diff options
| author | Rafał Miłecki <zajec5@gmail.com> | 2015-05-12 18:46:11 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2015-06-21 21:52:20 +0200 |
| commit | d28c9a55c297db61018744007b6c86abff308751 (patch) | |
| tree | 501dfa0f48954c1b67a6ebb055244180cb753a70 /arch/mips/bcm47xx | |
| parent | 2fb7ac5ba680aee0a22bd5cd6fb5c14d248a313d (diff) | |
MIPS: BCM47XX: Make sure NVRAM buffer ends with \0
This will simplify reading its contents.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Hante Meuleman <meuleman@broadcom.com>
Cc: Ian Kent <raven@themaw.net>
Patchwork: https://patchwork.linux-mips.org/patch/10031/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/bcm47xx')
| -rw-r--r-- | arch/mips/bcm47xx/nvram.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/mips/bcm47xx/nvram.c b/arch/mips/bcm47xx/nvram.c index ba632ff08a13..dee1c32c0b65 100644 --- a/arch/mips/bcm47xx/nvram.c +++ b/arch/mips/bcm47xx/nvram.c @@ -98,7 +98,7 @@ found: pr_err("The nvram size accoridng to the header seems to be bigger than the partition on flash\n"); if (header->len > NVRAM_SPACE) pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n", - header->len, NVRAM_SPACE); + header->len, NVRAM_SPACE - 1); src = (u32 *)header; dst = (u32 *)nvram_buf; @@ -106,6 +106,7 @@ found: *dst++ = __raw_readl(src++); for (; i < header->len && i < NVRAM_SPACE && i < size; i += 4) *dst++ = readl(src++); + nvram_buf[NVRAM_SPACE - 1] = '\0'; return 0; } @@ -150,10 +151,10 @@ static int nvram_init(void) u8 *dst = (uint8_t *)nvram_buf; size_t len = header.len; - if (header.len > NVRAM_SPACE) { + if (len >= NVRAM_SPACE) { + len = NVRAM_SPACE - 1; pr_err("nvram on flash (%i bytes) is bigger than the reserved space in memory, will just copy the first %i bytes\n", - header.len, NVRAM_SPACE); - len = NVRAM_SPACE; + header.len, len); } err = mtd_read(mtd, 0, len, &bytes_read, dst); |