Convert CONFIG_SYS_STDIO_DEREGISTER to Kconfig

This converts the following to Kconfig:
   CONFIG_SYS_STDIO_DEREGISTER

This option should never be enabled in SPL, so use
CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) when checking the option.

Signed-off-by: Simon Glass <sjg@chromium.org>
[trini: Re-sync]
Signed-off-by: Tom Rini <trini@konsulko.com>

common/Kconfig

@@ -335,6 +335,15 @@ config SYS_CONSOLE_INFO_QUIET
 	  Enable this option to supress this output. It can be obtained by
 	  calling stdio_print_current_devices() from board code.
 
+config SYS_STDIO_DEREGISTER
+	bool "Allow deregistering stdio devices"
+	default y if USB_KEYBOARD
+	help
+	  Generally there is no need to deregister stdio devices since they
+	  are never deactivated. But if a stdio device is used which can be
+	  removed (for example a USB keyboard) then this option can be
+	  enabled to ensure this is handled correctly.
+
 endmenu
 
 config SYS_NO_FLASH

common/stdio.c

@@ -37,7 +37,7 @@ char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
 #define	CONFIG_SYS_DEVICE_NULLDEV	1
 #endif
 
-#ifdef	CONFIG_SYS_STDIO_DEREGISTER
+#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
 #define	CONFIG_SYS_DEVICE_NULLDEV	1
 #endif
 
@@ -245,7 +245,7 @@ int stdio_register(struct stdio_dev *dev)
 /* deregister the device "devname".
  * returns 0 if success, -1 if device is assigned and 1 if devname not found
  */
-#ifdef	CONFIG_SYS_STDIO_DEREGISTER
+#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
 int stdio_deregister_dev(struct stdio_dev *dev, int force)
 {
 	int l;
@@ -292,7 +292,7 @@ int stdio_deregister(const char *devname, int force)
 
 	return stdio_deregister_dev(dev, force);
 }
-#endif	/* CONFIG_SYS_STDIO_DEREGISTER */
+#endif /* CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER) */
 
 int stdio_init_tables(void)
 {

common/usb_kbd.c

@@ -570,7 +570,7 @@ int drv_usb_kbd_init(void)
 /* Deregister the keyboard. */
 int usb_kbd_deregister(int force)
 {
-#ifdef CONFIG_SYS_STDIO_DEREGISTER
+#if CONFIG_IS_ENABLED(SYS_STDIO_DEREGISTER)
 	struct stdio_dev *dev;
 	struct usb_device *usb_kbd_dev;
 	struct usb_kbd_pdata *data;

configs/MPC8610HPCD_defconfig

@@ -6,6 +6,7 @@ CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_BOOTDELAY=10
 # CONFIG_CONSOLE_MUX is not set
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y

configs/MPC8641HPCN_36BIT_defconfig

@@ -7,6 +7,7 @@ CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_BOOTDELAY=10
 # CONFIG_CONSOLE_MUX is not set
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y

configs/MPC8641HPCN_defconfig

@@ -6,6 +6,7 @@ CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_BOOTDELAY=10
 # CONFIG_CONSOLE_MUX is not set
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_USB=y

configs/apalis_t30_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_APALIS_T30=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra30-apalis"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Apalis T30 # "
 CONFIG_CMD_BOOTZ=y

configs/at91rm9200ek_defconfig

@@ -2,6 +2,7 @@ CONFIG_ARM=y
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91RM9200EK=y
 CONFIG_BOOTDELAY=3
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y

configs/at91rm9200ek_ram_defconfig

@@ -3,6 +3,7 @@ CONFIG_ARCH_AT91=y
 CONFIG_TARGET_AT91RM9200EK=y
 CONFIG_SYS_EXTRA_OPTIONS="RAMBOOT"
 CONFIG_BOOTDELAY=3
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_HUSH_PARSER=y

configs/beaver_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_BEAVER=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra30-beaver"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Tegra30 (Beaver) # "
 CONFIG_CMD_BOOTZ=y

configs/cardhu_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_CARDHU=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra30-cardhu"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Tegra30 (Cardhu) # "
 CONFIG_CMD_BOOTZ=y

configs/cei-tk1-som_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_CEI_TK1_SOM=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra124-cei-tk1-som"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Tegra124 (TK1-SOM) # "
 CONFIG_CMD_BOOTZ=y

configs/cgtqmx6eval_defconfig

@@ -18,6 +18,7 @@ CONFIG_BOOTDELAY=3
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 CONFIG_SPL=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="CGT-QMX6-Quad U-Boot > "

configs/colibri_t20_defconfig

@@ -4,6 +4,7 @@ CONFIG_TEGRA20=y
 CONFIG_TARGET_COLIBRI_T20=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra20-colibri"
 CONFIG_OF_SYSTEM_SETUP=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Colibri T20 # "
 CONFIG_CMD_BOOTZ=y

configs/colibri_t30_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_COLIBRI_T30=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra30-colibri"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Colibri T30 # "
 CONFIG_CMD_BOOTZ=y

configs/dalmore_defconfig

@@ -5,6 +5,7 @@ CONFIG_TARGET_DALMORE=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra114-dalmore"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Tegra114 (Dalmore) # "
 CONFIG_CMD_BOOTZ=y

configs/dms-ba16-1g_defconfig

@@ -7,6 +7,7 @@ CONFIG_BOOTDELAY=1
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set

configs/dms-ba16_defconfig

@@ -6,6 +6,7 @@ CONFIG_BOOTDELAY=1
 # CONFIG_CONSOLE_MUX is not set
 CONFIG_SYS_CONSOLE_IS_IN_ENV=y
 CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE=y
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 # CONFIG_CMD_IMLS is not set

configs/e2220-1170_defconfig

@@ -4,6 +4,7 @@ CONFIG_TEGRA210=y
 CONFIG_DEFAULT_DEVICE_TREE="tegra210-e2220-1170"
 CONFIG_OF_SYSTEM_SETUP=y
 CONFIG_CONSOLE_MUX=y
+CONFIG_SYS_STDIO_DEREGISTER=y
 CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Tegra210 (E2220-1170) # "
 # CONFIG_CMD_IMI is not set

configs/gwventana_defconfig

@@ -17,6 +17,7 @@ CONFIG_FIT_VERBOSE=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=arch/arm/imx-common/spl_sd.cfg,MX6QDL"
 CONFIG_BOOTDELAY=3
+# CONFIG_SYS_STDIO_DEREGISTER is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
 CONFIG_SPL=y
 CONFIG_SPL_STACK_R=y