[PATCH v5 09/15] cmd: List all uclass devices regardless of probe error

[Michal Suchanek <msuchanek@suse.de>]

There are a few commands that iterate uclass with
uclass_first_device/uclass_next_device or the _err variant.

Use the _check class iterator variant to get devices that fail to probe
as well, and print the status.

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
---
 cmd/adc.c       | 22 ++++++++++------------
 cmd/demo.c      | 16 ++++++++++------
 cmd/gpio.c      | 15 +++++++++++----
 cmd/pmic.c      | 15 ++++++++-------
 cmd/regulator.c | 13 +++++++------
 5 files changed, 46 insertions(+), 35 deletions(-)

diff --git a/cmd/adc.c b/cmd/adc.c
index 1c5d3e10a3..7dcb44eb61 100644
--- a/cmd/adc.c
+++ b/cmd/adc.c
@@ -6,29 +6,27 @@
 #include <common.h>
 #include <command.h>
 #include <dm.h>
+#include <errno.h>
 #include <adc.h>
 
 static int do_adc_list(struct cmd_tbl *cmdtp, int flag, int argc,
 		       char *const argv[])
 {
 	struct udevice *dev;
-	int ret;
+	int ret, err;
 
-	ret = uclass_first_device_err(UCLASS_ADC, &dev);
-	if (ret) {
-		printf("No available ADC device\n");
-		return CMD_RET_FAILURE;
-	}
+	ret = err = uclass_first_device_check(UCLASS_ADC, &dev);
 
-	do {
-		printf("- %s\n", dev->name);
+	while (dev) {
+		printf("- %s status: %s\n", dev->name,
+		       ret ? errno_str(ret) : "OK");
 
-		ret = uclass_next_device(&dev);
+		ret = uclass_next_device_check(&dev);
 		if (ret)
-			return CMD_RET_FAILURE;
-	} while (dev);
+			err = ret;
+	}
 
-	return CMD_RET_SUCCESS;
+	return err ? CMD_RET_FAILURE : CMD_RET_SUCCESS;
 }
 
 static int do_adc_info(struct cmd_tbl *cmdtp, int flag, int argc,
diff --git a/cmd/demo.c b/cmd/demo.c
index 571f562ec6..56551f269d 100644
--- a/cmd/demo.c
+++ b/cmd/demo.c
@@ -10,6 +10,7 @@
 #include <command.h>
 #include <dm.h>
 #include <dm-demo.h>
+#include <errno.h>
 #include <mapmem.h>
 #include <asm/io.h>
 
@@ -64,20 +65,23 @@ static int do_demo_light(struct cmd_tbl *cmdtp, int flag, int argc,
 int do_demo_list(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	struct udevice *dev;
-	int i, ret;
+	int i, ret, err = 0;
 
 	puts("Demo uclass entries:\n");
 
-	for (i = 0, ret = uclass_first_device(UCLASS_DEMO, &dev);
+	for (i = 0, ret = uclass_first_device_check(UCLASS_DEMO, &dev);
 	     dev;
-	     ret = uclass_next_device(&dev)) {
-		printf("entry %d - instance %08x, ops %08x, plat %08x\n",
+	     ret = uclass_next_device_check(&dev)) {
+		printf("entry %d - instance %08x, ops %08x, plat %08x, probe %i (%s)\n",
 		       i++, (uint)map_to_sysmem(dev),
 		       (uint)map_to_sysmem(dev->driver->ops),
-		       (uint)map_to_sysmem(dev_get_plat(dev)));
+		       (uint)map_to_sysmem(dev_get_plat(dev)),
+		       ret, errno_str(ret));
+		if (ret)
+			err = ret;
 	}
 
-	return cmd_process_error(cmdtp, ret);
+	return cmd_process_error(cmdtp, err);
 }
 
 static struct cmd_tbl demo_commands[] = {
diff --git a/cmd/gpio.c b/cmd/gpio.c
index 53e9ce666f..4bf410a9e7 100644
--- a/cmd/gpio.c
+++ b/cmd/gpio.c
@@ -77,17 +77,24 @@ static int do_gpio_status(bool all, const char *gpio_name)
 	struct udevice *dev;
 	int banklen;
 	int flags;
-	int ret;
+	int ret, err = 0;
 
 	flags = 0;
 	if (gpio_name && !*gpio_name)
 		gpio_name = NULL;
-	for (ret = uclass_first_device(UCLASS_GPIO, &dev);
+	for (ret = uclass_first_device_check(UCLASS_GPIO, &dev);
 	     dev;
-	     ret = uclass_next_device(&dev)) {
+	     ret = uclass_next_device_check(&dev)) {
 		const char *bank_name;
 		int num_bits;
 
+		if (ret) {
+			printf("GPIO device %s probe error %i (%s)\n",
+			       dev->name, ret, errno_str(ret));
+			err = ret;
+			continue;
+		}
+
 		flags |= FLAG_SHOW_BANK;
 		if (all)
 			flags |= FLAG_SHOW_ALL;
@@ -120,7 +127,7 @@ static int do_gpio_status(bool all, const char *gpio_name)
 			flags |= FLAG_SHOW_NEWLINE;
 	}
 
-	return ret;
+	return err;
 }
 #endif
 
diff --git a/cmd/pmic.c b/cmd/pmic.c
index 0cb44d0740..d5624241e6 100644
--- a/cmd/pmic.c
+++ b/cmd/pmic.c
@@ -51,25 +51,26 @@ static int do_list(struct cmd_tbl *cmdtp, int flag, int argc,
 		   char *const argv[])
 {
 	struct udevice *dev;
-	int ret;
+	int ret, err = 0;
 
 	printf("| %-*.*s| %-*.*s| %s @ %s\n",
 	       LIMIT_DEV, LIMIT_DEV, "Name",
 	       LIMIT_PARENT, LIMIT_PARENT, "Parent name",
 	       "Parent uclass", "seq");
 
-	for (ret = uclass_first_device(UCLASS_PMIC, &dev); dev;
-	     ret = uclass_next_device(&dev)) {
+	for (ret = uclass_first_device_check(UCLASS_PMIC, &dev); dev;
+	     ret = uclass_next_device_check(&dev)) {
 		if (ret)
-			continue;
+			err = ret;
 
-		printf("| %-*.*s| %-*.*s| %s @ %d\n",
+		printf("| %-*.*s| %-*.*s| %s @ %d | probe: %i (%s)\n",
 		       LIMIT_DEV, LIMIT_DEV, dev->name,
 		       LIMIT_PARENT, LIMIT_PARENT, dev->parent->name,
-		       dev_get_uclass_name(dev->parent), dev_seq(dev->parent));
+		       dev_get_uclass_name(dev->parent), dev_seq(dev->parent),
+		       ret, errno_str(ret));
 	}
 
-	if (ret)
+	if (err)
 		return CMD_RET_FAILURE;
 
 	return CMD_RET_SUCCESS;
diff --git a/cmd/regulator.c b/cmd/regulator.c
index 60a70036d6..129c9fec20 100644
--- a/cmd/regulator.c
+++ b/cmd/regulator.c
@@ -205,7 +205,7 @@ static void do_status_detail(struct udevice *dev,
 	constraint(" * mode id:", mode, mode_name);
 }
 
-static void do_status_line(struct udevice *dev)
+static void do_status_line(struct udevice *dev, int status)
 {
 	struct dm_regulator_uclass_plat *pdata;
 	int current, value, mode;
@@ -231,6 +231,7 @@ static void do_status_line(struct udevice *dev)
 		printf("%-10s", mode_name);
 	else
 		printf("%-10s", "-");
+	printf(" %s", status ? errno_str(status) : "OK");
 	printf("\n");
 }
 
@@ -250,11 +251,11 @@ static int do_status(struct cmd_tbl *cmdtp, int flag, int argc,
 	}
 
 	/* Show all of them in a list, probing them as needed */
-	printf("%-20s %-10s %10s %10s %-10s\n", "Name", "Enabled", "uV", "mA",
-	       "Mode");
-	for (ret = uclass_first_device(UCLASS_REGULATOR, &dev); dev;
-	     ret = uclass_next_device(&dev))
-		do_status_line(dev);
+	printf("%-20s %-10s %10s %10s %-10s %s\n", "Name", "Enabled", "uV", "mA",
+	       "Mode", "Status");
+	for (ret = uclass_first_device_check(UCLASS_REGULATOR, &dev); dev;
+	     ret = uclass_next_device_check(&dev))
+		do_status_line(dev, ret);
 
 	return CMD_RET_SUCCESS;
 }
-- 
2.37.3