HID: i2c-hid: acpi: Move GUID out of function and described it

Move static GUID variable out of the function and add a comment
how it looks like in the human readable representation.

While at it, include uuid.h since the guid_t type is defined in it.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
 drivers/hid/i2c-hid/i2c-hid-acpi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/i2c-hid/i2c-hid-acpi.c b/drivers/hid/i2c-hid/i2c-hid-acpi.c
index bb8c00e6be78..00bbd218f1e8 100644
--- a/drivers/hid/i2c-hid/i2c-hid-acpi.c
+++ b/drivers/hid/i2c-hid/i2c-hid-acpi.c

@@ -25,6 +25,7 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/pm.h>
+#include <linux/uuid.h>
 
 #include "i2c-hid.h"
 

@@ -42,11 +43,13 @@ static const struct acpi_device_id i2c_hid_acpi_blacklist[] = {
 	{ },
 };
 
+/* HID I²C Device: 3cdff6f7-4267-4555-ad05-b30a3d8938de */
+static guid_t i2c_hid_guid =
+	GUID_INIT(0x3CDFF6F7, 0x4267, 0x4555,
+		  0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE);
+
 static int i2c_hid_acpi_get_descriptor(struct i2c_client *client)
 {
-	static guid_t i2c_hid_guid =
-		GUID_INIT(0x3CDFF6F7, 0x4267, 0x4555,
-			  0xAD, 0x05, 0xB3, 0x0A, 0x3D, 0x89, 0x38, 0xDE);
 	union acpi_object *obj;
 	struct acpi_device *adev;
 	acpi_handle handle;

-- 
2.30.0

On Fri, Feb 26, 2021 at 8:32 PM Andy Shevchenko
[off-list ref] wrote:

Move static GUID variable out of the function and add a comment
how it looks like in the human readable representation.

While at it, include uuid.h since the guid_t type is defined in it.

Oh, I see more improvements can be done, so, I will send this and the
rest as v2 altogether.

-- 
With Best Regards,
Andy Shevchenko