[PATCH 2/5] rtc: test: allow registering many devices

[Alexandre Belloni]

Use a loop to register RTC devices

Signed-off-by: Alexandre Belloni <alexandre.bell...@bootlin.com>
---
 drivers/rtc/rtc-test.c | 48 +++++++++++++++++++++---------------------
 1 file changed, 24 insertions(+), 24 deletions(-)

diff --git a/drivers/rtc/rtc-test.c b/drivers/rtc/rtc-test.c
index f0eb8e0c5055..796c45dee661 100644
--- a/drivers/rtc/rtc-test.c
+++ b/drivers/rtc/rtc-test.c
@@ -13,7 +13,9 @@
 #include <linux/rtc.h>
 #include <linux/platform_device.h>
 
-static struct platform_device *test0 = NULL, *test1 = NULL;
+#define MAX_RTC_TEST 3
+
+struct platform_device *pdev[MAX_RTC_TEST];
 
 static int test_rtc_read_alarm(struct device *dev,
        struct rtc_wkalrm *alrm)
@@ -122,47 +124,45 @@ static struct platform_driver test_driver = {
 
 static int __init test_init(void)
 {
-       int err;
+       int i, err;
 
        if ((err = platform_driver_register(&test_driver)))
                return err;
 
-       if ((test0 = platform_device_alloc("rtc-test", 0)) == NULL) {
-               err = -ENOMEM;
-               goto exit_driver_unregister;
+       err = -ENOMEM;
+       for (i = 0; i < MAX_RTC_TEST; i++) {
+               pdev[i] = platform_device_alloc("rtc-test", i);
+               if (!pdev[i])
+                       goto exit_free_mem;
        }
 
-       if ((test1 = platform_device_alloc("rtc-test", 1)) == NULL) {
-               err = -ENOMEM;
-               goto exit_put_test0;
+       for (i = 0; i < MAX_RTC_TEST; i++) {
+               err = platform_device_add(pdev[i]);
+               if (err)
+                       goto exit_device_del;
        }
 
-       if ((err = platform_device_add(test0)))
-               goto exit_put_test1;
-
-       if ((err = platform_device_add(test1)))
-               goto exit_del_test0;
-
        return 0;
 
-exit_del_test0:
-       platform_device_del(test0);
+exit_device_del:
+       for (; i > 0; i--)
+               platform_device_del(pdev[i - 1]);
 
-exit_put_test1:
-       platform_device_put(test1);
+exit_free_mem:
+       for (i = 0; i < MAX_RTC_TEST; i++)
+               platform_device_put(pdev[i]);
 
-exit_put_test0:
-       platform_device_put(test0);
-
-exit_driver_unregister:
        platform_driver_unregister(&test_driver);
        return err;
 }
 
 static void __exit test_exit(void)
 {
-       platform_device_unregister(test0);
-       platform_device_unregister(test1);
+       int i;
+
+       for (i = 0; i < MAX_RTC_TEST; i++)
+               platform_device_unregister(pdev[i]);
+
        platform_driver_unregister(&test_driver);
 }
 
-- 
2.17.0