[LTP] [PATCH] device-drivers/acpi/ltp_acpi_cmds: Fix build errors

[Tiezhu Yang]

There exist the following errors when building LTP:

  ltp_acpi_cmds.c:39:10: fatal error: linux/genhd.h: No such file or directory
  ltp_acpi_cmds.c:131:18: error: implicit declaration of function 'acpi_bus_get_device'
  ltp_acpi_cmds.c:400:18: error: implicit declaration of function 'acpi_bus_get_device'

For the first error:

This is because genhd.h has been removed in the Linux kernel, the contents
of genhd.h was folded into blkdev.h [1]. Since blkdev.h has been included
in the C file, just remove unused include genhd.h to fix the build error.

For the second and third errors:

This is because acpi_bus_get_device() has been droped in the Linux kernel,
in order to fix the build errors, just replace acpi_bus_get_device() with
acpi_fetch_acpi_dev() like the kernel commit [2].

[1] https://git.kernel.org/torvalds/c/322cbb50de71
[2] https://git.kernel.org/torvalds/c/ac2a3feefad5

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
 testcases/kernel/device-drivers/acpi/ltp_acpi_cmds.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/testcases/kernel/device-drivers/acpi/ltp_acpi_cmds.c b/testcases/kernel/device-drivers/acpi/ltp_acpi_cmds.c
index d12dd6b94..b2d46e1a8 100644
--- a/testcases/kernel/device-drivers/acpi/ltp_acpi_cmds.c
+++ b/testcases/kernel/device-drivers/acpi/ltp_acpi_cmds.c
@@ -36,7 +36,6 @@
 #include <linux/ioctl.h>
 #include <linux/pm.h>
 #include <linux/acpi.h>
-#include <linux/genhd.h>
 #include <linux/dmi.h>
 #include <linux/nls.h>
 
@@ -123,14 +122,13 @@ static void get_crs_object(acpi_handle handle)
 
 static void get_sysfs_path(acpi_handle handle)
 {
-	acpi_status status;
 	struct acpi_device *device;
 
 	kfree(sysfs_path);
 	sysfs_path = NULL;
 
-	status = acpi_bus_get_device(handle, &device);
-	if (ACPI_SUCCESS(status))
+	device = acpi_fetch_acpi_dev(handle);
+	if (device)
 		sysfs_path = kobject_get_path(&device->dev.kobj, GFP_KERNEL);
 }
 
@@ -398,9 +396,9 @@ static int acpi_test_bus(void)
 	if (acpi_failure(status, "acpi_get_handle"))
 		return 1;
 
-	prk_alert("TEST -- acpi_bus_get_device");
-	status = acpi_bus_get_device(bus_handle, &device);
-	if (acpi_failure(status, "acpi_bus_get_device"))
+	prk_alert("TEST -- acpi_fetch_acpi_dev");
+	device = acpi_fetch_acpi_dev(bus_handle);
+	if (!device)
 		return 1;
 
 	prk_alert("TEST -- acpi_bus_update_power ");
-- 
2.42.0