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[PATCH 3/3] PCI: hotplug: constify attribute_group structures.

Started byArvind Yadav <arvind.yadav.cs@gmail.com>
First post2017-07-11 11:30 +0200
Last post2017-07-11 21:00 +0200
Articles 2 — 2 participants

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  [PATCH 3/3] PCI: hotplug: constify attribute_group structures. Arvind Yadav <arvind.yadav.cs@gmail.com> - 2017-07-11 11:30 +0200
    Re: [PATCH 3/3] PCI: hotplug: constify attribute_group structures. Tyrel Datwyler <tyreld@linux.vnet.ibm.com> - 2017-07-11 21:00 +0200

#1684917 — [PATCH 3/3] PCI: hotplug: constify attribute_group structures.

FromArvind Yadav <arvind.yadav.cs@gmail.com>
Date2017-07-11 11:30 +0200
Subject[PATCH 3/3] PCI: hotplug: constify attribute_group structures.
Message-ID<u1ZEu-sY-5@gated-at.bofh.it>
attribute_groups are not supposed to change at runtime. All functions
working with attribute_groups provided by <linux/sysfs.h> work
with const attribute_group. So mark the non-const structs as const.

File size before:
   text	   data	    bss	    dec	    hex	filename
    418	    160	      8	    586	    24a	drivers/pci/hotplug/rpadlpar_sysfs.o

File size After adding 'const':
   text	   data	    bss	    dec	    hex	filename
    482	     96	      8	    586	    232	drivers/pci/hotplug/rpadlpar_sysfs.o

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
 drivers/pci/hotplug/rpadlpar_sysfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/hotplug/rpadlpar_sysfs.c b/drivers/pci/hotplug/rpadlpar_sysfs.c
index a796301..edb5d8a 100644
--- a/drivers/pci/hotplug/rpadlpar_sysfs.c
+++ b/drivers/pci/hotplug/rpadlpar_sysfs.c
@@ -102,7 +102,7 @@ static ssize_t remove_slot_show(struct kobject *kobj,
 	NULL,
 };
 
-static struct attribute_group dlpar_attr_group = {
+static const struct attribute_group dlpar_attr_group = {
 	.attrs = default_attrs,
 };
 
-- 
1.9.1

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#1685293

FromTyrel Datwyler <tyreld@linux.vnet.ibm.com>
Date2017-07-11 21:00 +0200
Message-ID<u28y5-5YV-3@gated-at.bofh.it>
In reply to#1684917
On 07/11/2017 02:28 AM, Arvind Yadav wrote:
> attribute_groups are not supposed to change at runtime. All functions
> working with attribute_groups provided by <linux/sysfs.h> work
> with const attribute_group. So mark the non-const structs as const.
> 
> File size before:
>    text	   data	    bss	    dec	    hex	filename
>     418	    160	      8	    586	    24a	drivers/pci/hotplug/rpadlpar_sysfs.o
> 
> File size After adding 'const':
>    text	   data	    bss	    dec	    hex	filename
>     482	     96	      8	    586	    232	drivers/pci/hotplug/rpadlpar_sysfs.o
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>

Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>

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