Re: [PATCH v7] staging: vt6656: add error code handling to unused variable

From: John B. Wyatt IV
Date: Mon Mar 30 2020 - 19:32:26 EST


On Tue, 2020-03-31 at 00:42 +0200, Stefano Brivio wrote:
> On Mon, 30 Mar 2020 15:37:18 -0700
> "John B. Wyatt IV" <jbwyatt4@xxxxxxxxx> wrote:
>
> > Add error code handling to unused 'ret' variable that was never
> > used.
> > Return an error code from functions called within
> > vnt_radio_power_on.
> >
> > Issue reported by coccinelle (coccicheck).
> >
> > Suggested-by: Quentin Deslandes <quentin.deslandes@xxxxxxxxxxx>
> > Suggested-by: Stefano Brivio <sbrivio@xxxxxxxxxx>
> > Reviewed-by: Quentin Deslandes <quentin.deslandes@xxxxxxxxxxx>
> > Signed-off-by: John B. Wyatt IV <jbwyatt4@xxxxxxxxx>
> > ---
> > v7: Move an if check.
> > Suggested by Stefano Brivio <sbrivio@xxxxxxxxxx>
> >
> > v6: Forgot to add all the v5 code to commit.
> >
> > v5: Remove Suggested-by: Julia Lawall above seperator line.
> > Remove break; statement in switch block.
> > break; removal checked by both gcc compile and checkpatch.
> > Suggested by Stefano Brivio <sbrivio@xxxxxxxxxx>
> >
> > v4: Move Suggested-by: Julia Lawall above seperator line.
> > Add Reviewed-by tag as requested by Quentin Deslandes.
> >
> > v3: Forgot to add v2 code changes to commit.
> >
> > v2: Replace goto statements with return.
> > Remove last if check because it was unneeded.
> > Suggested-by: Julia Lawall <julia.lawall@xxxxxxxx>
> >
> > drivers/staging/vt6656/card.c | 20 ++++++++++++--------
> > 1 file changed, 12 insertions(+), 8 deletions(-)
> >
> > diff --git a/drivers/staging/vt6656/card.c
> > b/drivers/staging/vt6656/card.c
> > index dc3ab10eb630..df12c73097e0 100644
> > --- a/drivers/staging/vt6656/card.c
> > +++ b/drivers/staging/vt6656/card.c
> > @@ -723,9 +723,13 @@ int vnt_radio_power_on(struct vnt_private
> > *priv)
> > {
> > int ret = 0;
> >
> > - vnt_exit_deep_sleep(priv);
> > + ret = vnt_exit_deep_sleep(priv);
> > + if (ret)
> > + return ret;
> >
> > - vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
> > + ret = vnt_mac_reg_bits_on(priv, MAC_REG_HOSTCR, HOSTCR_RXON);
> > + if (ret)
> > + return ret;
> >
> > switch (priv->rf_type) {
> > case RF_AL2230:
> > @@ -734,14 +738,14 @@ int vnt_radio_power_on(struct vnt_private
> > *priv)
> > case RF_VT3226:
> > case RF_VT3226D0:
> > case RF_VT3342A0:
> > - vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
> > - (SOFTPWRCTL_SWPE2 |
> > SOFTPWRCTL_SWPE3));
> > - break;
> > + ret = vnt_mac_reg_bits_on(priv, MAC_REG_SOFTPWRCTL,
> > + (SOFTPWRCTL_SWPE2 |
> > + SOFTPWRCTL_SWPE3));
>
> Grrr, sorry, almost there, I didn't notice this: SOFTPWRCTL_SWPE3
> needs
> to be aligned *after* the open (useless) parenthesis:
>
> (SOFTPWRCTL_SWPE2 |
> SOFTPWRCTL_SWPE3));
>
> because it's another operand of the | operation surrounded by ().
> Doesn't checkpatch warn?
>
> The rest looks good to me.
>

I had to switch from a VM to native and forget to put the git hook in
this repo clone.

Still, after I did, checkpatch complained about trailing white space
after SOFTPWRCTL_SWPE2 |, but not the alignment issue. Fixing the
alignment issue produced no warnings either. :(