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sony-laptop: only show the handles sysfs file in debug mode 

It makes no sense to expose this type of information to userspace unless
the driver was explicitly loaded with the debug option.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
This commit is contained in:
Mattia Dongili 2011-04-05 23:38:35 +09:00 committed by Matthew Garrett
parent 8713b04ab8
commit 855b8bc995
1 changed files with 14 additions and 11 deletions
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25
drivers/platform/x86/sony-laptop.c
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@ -771,11 +771,6 @@ static int sony_nc_handles_setup(struct platform_device *pd)
if (!handles)
return -ENOMEM;
sysfs_attr_init(&handles->devattr.attr);
handles->devattr.attr.name = "handles";
handles->devattr.attr.mode = S_IRUGO;
handles->devattr.show = sony_nc_handles_show;
for (i = 0; i < ARRAY_SIZE(handles->cap); i++) {
if (!acpi_callsetfunc(sony_nc_acpi_handle,
"SN00", i + 0x20, &result)) {
@ -785,11 +780,18 @@ static int sony_nc_handles_setup(struct platform_device *pd)
}
}
/* allow reading capabilities via sysfs */
if (device_create_file(&pd->dev, &handles->devattr)) {
kfree(handles);
handles = NULL;
return -1;
if (debug) {
sysfs_attr_init(&handles->devattr.attr);
handles->devattr.attr.name = "handles";
handles->devattr.attr.mode = S_IRUGO;
handles->devattr.show = sony_nc_handles_show;
/* allow reading capabilities via sysfs */
if (device_create_file(&pd->dev, &handles->devattr)) {
kfree(handles);
handles = NULL;
return -1;
}
}
return 0;
@ -798,7 +800,8 @@ static int sony_nc_handles_setup(struct platform_device *pd)
static int sony_nc_handles_cleanup(struct platform_device *pd)
{
if (handles) {
device_remove_file(&pd->dev, &handles->devattr);
if (debug)
device_remove_file(&pd->dev, &handles->devattr);
kfree(handles);
handles = NULL;
}