--- zzzz-none-000/linux-3.10.107/drivers/char/dsp56k.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/char/dsp56k.c	2021-02-04 17:41:59.000000000 +0000
@@ -383,7 +383,7 @@
 			return put_user(status, &hf->status);
 		}
 		case DSP56K_HOST_CMD:
-			if (arg > 31 || arg < 0)
+			if (arg > 31)
 				return -EINVAL;
 			mutex_lock(&dsp56k_mutex);
 			dsp56k_host_interface.cvr = (u_char)((arg & DSP56K_CVR_HV_MASK) |