From 2b152873469d2b0751e8b726df6415f05e37632e Mon Sep 17 00:00:00 2001
From: Jerome Marchand <jmarchan@redhat.com>
Date: Fri, 17 Dec 2010 16:59:33 +0100
Subject: [PATCH] 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>
---
drivers/staging/zram/Kconfig | 2 +-
drivers/staging/zram/zram_drv.c | 4 ----
drivers/staging/zram/zram_sysfs.c | 4 ----
3 files changed, 1 insertion(+), 9 deletions(-)
diff --git a/drivers/staging/zram/Kconfig b/drivers/staging/zram/Kconfig
index da079f8d6e3dd..d3982e6fdb40f 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 5415712f01f80..0ab931e9ee7e0 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 6b3cf00b0ff42..ad62db221b6fd 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 */
--
2.30.2