linux-kernel - Re: [PATCH] staging: wilc1000: Merge memcpy + le32_to_cpus to get_unaligned

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Message-ID: <20190719140133.GH3111@kadam>
Date:   Fri, 19 Jul 2019 17:01:33 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Ajay.Kathat@...rochip.com
Cc:     hslester96@...il.com, devel@...verdev.osuosl.org,
        gregkh@...uxfoundation.org, linux-wireless@...r.kernel.org,
        linux-kernel@...r.kernel.org, Adham.Abozaeid@...rochip.com
Subject: Re: [PATCH] staging: wilc1000: Merge memcpy + le32_to_cpus to
 get_unaligned_le32

On Fri, Jul 19, 2019 at 12:05:07PM +0000, Ajay.Kathat@...rochip.com wrote:
> 
> On 7/19/2019 5:16 PM, Chuhong Yuan wrote:
> > 
> > <Ajay.Kathat@...rochip.com> 于2019年7月19日周五 下午7:34写道：
> >>
> >> On 7/19/2019 1:40 PM, Chuhong Yuan wrote:
> >>>
> >>> Merge the combo use of memcpy and le32_to_cpus.
> >>> Use get_unaligned_le32 instead.
> >>> This simplifies the code.
> >>>
> >>> Signed-off-by: Chuhong Yuan <hslester96@...il.com>
> >>> ---
> >>>  drivers/staging/wilc1000/wilc_wfi_cfgoperations.c | 3 +--
> >>>  1 file changed, 1 insertion(+), 2 deletions(-)
> >>>
> >>> diff --git a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
> >>> index d72fdd333050..12fb4add05ec 100644
> >>> --- a/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
> >>> +++ b/drivers/staging/wilc1000/wilc_wfi_cfgoperations.c
> >>> @@ -1038,8 +1038,7 @@ void wilc_wfi_p2p_rx(struct wilc_vif *vif, u8 *buff, u32 size)
> >>>       s32 freq;
> >>>       __le16 fc;
> >>>
> >>> -     memcpy(&header, (buff - HOST_HDR_OFFSET), HOST_HDR_OFFSET);
> >>> -     le32_to_cpus(&header);
> >>> +     header = get_unaligned_le32(buff - HOST_HDR_OFFSET);
> >>>       pkt_offset = GET_PKT_OFFSET(header);
> >>>
> >>>       if (pkt_offset & IS_MANAGMEMENT_CALLBACK) {
> >>>
> >>
> >> Thanks for sending the patches.
> >>
> >> The code change looks okay to me. Just a minor comment, avoid the use of
> >> same subject line for different patches.
> > 
> > These two patches are in the same subsystem and solve the same problem.
> > I splitted them into two patches by mistake since I did not notice the problems
> > in the second patch when I sent the first one.
> > Should I merge the two patches and resend?
> > 
> 
> Yes, please go ahead, merge the patches and send the updated version.
> 

This is wrong advice.  Don't merge the patches because they are for
different drivers.  The original subjects are fine because the
subsystems are different so that's okay.

regards,
dan carpenter