| Message ID | 1421278927-3237-1-git-send-email-dehrenberg@chromium.org |
|---|---|
| State | Rejected |
| Headers | show |
Hi, Please ignore this patch. I've found a way to do achieve the same thing for my without exporting the major number--I can just check whether the block device's disk_name is ubiblock. Thanks, Dan On Wed, Jan 14, 2015 at 3:42 PM, Dan Ehrenberg <dehrenberg@chromium.org> wrote: > This patch exports the ubiblock major number so that it is usable from > other pieces of kernel code. This is useful, for example, if you have > another piece of kernel code which wants to determine whether a block > device is an ubiblock device or not. > > Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org> > --- > drivers/mtd/ubi/block.c | 3 ++- > include/linux/mtd/ubi.h | 2 ++ > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c > index 6c8333d..faf35d4 100644 > --- a/drivers/mtd/ubi/block.c > +++ b/drivers/mtd/ubi/block.c > @@ -94,7 +94,8 @@ struct ubiblock { > /* Linked list of all ubiblock instances */ > static LIST_HEAD(ubiblock_devices); > static DEFINE_MUTEX(devices_mutex); > -static int ubiblock_major; > +int ubiblock_major; > +EXPORT_SYMBOL(ubiblock_major); > > static int __init ubiblock_set_param(const char *val, > const struct kernel_param *kp) > diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h > index c3918a0..8603d87 100644 > --- a/include/linux/mtd/ubi.h > +++ b/include/linux/mtd/ubi.h > @@ -230,4 +230,6 @@ static inline int ubi_read(struct ubi_volume_desc *desc, int lnum, char *buf, > { > return ubi_leb_read(desc, lnum, buf, offset, len, 0); > } > + > +extern int ubiblock_major; > #endif /* !__LINUX_UBI_H__ */ > -- > 2.2.0.rc0.207.ga3a616c >
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index 6c8333d..faf35d4 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -94,7 +94,8 @@ struct ubiblock { /* Linked list of all ubiblock instances */ static LIST_HEAD(ubiblock_devices); static DEFINE_MUTEX(devices_mutex); -static int ubiblock_major; +int ubiblock_major; +EXPORT_SYMBOL(ubiblock_major); static int __init ubiblock_set_param(const char *val, const struct kernel_param *kp) diff --git a/include/linux/mtd/ubi.h b/include/linux/mtd/ubi.h index c3918a0..8603d87 100644 --- a/include/linux/mtd/ubi.h +++ b/include/linux/mtd/ubi.h @@ -230,4 +230,6 @@ static inline int ubi_read(struct ubi_volume_desc *desc, int lnum, char *buf, { return ubi_leb_read(desc, lnum, buf, offset, len, 0); } + +extern int ubiblock_major; #endif /* !__LINUX_UBI_H__ */
This patch exports the ubiblock major number so that it is usable from other pieces of kernel code. This is useful, for example, if you have another piece of kernel code which wants to determine whether a block device is an ubiblock device or not. Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org> --- drivers/mtd/ubi/block.c | 3 ++- include/linux/mtd/ubi.h | 2 ++ 2 files changed, 4 insertions(+), 1 deletion(-)