thr3ads.net - Linux Virtualization - [PATCH 3/3] Fix ERROR: code indent should use tabs where possible [May 2017]

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Maciek Fijalkowski

2017-May-14 17:51 UTC

[PATCH 1/3] Fix ERROR: trailing statements should be on next line

From: Maciej Fijalkowski <macfij7 at wp.pl>

Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>
---
 drivers/net/virtio_net.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 9320d96..f20dfb8 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -217,7 +217,8 @@ static void give_pages(struct receive_queue *rq, struct page
*page)
 	struct page *end;
 
 	/* Find end of list, sew whole thing into vi->rq.pages. */
-	for (end = page; end->private; end = (struct page *)end->private);
+	for (end = page; end->private; end = (struct page *)end->private)
+		;
 	end->private = (unsigned long)rq->pages;
 	rq->pages = page;
 }
-- 
2.4.11

Maciek Fijalkowski

2017-May-14 17:51 UTC

head link

[PATCH 2/3] Fix ERROR: Macros with complex values should be enclosed in parentheses

From: Maciej Fijalkowski <macfij7 at wp.pl>

Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>
---
 drivers/net/virtio_net.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index f20dfb8..6c8170c 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2663,7 +2663,7 @@ static struct virtio_device_id id_table[] = {
 };
 
 #define VIRTNET_FEATURES \
-	VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
+	(VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
 	VIRTIO_NET_F_MAC, \
 	VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
 	VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, \
@@ -2672,7 +2672,7 @@ static struct virtio_device_id id_table[] = {
 	VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \
 	VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \
 	VIRTIO_NET_F_CTRL_MAC_ADDR, \
-	VIRTIO_NET_F_MTU
+	VIRTIO_NET_F_MTU)
 
 static unsigned int features[] = {
 	VIRTNET_FEATURES,
-- 
2.4.11

Maciek Fijalkowski

2017-May-14 17:51 UTC

head link

[PATCH 3/3] Fix ERROR: code indent should use tabs where possible

From: Maciej Fijalkowski <macfij7 at wp.pl>

Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>
---
 drivers/net/virtio_net.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 6c8170c..5d71e9f 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -2717,7 +2717,7 @@ static __init int virtio_net_driver_init(void)
 	if (ret)
 		goto err_dead;
 
-        ret = register_virtio_driver(&virtio_net_driver);
+	ret = register_virtio_driver(&virtio_net_driver);
 	if (ret)
 		goto err_virtio;
 	return 0;
-- 
2.4.11

kbuild test robot

2017-May-14 18:48 UTC

head link

[PATCH 2/3] Fix ERROR: Macros with complex values should be enclosed in parentheses

Hi Maciej,

[auto build test ERROR on net-next/master]
[also build test ERROR on v4.12-rc1 next-20170512]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system]

url:   
https://github.com/0day-ci/linux/commits/Maciek-Fijalkowski/Fix-ERROR-trailing-statements-should-be-on-next-line/20170515-021304
config: x86_64-acpi-redef (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All error/warnings (new ones prefixed by >>):

   drivers//net/virtio_net.c:2647:20: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     (VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
                       ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2647:45: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     (VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
                                                ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2648:18: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_MAC, \
                     ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2649:24: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
                           ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2649:47: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
                                                  ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2649:71: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
                                                                         
^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2650:23: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, \
                          ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2650:48: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, \
                                                   ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2650:73: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, \
                                                                           
^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2651:24: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_GUEST_ECN, VIRTIO_NET_F_GUEST_UFO, \
                           ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2651:48: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_GUEST_ECN, VIRTIO_NET_F_GUEST_UFO, \
                                                   ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2652:24: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ, \
                           ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2652:45: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ, \
                                                ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2652:67: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_MRG_RXBUF, VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ, \
                                                                     
^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2653:22: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \
                         ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2653:46: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \
                                                 ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2654:29: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \
                                ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2654:46: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \
                                                 ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~
   drivers//net/virtio_net.c:2655:28: warning: left-hand operand of comma
expression has no effect [-Wunused-value]
     VIRTIO_NET_F_CTRL_MAC_ADDR, \
                               ^>> drivers//net/virtio_net.c:2659:2: note: in expansion of macro
'VIRTNET_FEATURES'     VIRTNET_FEATURES,
     ^~~~~~~~~~~~~~~~>> drivers//net/virtio_net.c:2647:2: error: initializer element is not
constant     (VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
     ^

vim +/VIRTNET_FEATURES +2659 drivers//net/virtio_net.c

296f96fc Rusty Russell      2007-10-22  2641  static struct virtio_device_id
id_table[] = {
296f96fc Rusty Russell      2007-10-22  2642  	{ VIRTIO_ID_NET,
VIRTIO_DEV_ANY_ID },
296f96fc Rusty Russell      2007-10-22  2643  	{ 0 },
296f96fc Rusty Russell      2007-10-22  2644  };
296f96fc Rusty Russell      2007-10-22  2645  
f3358507 Michael S. Tsirkin 2016-11-04  2646  #define VIRTNET_FEATURES \
d66a5bc5 Maciej Fijalkowski 2017-05-14 @2647  	(VIRTIO_NET_F_CSUM,
VIRTIO_NET_F_GUEST_CSUM, \
f3358507 Michael S. Tsirkin 2016-11-04  2648  	VIRTIO_NET_F_MAC, \
f3358507 Michael S. Tsirkin 2016-11-04  2649  	VIRTIO_NET_F_HOST_TSO4,
VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
f3358507 Michael S. Tsirkin 2016-11-04  2650  	VIRTIO_NET_F_HOST_ECN,
VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6, \
f3358507 Michael S. Tsirkin 2016-11-04  2651  	VIRTIO_NET_F_GUEST_ECN,
VIRTIO_NET_F_GUEST_UFO, \
f3358507 Michael S. Tsirkin 2016-11-04  2652  	VIRTIO_NET_F_MRG_RXBUF,
VIRTIO_NET_F_STATUS, VIRTIO_NET_F_CTRL_VQ, \
f3358507 Michael S. Tsirkin 2016-11-04  2653  	VIRTIO_NET_F_CTRL_RX,
VIRTIO_NET_F_CTRL_VLAN, \
f3358507 Michael S. Tsirkin 2016-11-04  2654  	VIRTIO_NET_F_GUEST_ANNOUNCE,
VIRTIO_NET_F_MQ, \
f3358507 Michael S. Tsirkin 2016-11-04  2655  	VIRTIO_NET_F_CTRL_MAC_ADDR, \
d66a5bc5 Maciej Fijalkowski 2017-05-14  2656  	VIRTIO_NET_F_MTU)
f3358507 Michael S. Tsirkin 2016-11-04  2657  
c45a6816 Rusty Russell      2008-05-02  2658  static unsigned int features[] = {
f3358507 Michael S. Tsirkin 2016-11-04 @2659  	VIRTNET_FEATURES,
f3358507 Michael S. Tsirkin 2016-11-04  2660  };
f3358507 Michael S. Tsirkin 2016-11-04  2661  
f3358507 Michael S. Tsirkin 2016-11-04  2662  static unsigned int
features_legacy[] = {

:::::: The code at line 2659 was first introduced by commit
:::::: f3358507c11999c91abf54744658bccd49b5879c virtio-net: drop legacy features
in virtio 1 mode

:::::: TO: Michael S. Tsirkin <mst at redhat.com>
:::::: CC: David S. Miller <davem at davemloft.net>

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
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Andrew Lunn

2017-May-15 00:25 UTC

head link

[PATCH 2/3] Fix ERROR: Macros with complex values should be enclosed in parentheses

On Sun, May 14, 2017 at 07:51:29PM +0200, Maciek Fijalkowski
wrote:> From: Maciej Fijalkowski <macfij7 at wp.pl>
Hi Maciek

Please include some commit message, even if it is just the checkpatch
error you are fixing.

Please include the subsystem/driver you are patch in the subject line.
Also, your subject of Fix ERROR: makes it sound a lot worse than it
is. 

net: virtio: Fix checkpatch error Complex macros should use ()

Also, you should at least compile test your change. It is clearly
wrong, as shown by 0-day.

       Andrew

Michael S. Tsirkin

2017-May-15 02:56 UTC

head link

[PATCH 2/3] Fix ERROR: Macros with complex values should be enclosed in parentheses

On Sun, May 14, 2017 at 07:51:29PM +0200, Maciek Fijalkowski
wrote:> From: Maciej Fijalkowski <macfij7 at wp.pl>
> 
> Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>
This is not a complex value.
> ---
>  drivers/net/virtio_net.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index f20dfb8..6c8170c 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -2663,7 +2663,7 @@ static struct virtio_device_id id_table[] = {
>  };
>  
>  #define VIRTNET_FEATURES \
> -	VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
> +	(VIRTIO_NET_F_CSUM, VIRTIO_NET_F_GUEST_CSUM, \
>  	VIRTIO_NET_F_MAC, \
>  	VIRTIO_NET_F_HOST_TSO4, VIRTIO_NET_F_HOST_UFO, VIRTIO_NET_F_HOST_TSO6, \
>  	VIRTIO_NET_F_HOST_ECN, VIRTIO_NET_F_GUEST_TSO4, VIRTIO_NET_F_GUEST_TSO6,
\
> @@ -2672,7 +2672,7 @@ static struct virtio_device_id id_table[] = {
>  	VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \
>  	VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \
>  	VIRTIO_NET_F_CTRL_MAC_ADDR, \
> -	VIRTIO_NET_F_MTU
> +	VIRTIO_NET_F_MTU)
>  
>  static unsigned int features[] = {
>  	VIRTNET_FEATURES,
> -- 
> 2.4.11

Michael S. Tsirkin

2017-May-15 02:58 UTC

head link

[PATCH 1/3] Fix ERROR: trailing statements should be on next line

On Sun, May 14, 2017 at 07:51:28PM +0200, Maciek Fijalkowski
wrote:> From: Maciej Fijalkowski <macfij7 at wp.pl>
> 
> Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>
I prefer the original form - ; isn't a full statement.
> ---
>  drivers/net/virtio_net.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 9320d96..f20dfb8 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -217,7 +217,8 @@ static void give_pages(struct receive_queue *rq, struct
page *page)
>  	struct page *end;
>  
>  	/* Find end of list, sew whole thing into vi->rq.pages. */
> -	for (end = page; end->private; end = (struct page *)end->private);
> +	for (end = page; end->private; end = (struct page *)end->private)
> +		;
>  	end->private = (unsigned long)rq->pages;
>  	rq->pages = page;
>  }
> -- 
> 2.4.11

Michael S. Tsirkin

2017-May-15 03:00 UTC

head link

[PATCH 3/3] Fix ERROR: code indent should use tabs where possible

On Sun, May 14, 2017 at 07:51:30PM +0200, Maciek Fijalkowski
wrote:> From: Maciej Fijalkowski <macfij7 at wp.pl>
> 
> Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>

Acked-by: Michael S. Tsirkin <mst at redhat.com>

But you really want to fix the subject. Make it less verbose
drop upper case and add info about module. Something like:

virtio_net: coding style fix: use tabs for indent

Also, you misspelled Jason's email.
> ---
>  drivers/net/virtio_net.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> index 6c8170c..5d71e9f 100644
> --- a/drivers/net/virtio_net.c
> +++ b/drivers/net/virtio_net.c
> @@ -2717,7 +2717,7 @@ static __init int virtio_net_driver_init(void)
>  	if (ret)
>  		goto err_dead;
>  
> -        ret = register_virtio_driver(&virtio_net_driver);
> +	ret = register_virtio_driver(&virtio_net_driver);
>  	if (ret)
>  		goto err_virtio;
>  	return 0;
> -- 
> 2.4.11

Alex Williamson

2017-May-15 03:20 UTC

head link

[PATCH 1/3] Fix ERROR: trailing statements should be on next line

On Mon, 15 May 2017 05:58:05 +0300
"Michael S. Tsirkin" <mst at redhat.com> wrote:
> On Sun, May 14, 2017 at 07:51:28PM +0200, Maciek Fijalkowski wrote:
> > From: Maciej Fijalkowski <macfij7 at wp.pl>
> > 
> > Signed-off-by: Maciej Fijalkowski <macfij7 at wp.pl>  
> 
> I prefer the original form - ; isn't a full statement.
> 
> > ---
> >  drivers/net/virtio_net.c | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
> > index 9320d96..f20dfb8 100644
> > --- a/drivers/net/virtio_net.c
> > +++ b/drivers/net/virtio_net.c
> > @@ -217,7 +217,8 @@ static void give_pages(struct receive_queue *rq,
struct page *page)
> >  	struct page *end;
> >  
> >  	/* Find end of list, sew whole thing into vi->rq.pages. */
> > -	for (end = page; end->private; end = (struct page
*)end->private);
> > +	for (end = page; end->private; end = (struct page
*)end->private)
> > +		;
FWIW, I generally like to put a comment on the next line to make it
abundantly clear that there's nothing in the body of the loop, it's
also more aesthetically pleasing than a semi-colon on the line by
itself, ex. /* Nothing */;  It's just too easy to misinterpret the
loop otherwise, especially without gratuitous white space.  Thanks,

Alex

> >  	end->private = (unsigned long)rq->pages;
> >  	rq->pages = page;
> >  }
> > -- 
> > 2.4.11  
> _______________________________________________
> Virtualization mailing list
> Virtualization at lists.linux-foundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/virtualization

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