On Tue, Jul 04, 2023 at 03:18:26PM +0530, Pranjal Ramajor Asha Kanojiya wrote:
>
>
> On 7/4/2023 2:08 PM, Dan Carpenter wrote:
> > On Tue, Jul 04, 2023 at 11:57:51AM +0530, Pranjal Ramajor Asha Kanojiya
> > wrote:
> > > > diff --git a/drivers/accel/qaic/qaic_control.c
> > > > b/drivers/accel/qaic/qaic_control.c
> > > > index 5c57f7b4494e..a51b1594dcfa 100644
> > > > --- a/drivers/accel/qaic/qaic_control.c
> > > > +++ b/drivers/accel/qaic/qaic_control.c
> > > > @@ -748,7 +748,8 @@ static int encode_message(struct qaic_device *qdev,
> > > > struct manage_msg *user_msg,
> > > > int ret;
> > > > int i;
> > > > - if (!user_msg->count) {
> > > > + if (!user_msg->count ||
> > > > + user_msg->len < sizeof(*trans_hdr)) {
> > > > ret = -EINVAL;
> > > > goto out;
> > > > }
> > > > @@ -765,12 +766,13 @@ static int encode_message(struct qaic_device
> > > > *qdev, struct manage_msg *user_msg,
> > > > }
> > > > for (i = 0; i < user_msg->count; ++i) {
> > > > - if (user_len >= user_msg->len) {
> > > > + if (user_len >= user_msg->len - sizeof(*trans_hdr)) {
> > > If I understand correctly this check is added to verify if we are left
> > > with
> > > trans_hdr size of data. In that case '>' comparison operator should be
> > > used.
> >
> > That was there in the original code and I thought about changing it but
> > I don't like changing things which aren't necessary and == is also
> > invalid so I decided to leave it.
> >
> I see, I understand your concern about not changing unnecessary things but
> '>=' is incorrect for reason mentioned above. We need to change that to '>'
Oh, yes. You're right. I will need to resend.
regards,
dan carpenter
