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UBI: check max_beb_per1024 value in ubi_attach_mtd_dev

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max_beb_per1024 shouldn't be negative, and a 0 value will be treated as
the default value. For the upper bound, 768/1024 should be enough.

Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
This commit is contained in:
Richard Genoud 2012-08-20 18:00:13 +02:00 committed by Artem Bityutskiy
parent 256334c319
commit d2f588f934
1 changed files with 9 additions and 0 deletions
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9
drivers/mtd/ubi/build.c
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@ -49,6 +49,9 @@
/* Maximum number of comma-separated items in the 'mtd=' parameter */ /* Maximum number of comma-separated items in the 'mtd=' parameter */
#define MTD_PARAM_MAX_COUNT 2 #define MTD_PARAM_MAX_COUNT 2
/* Maximum value for the number of bad PEBs per 1024 PEBs */
#define MAX_MTD_UBI_BEB_LIMIT 768
#ifdef CONFIG_MTD_UBI_MODULE #ifdef CONFIG_MTD_UBI_MODULE
#define ubi_is_module() 1 #define ubi_is_module() 1
#else #else
@ -852,6 +855,12 @@ int ubi_attach_mtd_dev(struct mtd_info *mtd, int ubi_num,
struct ubi_device *ubi; struct ubi_device *ubi;
int i, err, ref = 0; int i, err, ref = 0;
if (max_beb_per1024 < 0 || max_beb_per1024 > MAX_MTD_UBI_BEB_LIMIT)
return -EINVAL;
if (!max_beb_per1024)
max_beb_per1024 = CONFIG_MTD_UBI_BEB_LIMIT;
/* /*
* Check if we already have the same MTD device attached. * Check if we already have the same MTD device attached.
* *