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| author | Linus Walleij <linus.walleij@linaro.org> | 2019-05-02 16:30:33 +0200 |
|---|---|---|
| committer | Richard Weinberger <richard@nod.at> | 2019-05-06 21:48:46 +0200 |
| commit | 32e68bea9338101253b72f594796c76acd68da11 (patch) | |
| tree | 5b8fb85acf2ce8df2eb06fedb834fdbb89aad401 /drivers/mtd/parsers | |
| parent | ff827b4e8d3606a275b92b159c7e9ae45ad2c361 (diff) | |
| download | linux-stable-32e68bea9338101253b72f594796c76acd68da11.tar.gz linux-stable-32e68bea9338101253b72f594796c76acd68da11.tar.bz2 linux-stable-32e68bea9338101253b72f594796c76acd68da11.zip | |
mtd: afs: factor the IIS read into partition parser
Factor the IIS (Image Information Structure) reading into the
partition parser, giving us a single, clean partition parser
function.
Cc: Ryan Harkin <ryan.harkin@linaro.org>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'drivers/mtd/parsers')
| -rw-r--r-- | drivers/mtd/parsers/afs.c | 59 |
1 files changed, 20 insertions, 39 deletions
diff --git a/drivers/mtd/parsers/afs.c b/drivers/mtd/parsers/afs.c index 8ff82a548252..72c688b8a383 100644 --- a/drivers/mtd/parsers/afs.c +++ b/drivers/mtd/parsers/afs.c @@ -88,42 +88,6 @@ static bool afs_is_v1(struct mtd_info *mtd, u_int off) return (magic == AFSV1_FOOTER_MAGIC); } -static int -afs_read_iis_v1(struct mtd_info *mtd, struct image_info_v1 *iis, u_int ptr) -{ - size_t sz; - int ret, i; - - memset(iis, 0, sizeof(*iis)); - ret = mtd_read(mtd, ptr, sizeof(*iis), &sz, (u_char *)iis); - if (ret < 0) - goto failed; - - if (sz != sizeof(*iis)) { - ret = -EINVAL; - goto failed; - } - - ret = 0; - - /* - * Validate the name - it must be NUL terminated. - */ - for (i = 0; i < sizeof(iis->name); i++) - if (iis->name[i] == '\0') - break; - - if (i < sizeof(iis->name)) - ret = 1; - - return ret; - - failed: - printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", - ptr, ret); - return ret; -} - static int afs_parse_v1_partition(struct mtd_info *mtd, u_int off, struct mtd_partition *part) { @@ -139,6 +103,7 @@ static int afs_parse_v1_partition(struct mtd_info *mtd, u_int ptr; size_t sz; int ret; + int i; /* * This is the address mask; we use this to mask off out of @@ -185,9 +150,25 @@ static int afs_parse_v1_partition(struct mtd_info *mtd, return 0; /* Read the image info block */ - ret = afs_read_iis_v1(mtd, &iis, iis_ptr); - if (ret < 0) - return ret; + memset(&iis, 0, sizeof(iis)); + ret = mtd_read(mtd, iis_ptr, sizeof(iis), &sz, (u_char *)&iis); + if (ret < 0) { + printk(KERN_ERR "AFS: mtd read failed at 0x%x: %d\n", + iis_ptr, ret); + return -EINVAL; + } + + if (sz != sizeof(iis)) + return -EINVAL; + + /* + * Validate the name - it must be NUL terminated. + */ + for (i = 0; i < sizeof(iis.name); i++) + if (iis.name[i] == '\0') + break; + if (i > sizeof(iis.name)) + return -EINVAL; part->name = kstrdup(iis.name, GFP_KERNEL); if (!part->name) |