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Upgrade to 4.4.50-rt62
[kvmfornfv.git] / kernel / drivers / hid / hid-cypress.c
diff --git a/kernel/drivers/hid/hid-cypress.c b/kernel/drivers/hid/hid-cypress.c
index 1b764d1..1689568 100644 (file)
--- a/kernel/drivers/hid/hid-cypress.c
+++ b/kernel/drivers/hid/hid-cypress.c
@@ -39,6 +39,9 @@ static __u8 *cp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
        if (!(quirks & CP_RDESC_SWAPPED_MIN_MAX))
                return rdesc;
 
+       if (*rsize < 4)
+               return rdesc;
+
        for (i = 0; i < *rsize - 4; i++)
                if (rdesc[i] == 0x29 && rdesc[i + 2] == 0x19) {
                        rdesc[i] = 0x19;