fmuk66-v3:Fix hang on SDIO card removal/reinsertion

   The interrupt driven card detect logic was enabled
   but the auto mounter was not. That interrupt was
   calling mmcsd_mediachange.

   There is a reentrancy issues in the kinetis callback logic.
   Toplevel calls mmcsd_mediachange calls SDIO_CALLBACKENABLE
   that calls kinetis_callbackenable that calls kinetis_callback
   that calls mmcsd_mediachange.

boards/nxp/fmuk66-v3/nuttx-config/Kconfig

@@ -3,7 +3,6 @@
 # see misc/tools/kconfig-language.txt.
 #
 
-if ARCH_BOARD_NXP_FMUK66_V3
 config FMUK66_SDHC_AUTOMOUNT
 	bool "SDHC automounter"
 	default n
@@ -21,7 +20,7 @@ config FMUK66_SDHC_AUTOMOUNT_BLKDEV
 
 config FMUK66_SDHC_AUTOMOUNT_MOUNTPOINT
 	string "SDHC mount point"
-	default "/mnt/sdcard"
+	default "/fs/microsd"
 
 config FMUK66_SDHC_AUTOMOUNT_DDELAY
 	int "SDHC debounce delay (milliseconds)"
@@ -46,5 +45,3 @@ config BOARD_USE_PROBES
 
 	---help---
 		Select to use GPIO FMU-CH1-6 to provide timing signals from selected drivers.
-
-endif

boards/nxp/fmuk66-v3/nuttx-config/nsh/defconfig

@@ -1,3 +1,10 @@
+#
+# This file is autogenerated: PLEASE DO NOT EDIT IT.
+#
+# You can use "make menuconfig" to make any modifications to the installed .config file.
+# You can then do "make savedefconfig" to generate a new defconfig file that includes your
+# modifications.
+#
 # CONFIG_DISABLE_OS_API is not set
 # CONFIG_MMCSD_HAVE_WRITEPROTECT is not set
 # CONFIG_MMCSD_SPI is not set
@@ -170,7 +177,6 @@ CONFIG_SDCLONE_DISABLE=y
 CONFIG_SEM_NNESTPRIO=8
 CONFIG_SEM_PREALLOCHOLDERS=0
 CONFIG_SERIAL_IFLOWCONTROL_WATERMARKS=y
-CONFIG_SERIAL_TERMIOS=y
 CONFIG_SIG_DEFAULT=y
 CONFIG_SIG_SIGALRM_ACTION=y
 CONFIG_SIG_SIGUSR1_ACTION=y

boards/nxp/fmuk66-v3/src/board_config.h

@@ -187,7 +187,7 @@ __BEGIN_DECLS
  */
 #define SD_CAED_P_EN       (GPIO_LOWDRIVE | GPIO_OUTPUT_ONE  | PIN_PORTD | PIN6)
 
-#define GPIO_SD_CARDDETECT (GPIO_PULLUP | PIN_INT_BOTH | PIN_PORTD | PIN10)
+//#define GPIO_SD_CARDDETECT (GPIO_PULLUP | PIN_INT_BOTH | PIN_PORTD | PIN10)
 
 /* SPI
  *

boards/nxp/fmuk66-v3/src/sdhc.c

@@ -99,6 +99,7 @@ static struct fmuk66_sdhc_state_s g_sdhc;
  * Private Functions
  ****************************************************************************/
 
+#if defined(GPIO_SD_CARDDETECT)
 /****************************************************************************
  * Name: fmuk66_mediachange
  ****************************************************************************/
@@ -143,6 +144,7 @@ static int fmuk66_cdinterrupt(int irq, FAR void *context, FAR void *args)
 	fmuk66_mediachange((struct fmuk66_sdhc_state_s *) args);
 	return OK;
 }
+#endif
 
 /****************************************************************************
  * Public Functions
@@ -164,12 +166,13 @@ int fmuk66_sdhc_initialize(void)
 
 	VDD_3V3_SD_CARD_EN(true);
 
+#if defined(GPIO_SD_CARDDETECT)
 	kinetis_pinconfig(GPIO_SD_CARDDETECT);
 
 	/* Attached the card detect interrupt (but don't enable it yet) */
 
 	kinetis_pinirqattach(GPIO_SD_CARDDETECT, fmuk66_cdinterrupt, sdhc);
-
+#endif
 	/* Configure the write protect GPIO -- None */
 
 	/* Mount the SDHC-based MMC/SD block driver */
@@ -210,13 +213,17 @@ int fmuk66_sdhc_initialize(void)
 
 	syslog(LOG_ERR, "Successfully bound SDHC to the MMC/SD driver\n");
 
+#if defined(GPIO_SD_CARDDETECT)
 	/* Handle the initial card state */
 
 	fmuk66_mediachange(sdhc);
 
 	/* Enable CD interrupts to handle subsequent media changes */
 
 	kinetis_pinirqenable(GPIO_SD_CARDDETECT);
+#else
+	sdhc_mediachange(sdhc->sdhc, true);
+#endif
 	return OK;
 }