Keep refusing SDIO initialization. The driver cannot work properly

with SDIO because it does not handle card interrupts.

diff --git a/sys/arch/octeon/dev/octmmc.c b/sys/arch/octeon/dev/octmmc.c
index 56cac9d..bbcaf81 100644 (file)
--- 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