From: Greg KH <gregkh@linuxfoundation.org>
To: Muhammad Usama Anjum <musamaanjum@gmail.com>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] staging: rtl8192e, rtl8192u: use correct notation to define pointer
Date: Tue, 27 Oct 2020 12:23:03 +0100 [thread overview]
Message-ID: <20201027112303.GA405023@kroah.com> (raw)
In-Reply-To: <20201026121435.GA782465@LEGION>
On Mon, Oct 26, 2020 at 05:14:35PM +0500, Muhammad Usama Anjum wrote:
> Use pointer notation instead of using array notation as info_element is
> a pointer not array.
>
> Warnings from sparse:
> drivers/staging/rtl8192u/ieee80211/ieee80211.h:1013:51: warning: array of flexible structures
> drivers/staging/rtl8192u/ieee80211/ieee80211.h:985:51: warning: array of flexible structures
> drivers/staging/rtl8192u/ieee80211/ieee80211.h:963:51: warning: array of flexible structures
> drivers/staging/rtl8192u/ieee80211/ieee80211.h:996:51: warning: array of flexible structures
> drivers/staging/rtl8192u/ieee80211/ieee80211.h:974:51: warning: array of flexible structures
>
> drivers/staging/rtl8192e/rtllib.h:832:48: warning: array of flexible structures
> drivers/staging/rtl8192e/rtllib.h:851:48: warning: array of flexible structures
> drivers/staging/rtl8192e/rtllib.h:805:48: warning: array of flexible structures
> drivers/staging/rtl8192e/rtllib.h:843:48: warning: array of flexible structures
> drivers/staging/rtl8192e/rtllib.h:821:48: warning: array of flexible structures
>
> Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
> ---
> drivers/staging/rtl8192e/rtllib.h | 10 +++++-----
> drivers/staging/rtl8192u/ieee80211/ieee80211.h | 12 ++++++------
> 2 files changed, 11 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/staging/rtl8192e/rtllib.h b/drivers/staging/rtl8192e/rtllib.h
> index b84f00b8d18b..1dab9c3d08a8 100644
> --- a/drivers/staging/rtl8192e/rtllib.h
> +++ b/drivers/staging/rtl8192e/rtllib.h
> @@ -802,7 +802,7 @@ struct rtllib_authentication {
> __le16 transaction;
> __le16 status;
> /*challenge*/
> - struct rtllib_info_element info_element[];
> + struct rtllib_info_element *info_element;
> } __packed;
Are you sure these changes are correct? This isn't just a list of
structures after this at the end of the structure?
Please look at commit 5979afa2c4d1 ("staging: Replace zero-length array
with flexible-array member") which made most of these flexible arrays.
This is not a pointer, it really is an array, I think sparse is really
wrong here, be careful.
thanks,
greg k-h
next prev parent reply other threads:[~2020-10-27 11:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-26 12:14 [PATCH] staging: rtl8192e, rtl8192u: use correct notation to define pointer Muhammad Usama Anjum
2020-10-27 11:23 ` Greg KH [this message]
2020-10-27 13:50 ` Dan Carpenter
2020-10-28 4:42 ` Luc Van Oostenryck
2021-02-04 14:51 ` Muhammad Usama Anjum
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20201027112303.GA405023@kroah.com \
--to=gregkh@linuxfoundation.org \
--cc=devel@driverdev.osuosl.org \
--cc=linux-kernel@vger.kernel.org \
--cc=musamaanjum@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox