From: Jason Gerecke <killertofu@gmail.com>
Date: Thu, 11 Feb 2021 19:30:59 +0000 (-0800)
Subject: HID: hiddev: Return specific error codes on connect failure
X-Git-Tag: accepted/tizen/unified/20230118.172025~7327^2~11^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9951bb259dd0794db39beb63899104da9579efcc;p=platform%2Fkernel%2Flinux-rpi.git

HID: hiddev: Return specific error codes on connect failure

The only caller of this function only cares about gross success/failure
but we still might as well resolve the following smatch warning and fix
the other error paths as well:

    hiddev.c:894 hiddev_connect() warn: returning -1 instead of -ENOMEM is sloppy

Signed-off-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---

diff --git a/drivers/hid/usbhid/hiddev.c b/drivers/hid/usbhid/hiddev.c
index 45e0b1c..2fb2991 100644
--- a/drivers/hid/usbhid/hiddev.c
+++ b/drivers/hid/usbhid/hiddev.c
@@ -887,11 +887,11 @@ int hiddev_connect(struct hid_device *hid, unsigned int force)
 				break;
 
 		if (i == hid->maxcollection)
-			return -1;
+			return -EINVAL;
 	}
 
 	if (!(hiddev = kzalloc(sizeof(struct hiddev), GFP_KERNEL)))
-		return -1;
+		return -ENOMEM;
 
 	init_waitqueue_head(&hiddev->wait);
 	INIT_LIST_HEAD(&hiddev->list);
@@ -905,7 +905,7 @@ int hiddev_connect(struct hid_device *hid, unsigned int force)
 		hid_err(hid, "Not able to get a minor for this device\n");
 		hid->hiddev = NULL;
 		kfree(hiddev);
-		return -1;
+		return retval;
 	}
 
 	/*