File u_input_remove_invalid_checks.patch of Package xorg-x11-server.1462

commit 5c149ffabb8cec01208ca99614c100d965c3d7c2
Author: Michal Srb <msrb@suse.com>
Subject: input: Remove invalid bug checks.
Patch-Mainline: To be upstreamed
References: bnc#680923

Commit 2f1aedcaed8fd99b823d451bf1fb02330c078f67 added several bug checks. Some
of them are not correct.

Checks in Init(Ptr|String|Bell|Led|Integer)FeedbackClassDeviceStruct verify
that no feedback struct was set yet, but that is not required. If any feedback
structs are already present, the function will chain them behind the new one.

diff --git a/dix/devices.c b/dix/devices.c
index ab923d5..73f60f4 100644
--- a/dix/devices.c
+++ b/dix/devices.c
@@ -1475,7 +1475,6 @@ InitPtrFeedbackClassDeviceStruct(DeviceIntPtr dev, PtrCtrlProcPtr controlProc)
     PtrFeedbackPtr feedc;
 
     BUG_RETURN_VAL(dev == NULL, FALSE);
-    BUG_RETURN_VAL(dev->ptrfeed != NULL, FALSE);
 
     feedc = malloc(sizeof(PtrFeedbackClassRec));
     if (!feedc)
@@ -1519,7 +1518,6 @@ InitStringFeedbackClassDeviceStruct(DeviceIntPtr dev,
     StringFeedbackPtr feedc;
 
     BUG_RETURN_VAL(dev == NULL, FALSE);
-    BUG_RETURN_VAL(dev->stringfeed != NULL, FALSE);
 
     feedc = malloc(sizeof(StringFeedbackClassRec));
     if (!feedc)
@@ -1556,7 +1554,6 @@ InitBellFeedbackClassDeviceStruct(DeviceIntPtr dev, BellProcPtr bellProc,
     BellFeedbackPtr feedc;
 
     BUG_RETURN_VAL(dev == NULL, FALSE);
-    BUG_RETURN_VAL(dev->bell != NULL, FALSE);
 
     feedc = malloc(sizeof(BellFeedbackClassRec));
     if (!feedc)
@@ -1578,7 +1575,6 @@ InitLedFeedbackClassDeviceStruct(DeviceIntPtr dev, LedCtrlProcPtr controlProc)
     LedFeedbackPtr feedc;
 
     BUG_RETURN_VAL(dev == NULL, FALSE);
-    BUG_RETURN_VAL(dev->leds != NULL, FALSE);
 
     feedc = malloc(sizeof(LedFeedbackClassRec));
     if (!feedc)
@@ -1601,7 +1597,6 @@ InitIntegerFeedbackClassDeviceStruct(DeviceIntPtr dev,
     IntegerFeedbackPtr feedc;
 
     BUG_RETURN_VAL(dev == NULL, FALSE);
-    BUG_RETURN_VAL(dev->intfeed != NULL, FALSE);
 
     feedc = malloc(sizeof(IntegerFeedbackClassRec));
     if (!feedc)