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firmware: ti_sci: Always request response from firmware

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commit 66f030eac257a572fbedab3d9646d87d647351fd upstream.

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: aa276781a6 ("firmware: Add basic support for TI System Control Interface (TI-SCI) protocol")
Signed-off-by: Andrew F. Davis <afd@ti.com>
Acked-by: Nishanth Menon <nm@ti.com>
Tested-by: Alejandro Hernandez <ajhernandez@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew F. Davis 2019-05-28 11:55:10 -04:00 committed by Greg Kroah-Hartman
parent 3dfc787f2f
commit 4b30a06982
1 changed files with 4 additions and 4 deletions
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8
drivers/firmware/ti_sci.c
View file

@ -463,9 +463,9 @@ 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);
@ -593,9 +593,9 @@ 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);