti_sci_info(handle);
  	dev = info->dev;
  
-	/* Response is expected, so need of any flags */
  	xfer = ti_sci_get_one_xfer(info, TI_SCI_MSG_GET_DEVICE_STATE,
-				   0, sizeof(*req), sizeof(*resp));
+				   TI_SCI_FLAG_REQ_ACK_ON_PROCESSED,
+				   sizeof(*req), sizeof(*resp));
  	if (IS_ERR(xfer)) {
  		ret = PTR_ERR(xfer);
  		dev_err(dev, "Message alloc failed(%d)\n", ret);
--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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