Messages in this thread | | | From | Guenter Roeck <> | Date | Wed, 8 Jun 2022 09:13:44 -0700 | Subject | Re: [PATCH v3 09/23] platform/chrome: cros_ec_proto: handle empty payload in getting proto info |
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On Wed, Jun 8, 2022 at 4:08 AM Tzung-Bi Shih <tzungbi@kernel.org> wrote: > > cros_ec_get_proto_info() expects to receive > sizeof(struct ec_response_get_protocol_info) from send_command(). The > payload is valid only if the return value is positive. > > Return -EPROTO if send_command() returns 0 in cros_ec_get_proto_info(). > > Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
> --- > Changes from v2: > - Separate Kunit test to another patch. > > drivers/platform/chrome/cros_ec_proto.c | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/drivers/platform/chrome/cros_ec_proto.c b/drivers/platform/chrome/cros_ec_proto.c > index 893b76703da6..6f5be9e5ede4 100644 > --- a/drivers/platform/chrome/cros_ec_proto.c > +++ b/drivers/platform/chrome/cros_ec_proto.c > @@ -314,6 +314,11 @@ static int cros_ec_get_proto_info(struct cros_ec_device *ec_dev, int devidx) > goto exit; > } > > + if (ret == 0) { > + ret = -EPROTO; > + goto exit; > + } > + > info = (struct ec_response_get_protocol_info *)msg->data; > > switch (devidx) { > -- > 2.36.1.255.ge46751e96f-goog >
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