linux-kernel - Re: [PATCH v2] vfio-mdev: add missing MODULE

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Message-ID: <20240717124451.52af6596.alex.williamson@redhat.com>
Date: Wed, 17 Jul 2024 12:44:51 -0600
From: Alex Williamson <alex.williamson@...hat.com>
To: Jeff Johnson <quic_jjohnson@...cinc.com>
Cc: Kirti Wankhede <kwankhede@...dia.com>, <kvm@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>, <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH v2] vfio-mdev: add missing MODULE_DESCRIPTION() macros

On Mon, 15 Jul 2024 12:27:09 -0700
Jeff Johnson <quic_jjohnson@...cinc.com> wrote:

> Since commit 1fffe7a34c89 ("script: modpost: emit a warning when the
> description is missing"), a module without a MODULE_DESCRIPTION() will
> result in a warning with make W=1. The following warnings are being
> observed in samples/vfio-mdev:
> 
> WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mtty.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mdpy.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mdpy-fb.o
> WARNING: modpost: missing MODULE_DESCRIPTION() in samples/vfio-mdev/mbochs.o
> 
> Add the missing invocations of the MODULE_DESCRIPTION() macro to these
> modules. And in the case of mtty.c, remove the now redundant instance
> of the MODULE_INFO() macro.
> 
> Signed-off-by: Jeff Johnson <quic_jjohnson@...cinc.com>
> ---
> Of the almost 300 patches I've submitted tree-wide to fix these
> issues, this is one of the 13 remaining. Hopefully this can make it
> via your tree into the 6.11 merge window. If not, Greg KH has
> indicated he'll take this as an -rc instead of waiting for 6.12.
> ---
> Changes in v2:
> - Updated the commit text to more fully describe the problem and solution.
> - Removed the MODULE_INFO() from mtty.c
> - Note I did not carry forward Kirti's Reviewed-by: due to this removal,
>   please re-review
> - Link to v1: https://lore.kernel.org/r/20240523-md-vfio-mdev-v1-1-4676cd532b10@quicinc.com
> ---
>  samples/vfio-mdev/mbochs.c  | 1 +
>  samples/vfio-mdev/mdpy-fb.c | 1 +
>  samples/vfio-mdev/mdpy.c    | 1 +
>  samples/vfio-mdev/mtty.c    | 2 +-
>  4 files changed, 4 insertions(+), 1 deletion(-)

Applied to vfio next branch for v6.11.  Thanks,

Alex

> 
> diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c
> index 9062598ea03d..836456837997 100644
> --- a/samples/vfio-mdev/mbochs.c
> +++ b/samples/vfio-mdev/mbochs.c
> @@ -88,6 +88,7 @@
>  #define STORE_LE32(addr, val)	(*(u32 *)addr = val)
>  
>  
> +MODULE_DESCRIPTION("Mediated virtual PCI display host device driver");
>  MODULE_LICENSE("GPL v2");
>  
>  static int max_mbytes = 256;
> diff --git a/samples/vfio-mdev/mdpy-fb.c b/samples/vfio-mdev/mdpy-fb.c
> index 4598bc28acd9..149af7f598f8 100644
> --- a/samples/vfio-mdev/mdpy-fb.c
> +++ b/samples/vfio-mdev/mdpy-fb.c
> @@ -229,4 +229,5 @@ static int __init mdpy_fb_init(void)
>  module_init(mdpy_fb_init);
>  
>  MODULE_DEVICE_TABLE(pci, mdpy_fb_pci_table);
> +MODULE_DESCRIPTION("Framebuffer driver for mdpy (mediated virtual pci display device)");
>  MODULE_LICENSE("GPL v2");
> diff --git a/samples/vfio-mdev/mdpy.c b/samples/vfio-mdev/mdpy.c
> index 27795501de6e..8104831ae125 100644
> --- a/samples/vfio-mdev/mdpy.c
> +++ b/samples/vfio-mdev/mdpy.c
> @@ -40,6 +40,7 @@
>  #define STORE_LE32(addr, val)	(*(u32 *)addr = val)
>  
>  
> +MODULE_DESCRIPTION("Mediated virtual PCI display host device driver");
>  MODULE_LICENSE("GPL v2");
>  
>  #define MDPY_TYPE_1 "vga"
> diff --git a/samples/vfio-mdev/mtty.c b/samples/vfio-mdev/mtty.c
> index 2284b3751240..b382c696c877 100644
> --- a/samples/vfio-mdev/mtty.c
> +++ b/samples/vfio-mdev/mtty.c
> @@ -2058,6 +2058,6 @@ module_init(mtty_dev_init)
>  module_exit(mtty_dev_exit)
>  
>  MODULE_LICENSE("GPL v2");
> -MODULE_INFO(supported, "Test driver that simulate serial port over PCI");
> +MODULE_DESCRIPTION("Test driver that simulate serial port over PCI");
>  MODULE_VERSION(VERSION_STRING);
>  MODULE_AUTHOR(DRIVER_AUTHOR);
> 
> ---
> base-commit: 0c3836482481200ead7b416ca80c68a29cfdaabd
> change-id: 20240523-md-vfio-mdev-381f74bf87f1
>