Crap! I forgot to pass -v2 to git format patch.
On Mon, 19 Nov 2018 12:51:13 +0100 Boris Brezillon boris.brezillon@bootlin.com wrote:
We need to parse mtdparts/mtids again everytime a device has been added/removed from the MTD list, but there's currently no way to know when such an update has been done.
Add an ->updated field to the idr struct that we set to true every time a device is added/removed and expose a function returning the value of this field and resetting it to false.
Signed-off-by: Boris Brezillon boris.brezillon@bootlin.com
Changes in v2:
- None
drivers/mtd/mtdcore.c | 16 +++++++++++++++- include/linux/mtd/mtd.h | 1 + 2 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index fb6c779abbfe..7a15ded8c883 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -87,14 +87,17 @@ struct idr_layer {
struct idr { struct idr_layer id[MAX_IDR_ID];
- bool updated;
};
#define DEFINE_IDR(name) struct idr name;
void idr_remove(struct idr *idp, int id) {
- if (idp->id[id].used)
if (idp->id[id].used) { idp->id[id].used = 0;
idp->updated = true;}
return;
} @@ -134,6 +137,7 @@ int idr_alloc(struct idr *idp, void *ptr, int start, int end, gfp_t gfp_mask) if (idl->used == 0) { idl->used = 1; idl->ptr = ptr;
idp->updated = true; return i;@@ -155,6 +159,16 @@ struct mtd_info *__mtd_next_device(int i) } EXPORT_SYMBOL_GPL(__mtd_next_device);
+bool mtd_dev_list_updated(void) +{
- if (mtd_idr.updated) {
mtd_idr.updated = false;return true;- }
- return false;
+}
#ifndef __UBOOT__ static LIST_HEAD(mtd_notifiers);
diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index 68e591532492..d20ebd820289 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -581,6 +581,7 @@ int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off, void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset, const uint64_t length, uint64_t *len_incl_bad, int *truncated); +bool mtd_dev_list_updated(void);
/* drivers/mtd/mtd_uboot.c */ int mtd_search_alternate_name(const char *mtdname, char *altname,