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path: root/drivers/sbus/char/oradax.c
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Diffstat (limited to 'drivers/sbus/char/oradax.c')
-rw-r--r--drivers/sbus/char/oradax.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/sbus/char/oradax.c b/drivers/sbus/char/oradax.c
index 03dc04739225..c44d7c7ffc92 100644
--- a/drivers/sbus/char/oradax.c
+++ b/drivers/sbus/char/oradax.c
@@ -880,7 +880,7 @@ static int dax_ccb_exec(struct dax_ctx *ctx, const char __user *buf,
dax_dbg("args: ccb_buf_len=%ld, idx=%d", count, idx);
/* for given index and length, verify ca_buf range exists */
- if (idx + nccbs >= DAX_CA_ELEMS) {
+ if (idx < 0 || idx > (DAX_CA_ELEMS - nccbs)) {
ctx->result.exec.status = DAX_SUBMIT_ERR_NO_CA_AVAIL;
return 0;
}