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-rw-r--r--drivers/misc/xilinx_sdfec.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/misc/xilinx_sdfec.c b/drivers/misc/xilinx_sdfec.c
index 3fc53d20abf3..0bf3bcc8e1ef 100644
--- a/drivers/misc/xilinx_sdfec.c
+++ b/drivers/misc/xilinx_sdfec.c
@@ -611,7 +611,9 @@ static int xsdfec_table_write(struct xsdfec_dev *xsdfec, u32 offset,
* Writes that go beyond the length of
* Shared Scale(SC) table should fail
*/
- if ((XSDFEC_REG_WIDTH_JUMP * (offset + len)) > depth) {
+ if (offset > depth / XSDFEC_REG_WIDTH_JUMP ||
+ len > depth / XSDFEC_REG_WIDTH_JUMP ||
+ offset + len > depth / XSDFEC_REG_WIDTH_JUMP) {
dev_dbg(xsdfec->dev, "Write exceeds SC table length");
return -EINVAL;
}