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authorJerome Marchand <jmarchan@redhat.com>2010-12-17 18:59:33 +0300
committerGreg Kroah-Hartman <gregkh@suse.de>2011-01-21 03:06:18 +0300
commit2b152873469d2b0751e8b726df6415f05e37632e (patch)
tree46600a993b1fb11222f0b50c571a041b00111fa2 /drivers/staging/zram
parent98069c3f1cd353eda61d8e11ce40f83d5c5a99f3 (diff)
downloadlinux-2b152873469d2b0751e8b726df6415f05e37632e.tar.xz
Staging: zram: make ZRAM depends on SYSFS
We can not configure zram device without sysfs anyway, so make zram depends on it. Signed-off-by: Jerome Marchand <jmarchan@redhat.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/zram')
-rw-r--r--drivers/staging/zram/Kconfig2
-rw-r--r--drivers/staging/zram/zram_drv.c4
-rw-r--r--drivers/staging/zram/zram_sysfs.c4
3 files changed, 1 insertions, 9 deletions
diff --git a/drivers/staging/zram/Kconfig b/drivers/staging/zram/Kconfig
index da079f8d6e3d..d3982e6fdb40 100644
--- a/drivers/staging/zram/Kconfig
+++ b/drivers/staging/zram/Kconfig
@@ -1,6 +1,6 @@
config ZRAM
tristate "Compressed RAM block device support"
- depends on BLOCK
+ depends on BLOCK && SYSFS
select LZO_COMPRESS
select LZO_DECOMPRESS
default n
diff --git a/drivers/staging/zram/zram_drv.c b/drivers/staging/zram/zram_drv.c
index 5415712f01f8..0ab931e9ee7e 100644
--- a/drivers/staging/zram/zram_drv.c
+++ b/drivers/staging/zram/zram_drv.c
@@ -626,14 +626,12 @@ static int create_device(struct zram *zram, int device_id)
add_disk(zram->disk);
-#ifdef CONFIG_SYSFS
ret = sysfs_create_group(&disk_to_dev(zram->disk)->kobj,
&zram_disk_attr_group);
if (ret < 0) {
pr_warning("Error creating sysfs group");
goto out;
}
-#endif
zram->init_done = 0;
@@ -643,10 +641,8 @@ out:
static void destroy_device(struct zram *zram)
{
-#ifdef CONFIG_SYSFS
sysfs_remove_group(&disk_to_dev(zram->disk)->kobj,
&zram_disk_attr_group);
-#endif
if (zram->disk) {
del_gendisk(zram->disk);
diff --git a/drivers/staging/zram/zram_sysfs.c b/drivers/staging/zram/zram_sysfs.c
index 6b3cf00b0ff4..ad62db221b6f 100644
--- a/drivers/staging/zram/zram_sysfs.c
+++ b/drivers/staging/zram/zram_sysfs.c
@@ -17,8 +17,6 @@
#include "zram_drv.h"
-#ifdef CONFIG_SYSFS
-
static u64 zram_stat64_read(struct zram *zram, u64 *v)
{
u64 val;
@@ -220,5 +218,3 @@ static struct attribute *zram_disk_attrs[] = {
struct attribute_group zram_disk_attr_group = {
.attrs = zram_disk_attrs,
};
-
-#endif /* CONFIG_SYSFS */