| Message ID | 20210915085517.1669675-1-mperttunen@nvidia.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Lorenzo Pieralisi |
| Headers | show |
| Series | [1/5] thermal: tegra-bpmp: Handle errors in BPMP response | expand |
On Wed, Sep 15, 2021 at 11:55:13AM +0300, Mikko Perttunen wrote: > The return value from tegra_bpmp_transfer indicates the success or > failure of the IPC transaction with BPMP. If the transaction > succeeded, we also need to check the actual command's result code. > Add code to do this. > > Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> > --- > drivers/thermal/tegra/tegra-bpmp-thermal.c | 13 ++++++++++++- > 1 file changed, 12 insertions(+), 1 deletion(-) Perhaps this should be moved into tegra_bpmp_transfer() or some new helper to make sure we can keep this consistent across all callers. For instance, I'm not sure -EINVAL is the right (or best) error code in all the cases. Either way, seems fine in this case and this is certainly an improvement, so: Acked-by: Thierry Reding <treding@nvidia.com>
On 07/10/2021 20:20, Thierry Reding wrote: > On Wed, Sep 15, 2021 at 11:55:13AM +0300, Mikko Perttunen wrote: >> The return value from tegra_bpmp_transfer indicates the success or >> failure of the IPC transaction with BPMP. If the transaction >> succeeded, we also need to check the actual command's result code. >> Add code to do this. >> >> Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> >> --- >> drivers/thermal/tegra/tegra-bpmp-thermal.c | 13 ++++++++++++- >> 1 file changed, 12 insertions(+), 1 deletion(-) > > Perhaps this should be moved into tegra_bpmp_transfer() or some new > helper to make sure we can keep this consistent across all callers. > > For instance, I'm not sure -EINVAL is the right (or best) error code in > all the cases. Either way, seems fine in this case and this is certainly > an improvement, so: > > Acked-by: Thierry Reding <treding@nvidia.com> Applied, thanks
diff --git a/drivers/thermal/tegra/tegra-bpmp-thermal.c b/drivers/thermal/tegra/tegra-bpmp-thermal.c index 94f1da1dcd69..5affc3d196be 100644 --- a/drivers/thermal/tegra/tegra-bpmp-thermal.c +++ b/drivers/thermal/tegra/tegra-bpmp-thermal.c @@ -52,6 +52,8 @@ static int tegra_bpmp_thermal_get_temp(void *data, int *out_temp) err = tegra_bpmp_transfer(zone->tegra->bpmp, &msg); if (err) return err; + if (msg.rx.ret) + return -EINVAL; *out_temp = reply.get_temp.temp; @@ -63,6 +65,7 @@ static int tegra_bpmp_thermal_set_trips(void *data, int low, int high) struct tegra_bpmp_thermal_zone *zone = data; struct mrq_thermal_host_to_bpmp_request req; struct tegra_bpmp_message msg; + int err; memset(&req, 0, sizeof(req)); req.type = CMD_THERMAL_SET_TRIP; @@ -76,7 +79,13 @@ static int tegra_bpmp_thermal_set_trips(void *data, int low, int high) msg.tx.data = &req; msg.tx.size = sizeof(req); - return tegra_bpmp_transfer(zone->tegra->bpmp, &msg); + err = tegra_bpmp_transfer(zone->tegra->bpmp, &msg); + if (err) + return err; + if (msg.rx.ret) + return -EINVAL; + + return 0; } static void tz_device_update_work_fn(struct work_struct *work) @@ -140,6 +149,8 @@ static int tegra_bpmp_thermal_get_num_zones(struct tegra_bpmp *bpmp, err = tegra_bpmp_transfer(bpmp, &msg); if (err) return err; + if (msg.rx.ret) + return -EINVAL; *num_zones = reply.get_num_zones.num;
The return value from tegra_bpmp_transfer indicates the success or failure of the IPC transaction with BPMP. If the transaction succeeded, we also need to check the actual command's result code. Add code to do this. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> --- drivers/thermal/tegra/tegra-bpmp-thermal.c | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-)