ZC v1716 : Bug fix in DVserverKMD wrt mutex

malayaku · sraman4 · commit 44bd4c19eb7f · 2024-11-19T13:33:51.000+05:30
Signed-off-by: Malaya Kumar Parida &lt;malaya.kumar.parida@intel.com&gt;
diff --git a/DVServerKMD/viogpulite.cpp b/DVServerKMD/viogpulite.cpp
@@ -662,13 +662,15 @@ VOID VioGpuAdapterLite::BlackOutScreen(CURRENT_MODE* pCurrentMod)
 		}
 
 		//FIXME!!! rotation
+		KeWaitForMutexObject(&m_screen_mutex, Executive, KernelMode, FALSE, NULL);
 
 		resid = m_screen[pCurrentMod->DispInfo.TargetId].m_pFrameBuf->GetId();
 
 		m_CtrlQueue.TransferToHost2D(resid, 0UL, pCurrentMod->DispInfo.Width, pCurrentMod->DispInfo.Height, 0, 0, NULL);
 		m_screen[pCurrentMod->DispInfo.TargetId].m_FlushCount++;
 		m_CtrlQueue.ResFlush(resid, pCurrentMod->DispInfo.Width, pCurrentMod->DispInfo.Height, 0, 0, pCurrentMod->DispInfo.TargetId,
 			&m_screen[pCurrentMod->DispInfo.TargetId].m_FlushEvent);
+		KeReleaseMutex(&m_screen_mutex, FALSE);
 	}
 }
 

Original file line number	Diff line number	Diff line change
`@@ -662,13 +662,15 @@ VOID VioGpuAdapterLite::BlackOutScreen(CURRENT_MODE* pCurrentMod)`
`662`	`662`	`}`
`663`	`663`
`664`	`664`	`//FIXME!!! rotation`
	`665`	`+ KeWaitForMutexObject(&m_screen_mutex, Executive, KernelMode, FALSE, NULL);`
`665`	`666`
`666`	`667`	`resid = m_screen[pCurrentMod->DispInfo.TargetId].m_pFrameBuf->GetId();`
`667`	`668`
`668`	`669`	`m_CtrlQueue.TransferToHost2D(resid, 0UL, pCurrentMod->DispInfo.Width, pCurrentMod->DispInfo.Height, 0, 0, NULL);`
`669`	`670`	`m_screen[pCurrentMod->DispInfo.TargetId].m_FlushCount++;`
`670`	`671`	`m_CtrlQueue.ResFlush(resid, pCurrentMod->DispInfo.Width, pCurrentMod->DispInfo.Height, 0, 0, pCurrentMod->DispInfo.TargetId,`
`671`	`672`	`&m_screen[pCurrentMod->DispInfo.TargetId].m_FlushEvent);`
	`673`	`+ KeReleaseMutex(&m_screen_mutex, FALSE);`
`672`	`674`	`}`
`673`	`675`	`}`
`674`	`676`