From 7aa7a19ae6b74e9a989aa6ac97d29c4973806c23 Mon Sep 17 00:00:00 2001
From: visa <visa@openbsd.org>
Date: Mon, 10 Jul 2017 16:17:51 +0000
Subject: [PATCH] Keep refusing SDIO initialization. The driver cannot work
 properly with SDIO because it does not handle card interrupts.

---
 sys/arch/octeon/dev/octmmc.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/sys/arch/octeon/dev/octmmc.c b/sys/arch/octeon/dev/octmmc.c
index 56cac9d9be7..bbcaf818ef7 100644
--- a/sys/arch/octeon/dev/octmmc.c
+++ b/sys/arch/octeon/dev/octmmc.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: octmmc.c,v 1.3 2017/07/07 14:49:04 visa Exp $	*/
+/*	$OpenBSD: octmmc.c,v 1.4 2017/07/10 16:17:51 visa Exp $	*/
 
 /*
  * Copyright (c) 2016, 2017 Visa Hankala
@@ -494,6 +494,15 @@ octmmc_exec_command(sdmmc_chipset_handle_t sch, struct sdmmc_command *cmd)
 {
 	struct octmmc_bus *bus = sch;
 
+	/*
+	 * Refuse SDIO probe. Proper SDIO operation is not possible
+	 * because of a lack of card interrupt handling.
+	 */
+	if (cmd->c_opcode == SD_IO_SEND_OP_COND) {
+		cmd->c_error = ENOTSUP;
+		return;
+	}
+
 	/*
 	 * The DMA mode can only do data block transfers. Other commands have
 	 * to use the PIO mode. Single-block transfers can use PIO because
-- 
2.20.1