diff options
Diffstat (limited to 'drivers/firmware/arm_scmi/driver.c')
| -rw-r--r-- | drivers/firmware/arm_scmi/driver.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 6c77fcc1bcb7..5ff0bcbb4db4 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -751,6 +751,12 @@ static int do_xfer(const struct scmi_protocol_handle *ph, struct device *dev = info->dev; struct scmi_chan_info *cinfo; + if (xfer->hdr.poll_completion && !info->desc->ops->poll_done) { + dev_warn_once(dev, + "Polling mode is not supported by transport.\n"); + return -EINVAL; + } + /* * Initialise protocol id now from protocol handle to avoid it being * overridden by mistake (or malice) by the protocol code mangling with @@ -787,7 +793,6 @@ static int do_xfer(const struct scmi_protocol_handle *ph, ktime_t stop = ktime_add_ns(ktime_get(), SCMI_MAX_POLL_TO_NS); spin_until_cond(scmi_xfer_done_no_timeout(cinfo, xfer, stop)); - if (ktime_before(ktime_get(), stop)) { unsigned long flags; |