Refactor the OF/DT ima_get_kexec_buffer() to use a generic helper to
validate the address range. No functional change intended.
Cc: stable@vger.kernel.org
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
---
drivers/of/kexec.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/of/kexec.c b/drivers/of/kexec.c
index 1ee2d31816ae..c4cf3552c018 100644
--- a/drivers/of/kexec.c
+++ b/drivers/of/kexec.c
@@ -128,7 +128,6 @@ int __init ima_get_kexec_buffer(void **addr, size_t *size)
{
int ret, len;
unsigned long tmp_addr;
- unsigned long start_pfn, end_pfn;
size_t tmp_size;
const void *prop;
@@ -144,17 +143,9 @@ int __init ima_get_kexec_buffer(void **addr, size_t *size)
if (!tmp_size)
return -ENOENT;
- /*
- * Calculate the PFNs for the buffer and ensure
- * they are with in addressable memory.
- */
- start_pfn = PHYS_PFN(tmp_addr);
- end_pfn = PHYS_PFN(tmp_addr + tmp_size - 1);
- if (!page_is_ram(start_pfn) || !page_is_ram(end_pfn)) {
- pr_warn("IMA buffer at 0x%lx, size = 0x%zx beyond memory\n",
- tmp_addr, tmp_size);
- return -EINVAL;
- }
+ ret = ima_validate_range(tmp_addr, tmp_size);
+ if (ret)
+ return ret;
*addr = __va(tmp_addr);
*size = tmp_size;
--
2.50.1