From: Greg KH <gregkh@linuxfoundation.org>
To: Krish Jain <krishjain02939@gmail.com>
Cc: Bryan Brattlof <hello@bryanbrattlof.com>,
linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev
Subject: Re: [PATCH] Declare the file_operations struct as const
Date: Sun, 29 Aug 2021 08:16:55 +0200 [thread overview]
Message-ID: <YSsmV3LIZ9NLZkdQ@kroah.com> (raw)
In-Reply-To: <CAPGkw+x7sXUtrZYv6tm+Apbjk5CYwd1j1BvvL6uCPWsot3zKSg@mail.gmail.com>
On Sun, Aug 29, 2021 at 04:13:43AM +0200, Krish Jain wrote:
> On Sat, Aug 28, 2021 at 1:38 AM Bryan Brattlof <hello@bryanbrattlof.com> wrote:
> > As for your patch, I built the driver using:
> >
> > $ make CCFLAGS=-Werror W=1 M=drivers/staging/android
> >
> > Which produced the following error:
> >
> >
> > drivers/staging/android/ashmem.c: In function ‘ashmem_mmap’:
> > drivers/staging/android/ashmem.c:380:2: warning: ‘static’ is not at beginning of declaration [-Wold-style-declaration]
> > 380 | const static struct file_operations vmfile_fops;
> > | ^~~~~
> > drivers/staging/android/ashmem.c:431:16: error: assignment of read-only variable ‘vmfile_fops’
> > 431 | vmfile_fops = *vmfile->f_op;
> > | ^
> > drivers/staging/android/ashmem.c:432:21: error: assignment of member ‘mmap’ in read-only object
> > 432 | vmfile_fops.mmap = ashmem_vmfile_mmap;
> > | ^
> > drivers/staging/android/ashmem.c:433:34: error: assignment of member ‘get_unmapped_area’ in read-only object
> > 433 | vmfile_fops.get_unmapped_area =
> > | ^
> > make[1]: *** [scripts/Makefile.build:271: drivers/staging/android/ashmem.o] Error 1
> > make: *** [Makefile:1851: drivers/staging/android] Error 2
> >
>
> Hi, this seems very useful and I tried this myself just now. I don't
> get any errors that you do though. When I hit enter I just get a new
> shell prompt. What am I doing wrong? Probably a silly mistake. I ran
> make CCFLAGS=-Werror M=drivers/staging/android/.
Are you sure the file is being built at all? You usually have to select
the proper configuration option to enable that driver as well.
thanks,
greg k-h
next prev parent reply other threads:[~2021-08-29 6:17 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAPGkw+x+B1731SL=afoSKiWwH-n-FA5YJ+WOwYdv8iyFhWk1zA@mail.gmail.com>
[not found] ` <3634721.RBzQ2xsved@localhost.localdomain>
2021-08-27 7:48 ` [PATCH] Declare the file_operations struct as const Fabio M. De Francesco
2021-08-27 8:50 ` Krish Jain
2021-08-27 18:38 ` Krish Jain
2021-08-27 19:46 ` Krish Jain
2021-08-27 23:38 ` Bryan Brattlof
2021-08-28 9:37 ` Krish Jain
2021-08-28 9:46 ` Greg KH
2021-08-28 9:52 ` Krish Jain
2021-08-28 11:13 ` Fabio M. De Francesco
2021-08-29 2:13 ` Krish Jain
2021-08-29 2:16 ` Krish Jain
2021-08-29 6:16 ` Greg KH [this message]
2021-08-29 14:45 Bryan Brattlof
2021-08-29 16:20 ` Krish Jain
2021-08-29 16:34 ` Krish Jain
2021-08-29 16:49 ` Bryan Brattlof
2021-08-29 16:56 ` Krish Jain
2021-08-29 18:28 ` Krish Jain
2021-08-29 18:46 ` Krish Jain
2021-08-29 21:00 ` Bryan Brattlof
2021-08-29 22:11 ` Krish Jain
2021-08-30 12:40 ` Krish Jain
2021-08-30 13:01 ` Krish Jain
2021-08-31 0:42 ` Krish Jain
2021-08-31 13:35 ` Bryan Brattlof
2021-08-31 14:00 ` Fabio M. De Francesco
2021-08-31 23:00 ` Bryan Brattlof
2021-09-01 15:20 ` Krish Jain
2021-09-01 15:30 ` Greg KH
2021-09-01 15:34 ` Krish Jain
2021-09-01 16:51 ` Greg KH
2021-09-01 17:34 ` Bryan Brattlof
2021-09-01 18:04 ` Krish Jain
2021-09-01 20:29 ` Bryan Brattlof
-- strict thread matches above, loose matches on Subject: below --
2021-08-27 2:19 Krish Jain
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