linux-kernel - Re: [Outreachy kernel] [PATCH 1/6] staging: wlan-ng: Fix sparse warning of restricted _

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Date:   Thu, 2 Mar 2017 16:41:03 +0530
From:   SIMRAN SINGHAL <singhalsimran0@...il.com>
To:     Julia Lawall <julia.lawall@...6.fr>
Cc:     Greg KH <gregkh@...uxfoundation.org>, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, sergio.paracuellos@...il.com,
        Juliana Rodrigues <juliana.orod@...il.com>,
        thomas.petazzoni@...e-electrons.com, noralf@...nnes.org,
        outreachy-kernel@...glegroups.com
Subject: Re: [Outreachy kernel] [PATCH 1/6] staging: wlan-ng: Fix sparse
 warning of restricted __le16

On Thu, Mar 2, 2017 at 3:20 PM, Julia Lawall <julia.lawall@...6.fr> wrote:
>
>
> On Thu, 2 Mar 2017, Julia Lawall wrote:
>
>>
>>
>> On Thu, 2 Mar 2017, simran singhal wrote:
>>
>> > This patch fixes the following sparse warning:
>> > warning: cast to restricted __le16
>>
>> You commit message should not say just fix X.  What have you done to carry
>> out the fix and why is this the correct approach?
>
> This comment applies to all of the patches in the series.
>
> julia
>
The changes and sparse warnings for them seems reasonable to me as
after doing the
change sparse was not showing error like cast to __le16 or something like this.
Also it compiled perfectly.
>>
>> julia
>>
>> >
>> > Signed-off-by: simran singhal <singhalsimran0@...il.com>
>> > ---
>> >  drivers/staging/wlan-ng/prism2sta.c | 51 ++++++++++++++++++-------------------
>> >  1 file changed, 25 insertions(+), 26 deletions(-)
>> >
>> > diff --git a/drivers/staging/wlan-ng/prism2sta.c b/drivers/staging/wlan-ng/prism2sta.c
>> > index 984804b..82d3a70 100644
>> > --- a/drivers/staging/wlan-ng/prism2sta.c
>> > +++ b/drivers/staging/wlan-ng/prism2sta.c
>> > @@ -372,10 +372,9 @@ static int prism2sta_mlmerequest(struct wlandevice *wlandev,
>> >                     qualmsg->noise.status =
>> >                         P80211ENUM_msgitem_status_data_ok;
>> >
>> > -                   qualmsg->link.data = le16_to_cpu(hw->qual.cq_curr_bss);
>> > -                   qualmsg->level.data =
>> > -                           le16_to_cpu(hw->qual.asl_curr_bss);
>> > -                   qualmsg->noise.data = le16_to_cpu(hw->qual.anl_curr_fc);
>> > +                   qualmsg->link.data = hw->qual.cq_curr_bss;
>> > +                   qualmsg->level.data = hw->qual.asl_curr_bss;
>> > +                   qualmsg->noise.data = hw->qual.anl_curr_fc;
>> >                     qualmsg->txrate.data = hw->txrate;
>> >
>> >                     break;
>> > @@ -603,10 +602,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev)
>> >     }
>> >
>> >     /* get all the nic id fields in host byte order */
>> > -   hw->ident_nic.id = le16_to_cpu(hw->ident_nic.id);
>> > -   hw->ident_nic.variant = le16_to_cpu(hw->ident_nic.variant);
>> > -   hw->ident_nic.major = le16_to_cpu(hw->ident_nic.major);
>> > -   hw->ident_nic.minor = le16_to_cpu(hw->ident_nic.minor);
>> > +   hw->ident_nic.id = hw->ident_nic.id;
>> > +   hw->ident_nic.variant = hw->ident_nic.variant;
>> > +   hw->ident_nic.major = hw->ident_nic.major;
>> > +   hw->ident_nic.minor = hw->ident_nic.minor;
>> >
>> >     netdev_info(wlandev->netdev, "ident: nic h/w: id=0x%02x %d.%d.%d\n",
>> >                 hw->ident_nic.id, hw->ident_nic.major,
>> > @@ -622,10 +621,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev)
>> >     }
>> >
>> >     /* get all the private fw id fields in host byte order */
>> > -   hw->ident_pri_fw.id = le16_to_cpu(hw->ident_pri_fw.id);
>> > -   hw->ident_pri_fw.variant = le16_to_cpu(hw->ident_pri_fw.variant);
>> > -   hw->ident_pri_fw.major = le16_to_cpu(hw->ident_pri_fw.major);
>> > -   hw->ident_pri_fw.minor = le16_to_cpu(hw->ident_pri_fw.minor);
>> > +   hw->ident_pri_fw.id = hw->ident_pri_fw.id;
>> > +   hw->ident_pri_fw.variant = hw->ident_pri_fw.variant;
>> > +   hw->ident_pri_fw.major = hw->ident_pri_fw.major;
>> > +   hw->ident_pri_fw.minor = hw->ident_pri_fw.minor;
>> >
>> >     netdev_info(wlandev->netdev, "ident: pri f/w: id=0x%02x %d.%d.%d\n",
>> >                 hw->ident_pri_fw.id, hw->ident_pri_fw.major,
>> > @@ -648,10 +647,10 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev)
>> >     }
>> >
>> >     /* get all the station fw id fields in host byte order */
>> > -   hw->ident_sta_fw.id = le16_to_cpu(hw->ident_sta_fw.id);
>> > -   hw->ident_sta_fw.variant = le16_to_cpu(hw->ident_sta_fw.variant);
>> > -   hw->ident_sta_fw.major = le16_to_cpu(hw->ident_sta_fw.major);
>> > -   hw->ident_sta_fw.minor = le16_to_cpu(hw->ident_sta_fw.minor);
>> > +   hw->ident_sta_fw.id = hw->ident_sta_fw.id;
>> > +   hw->ident_sta_fw.variant = hw->ident_sta_fw.variant;
>> > +   hw->ident_sta_fw.major = hw->ident_sta_fw.major;
>> > +   hw->ident_sta_fw.minor = hw->ident_sta_fw.minor;
>> >
>> >     /* strip out the 'special' variant bits */
>> >     hw->mm_mods = hw->ident_sta_fw.variant & GENMASK(15, 14);
>> > @@ -683,11 +682,11 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev)
>> >     /* get all the Compatibility range, modem interface supplier
>> >      * fields in byte order
>> >      */
>> > -   hw->cap_sup_mfi.role = le16_to_cpu(hw->cap_sup_mfi.role);
>> > -   hw->cap_sup_mfi.id = le16_to_cpu(hw->cap_sup_mfi.id);
>> > -   hw->cap_sup_mfi.variant = le16_to_cpu(hw->cap_sup_mfi.variant);
>> > -   hw->cap_sup_mfi.bottom = le16_to_cpu(hw->cap_sup_mfi.bottom);
>> > -   hw->cap_sup_mfi.top = le16_to_cpu(hw->cap_sup_mfi.top);
>> > +   hw->cap_sup_mfi.role = hw->cap_sup_mfi.role;
>> > +   hw->cap_sup_mfi.id = hw->cap_sup_mfi.id;
>> > +   hw->cap_sup_mfi.variant = hw->cap_sup_mfi.variant;
>> > +   hw->cap_sup_mfi.bottom = hw->cap_sup_mfi.bottom;
>> > +   hw->cap_sup_mfi.top = hw->cap_sup_mfi.top;
>> >
>> >     netdev_info(wlandev->netdev,
>> >                 "MFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
>> > @@ -707,11 +706,11 @@ static int prism2sta_getcardinfo(struct wlandevice *wlandev)
>> >     /* get all the Compatibility range, controller interface supplier
>> >      * fields in byte order
>> >      */
>> > -   hw->cap_sup_cfi.role = le16_to_cpu(hw->cap_sup_cfi.role);
>> > -   hw->cap_sup_cfi.id = le16_to_cpu(hw->cap_sup_cfi.id);
>> > -   hw->cap_sup_cfi.variant = le16_to_cpu(hw->cap_sup_cfi.variant);
>> > -   hw->cap_sup_cfi.bottom = le16_to_cpu(hw->cap_sup_cfi.bottom);
>> > -   hw->cap_sup_cfi.top = le16_to_cpu(hw->cap_sup_cfi.top);
>> > +   hw->cap_sup_cfi.role = hw->cap_sup_cfi.role;
>> > +   hw->cap_sup_cfi.id = hw->cap_sup_cfi.id;
>> > +   hw->cap_sup_cfi.variant = hw->cap_sup_cfi.variant;
>> > +   hw->cap_sup_cfi.bottom = hw->cap_sup_cfi.bottom;
>> > +   hw->cap_sup_cfi.top = hw->cap_sup_cfi.top;
>> >
>> >     netdev_info(wlandev->netdev,
>> >                 "CFI:SUP:role=0x%02x:id=0x%02x:var=0x%02x:b/t=%d/%d\n",
>> > --
>> > 2.7.4
>> >
>> > --
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>>
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