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mtd: parsers: tplink_safeloader: fix uninitialized variable bug

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On 64 bit systems, the highest 32 bits of the "offset" variable are
not initialized.  Also the existing code is not endian safe (it will
fail on big endian systems).  Change the type of "offset" to a u32.

Fixes: aec4d5f5ffd0 ("mtd: parsers: add TP-Link SafeLoader partitions table parser")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Rafał Miłecki <rafal@milecki.pl>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/Y1gCALFWXYYwqV1P@kili
This commit is contained in:
Dan Carpenter 2022-10-25 18:34:24 +03:00 committed by Miquel Raynal
parent 00a3588084
commit 6c0a15a3dc
1 changed files with 3 additions and 3 deletions
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6
drivers/mtd/parsers/tplink_safeloader.c
View file

@ -23,8 +23,8 @@ static void *mtd_parser_tplink_safeloader_read_table(struct mtd_info *mtd)
struct safeloader_cmn_header hdr;
struct device_node *np;
size_t bytes_read;
size_t offset;
size_t size;
u32 offset;
char *buf;
int err;
@ -34,14 +34,14 @@ static void *mtd_parser_tplink_safeloader_read_table(struct mtd_info *mtd)
else
np = of_get_child_by_name(np, "partitions");
if (of_property_read_u32(np, "partitions-table-offset", (u32 *)&offset)) {
if (of_property_read_u32(np, "partitions-table-offset", &offset)) {
pr_err("Failed to get partitions table offset\n");
goto err_put;
}
err = mtd_read(mtd, offset, sizeof(hdr), &bytes_read, (uint8_t *)&hdr);
if (err && !mtd_is_bitflip(err)) {
pr_err("Failed to read from %s at 0x%zx\n", mtd->name, offset);
pr_err("Failed to read from %s at 0x%x\n", mtd->name, offset);
goto err_put;
}