diff options
Diffstat (limited to 'drivers/vme/vme.c')
| -rw-r--r-- | drivers/vme/vme.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/vme/vme.c b/drivers/vme/vme.c index 6bab2c4ed..56708915e 100644 --- a/drivers/vme/vme.c +++ b/drivers/vme/vme.c @@ -177,8 +177,8 @@ size_t vme_get_size(struct vme_resource *resource) } EXPORT_SYMBOL(vme_get_size); -static int vme_check_window(u32 aspace, unsigned long long vme_base, - unsigned long long size) +int vme_check_window(u32 aspace, unsigned long long vme_base, + unsigned long long size) { int retval = 0; @@ -199,10 +199,8 @@ static int vme_check_window(u32 aspace, unsigned long long vme_base, retval = -EFAULT; break; case VME_A64: - /* - * Any value held in an unsigned long long can be used as the - * base - */ + if ((size != 0) && (vme_base > U64_MAX + 1 - size)) + retval = -EFAULT; break; case VME_CRCSR: if (((vme_base + size) > VME_CRCSR_MAX) || @@ -223,6 +221,7 @@ static int vme_check_window(u32 aspace, unsigned long long vme_base, return retval; } +EXPORT_SYMBOL(vme_check_window); /* * Request a slave image with specific attributes, return some unique |