On 07/09/17 10:31, Timo Alho wrote: > Add checks for return code in BPMP response message. > > Signed-off-by: Timo Alho <[email protected]> > --- > drivers/soc/tegra/powergate-bpmp.c | 15 +++++++++++++-- > 1 file changed, 13 insertions(+), 2 deletions(-) > > diff --git a/drivers/soc/tegra/powergate-bpmp.c > b/drivers/soc/tegra/powergate-bpmp.c > index 8fc3560..82c7e27 100644 > --- a/drivers/soc/tegra/powergate-bpmp.c > +++ b/drivers/soc/tegra/powergate-bpmp.c > @@ -42,6 +42,7 @@ static int tegra_bpmp_powergate_set_state(struct tegra_bpmp > *bpmp, > { > struct mrq_pg_request request; > struct tegra_bpmp_message msg; > + int err; > > memset(&request, 0, sizeof(request)); > request.cmd = CMD_PG_SET_STATE; > @@ -53,7 +54,13 @@ static int tegra_bpmp_powergate_set_state(struct > tegra_bpmp *bpmp, > msg.tx.data = &request; > msg.tx.size = sizeof(request); > > - return tegra_bpmp_transfer(bpmp, &msg); > + err = tegra_bpmp_transfer(bpmp, &msg); > + if (err < 0) > + return err; > + else if (msg.rx.ret < 0) > + return -EINVAL; > + > + return 0; > } > > static int tegra_bpmp_powergate_get_state(struct tegra_bpmp *bpmp, > @@ -80,6 +87,8 @@ static int tegra_bpmp_powergate_get_state(struct tegra_bpmp > *bpmp, > err = tegra_bpmp_transfer(bpmp, &msg); > if (err < 0) > return PG_STATE_OFF; > + else if (msg.rx.ret < 0) > + return -EINVAL; > > return response.get_state.state; > } > @@ -106,6 +115,8 @@ static int tegra_bpmp_powergate_get_max_id(struct > tegra_bpmp *bpmp) > err = tegra_bpmp_transfer(bpmp, &msg); > if (err < 0) > return err; > + else if (msg.rx.ret < 0) > + return -EINVAL; > > return response.get_max_id.max_id; > } > @@ -132,7 +143,7 @@ static char *tegra_bpmp_powergate_get_name(struct > tegra_bpmp *bpmp, > msg.rx.size = sizeof(response); > > err = tegra_bpmp_transfer(bpmp, &msg); > - if (err < 0) > + if (err < 0 || msg.rx.ret < 0) > return NULL; > > return kstrdup(response.get_name.name, GFP_KERNEL);
Acked-by: Jon Hunter <[email protected]> Cheers Jon -- nvpublic
