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authorChristian Hitz <christian.hitz@aizo.com>2011-10-12 09:32:05 +0200
committerScott Wood <scottwood@freescale.com>2012-01-26 16:09:02 -0600
commit5454ddbc9b6be1b3a8fe1018bda697ac2b33b202 (patch)
treee95d6010a9508907b67b29a1d67dda78ab9b420d /drivers/mtd
parentff8a8a718341e42af8642f01ce630d4a77c58f82 (diff)
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nand: Sanitize ONFI strings.
[backport from linux commit 02f8c6aee8df3cdc935e9bdd4f2d020306035dbe] This is part of the synchronization with the nand driver to the Linux 3.0 state. Signed-off-by: Christian Hitz <christian.hitz@aizo.com> Cc: Scott Wood <scottwood@freescale.com> Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/nand_base.c23
1 files changed, 22 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index ed2640c..8ab8303 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -2477,10 +2477,29 @@ static void nand_set_defaults(struct nand_chip *chip, int busw)
}
#ifdef CONFIG_SYS_NAND_ONFI_DETECTION
+/*
+ * sanitize ONFI strings so we can safely print them
+ */
+static void sanitize_string(char *s, size_t len)
+{
+ ssize_t i;
+
+ /* null terminate */
+ s[len - 1] = 0;
+
+ /* remove non printable chars */
+ for (i = 0; i < len - 1; i++) {
+ if (s[i] < ' ' || s[i] > 127)
+ s[i] = '?';
+ }
+
+ /* remove trailing spaces */
+ strim(s);
+}
+
static u16 onfi_crc16(u16 crc, u8 const *p, size_t len)
{
int i;
-
while (len--) {
crc ^= *p++ << 8;
for (i = 0; i < 8; i++)
@@ -2541,6 +2560,8 @@ static int nand_flash_detect_onfi(struct mtd_info *mtd, struct nand_chip *chip,
return 0;
}
+ sanitize_string(p->manufacturer, sizeof(p->manufacturer));
+ sanitize_string(p->model, sizeof(p->model));
if (!mtd->name)
mtd->name = p->model;
mtd->writesize = le32_to_cpu(p->byte_per_page);