From 1978620045a5b482a5e8ba61e588992b8f57acab Mon Sep 17 00:00:00 2001
From: John Crispin <john@openwrt.org>
Date: Mon, 7 Apr 2014 15:10:18 +0000
Subject: [PATCH] kernel: add a ubi forced detach ioctl
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 40417
---
.../413-mtd-ubi-forced-detach.patch | 41 +++++++++++++++++++
1 file changed, 41 insertions(+)
create mode 100644 target/linux/generic/patches-3.10/413-mtd-ubi-forced-detach.patch
diff --git a/target/linux/generic/patches-3.10/413-mtd-ubi-forced-detach.patch b/target/linux/generic/patches-3.10/413-mtd-ubi-forced-detach.patch
new file mode 100644
index 0000000000..0d4fff1ee5
--- /dev/null
+++ b/target/linux/generic/patches-3.10/413-mtd-ubi-forced-detach.patch
@@ -0,0 +1,41 @@
+--- a/drivers/mtd/ubi/cdev.c
++++ b/drivers/mtd/ubi/cdev.c
+@@ -974,7 +974,7 @@ static long ubi_cdev_ioctl(struct file *
+ static long ctrl_cdev_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+ {
+- int err = 0;
++ int err = 0, force = 0;
+ void __user *argp = (void __user *)arg;
+
+ if (!capable(CAP_SYS_RESOURCE))
+@@ -1024,6 +1024,10 @@ static long ctrl_cdev_ioctl(struct file
+ }
+
+ /* Detach an MTD device command */
++ case UBI_IOCFDET:
++ force = 1;
++ /* no break */
++
+ case UBI_IOCDET:
+ {
+ int ubi_num;
+@@ -1036,7 +1040,7 @@ static long ctrl_cdev_ioctl(struct file
+ }
+
+ mutex_lock(&ubi_devices_mutex);
+- err = ubi_detach_mtd_dev(ubi_num, 0);
++ err = ubi_detach_mtd_dev(ubi_num, force);
+ mutex_unlock(&ubi_devices_mutex);
+ break;
+ }
+--- a/include/uapi/mtd/ubi-user.h
++++ b/include/uapi/mtd/ubi-user.h
+@@ -168,6 +168,7 @@
+ #define UBI_IOCATT _IOW(UBI_CTRL_IOC_MAGIC, 64, struct ubi_attach_req)
+ /* Detach an MTD device */
+ #define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, __s32)
++#define UBI_IOCFDET _IOW(UBI_CTRL_IOC_MAGIC, 99, __s32)
+
+ /* ioctl commands of UBI volume character devices */
+
--
2.25.1