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| author | Andrew F. Davis <afd@ti.com> | 2019-05-28 11:55:10 -0400 |
|---|---|---|
| committer | Santosh Shilimkar <santosh.shilimkar@oracle.com> | 2019-06-12 20:13:34 -0700 |
| commit | 66f030eac257a572fbedab3d9646d87d647351fd (patch) | |
| tree | 2419ee2f6868b0a67da98cec7974734cba3ee160 /drivers/firmware/ti_sci.c | |
| parent | cd6c84d8f0cdc911df435bb075ba22ce3c605b07 (diff) | |
| download | lwn-66f030eac257a572fbedab3d9646d87d647351fd.tar.gz lwn-66f030eac257a572fbedab3d9646d87d647351fd.zip | |
firmware: ti_sci: Always request response from firmware
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 <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>
Diffstat (limited to 'drivers/firmware/ti_sci.c')
| -rw-r--r-- | drivers/firmware/ti_sci.c | 8 |
1 files 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); |