| Message ID | 20231030140106.1393384-1-hch@lst.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | [1/2] ubi: block: don't use gendisk->first_minor for the idr_alloc return value | expand |
On Mon, Oct 30, 2023 at 03:01:05PM +0100, Christoph Hellwig wrote: > idr_alloc returns an int that is either a negative errno, or the > identifier actually allocated. Use signed integer ret variable to > catch the return value and only assign it to gd->first_minor to prepare > for marking the first_minor field in the gendisk structure as unsigned. > > Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Daniel Golle <daniel@makrotopia.org> > --- > drivers/mtd/ubi/block.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c > index 437c5b83ffe513..51d00b518d3197 100644 > --- a/drivers/mtd/ubi/block.c > +++ b/drivers/mtd/ubi/block.c > @@ -402,13 +402,14 @@ int ubiblock_create(struct ubi_volume_info *vi) > gd->fops = &ubiblock_ops; > gd->major = ubiblock_major; > gd->minors = 1; > - gd->first_minor = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); > - if (gd->first_minor < 0) { > + ret = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); > + if (ret < 0) { > dev_err(disk_to_dev(gd), > "block: dynamic minor allocation failed"); > ret = -ENODEV; > goto out_cleanup_disk; > } > + gd->first_minor = ret; > gd->flags |= GENHD_FL_NO_PART; > gd->private_data = dev; > sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id); > -- > 2.39.2 >
----- Ursprüngliche Mail ----- > idr_alloc returns an int that is either a negative errno, or the > identifier actually allocated. Use signed integer ret variable to > catch the return value and only assign it to gd->first_minor to prepare > for marking the first_minor field in the gendisk structure as unsigned. > > Signed-off-by: Christoph Hellwig <hch@lst.de> > --- > drivers/mtd/ubi/block.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-) > > diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c > index 437c5b83ffe513..51d00b518d3197 100644 > --- a/drivers/mtd/ubi/block.c > +++ b/drivers/mtd/ubi/block.c > @@ -402,13 +402,14 @@ int ubiblock_create(struct ubi_volume_info *vi) > gd->fops = &ubiblock_ops; > gd->major = ubiblock_major; > gd->minors = 1; > - gd->first_minor = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); > - if (gd->first_minor < 0) { > + ret = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); > + if (ret < 0) { > dev_err(disk_to_dev(gd), > "block: dynamic minor allocation failed"); > ret = -ENODEV; > goto out_cleanup_disk; > } > + gd->first_minor = ret; Super minor nit, redundant space. Acked-by: Richard Weinberger <richard@nod.at> Thanks, //richard
diff --git a/drivers/mtd/ubi/block.c b/drivers/mtd/ubi/block.c index 437c5b83ffe513..51d00b518d3197 100644 --- a/drivers/mtd/ubi/block.c +++ b/drivers/mtd/ubi/block.c @@ -402,13 +402,14 @@ int ubiblock_create(struct ubi_volume_info *vi) gd->fops = &ubiblock_ops; gd->major = ubiblock_major; gd->minors = 1; - gd->first_minor = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); - if (gd->first_minor < 0) { + ret = idr_alloc(&ubiblock_minor_idr, dev, 0, 0, GFP_KERNEL); + if (ret < 0) { dev_err(disk_to_dev(gd), "block: dynamic minor allocation failed"); ret = -ENODEV; goto out_cleanup_disk; } + gd->first_minor = ret; gd->flags |= GENHD_FL_NO_PART; gd->private_data = dev; sprintf(gd->disk_name, "ubiblock%d_%d", dev->ubi_num, dev->vol_id);
idr_alloc returns an int that is either a negative errno, or the identifier actually allocated. Use signed integer ret variable to catch the return value and only assign it to gd->first_minor to prepare for marking the first_minor field in the gendisk structure as unsigned. Signed-off-by: Christoph Hellwig <hch@lst.de> --- drivers/mtd/ubi/block.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)