xnu-6153.141.1.tar.gz

[apple/xnu.git] / iokit / Kernel / IODMAEventSource.cpp

diff --git a/iokit/Kernel/IODMAEventSource.cpp b/iokit/Kernel/IODMAEventSource.cpp
index af624aeaa2dc8b51d4b57ff8ab6392ce93dff90e..dd4d186f0917827538b87f1ee39dc79b84fd8a90 100644 (file)
--- a/iokit/Kernel/IODMAEventSource.cpp
+++ b/iokit/Kernel/IODMAEventSource.cpp
@@ -48,7 +48,7 @@ IODMAEventSource::init(OSObject *inOwner,
                return false;
        }
 
-       if (inProvider == 0) {
+       if (inProvider == NULL) {
                return false;
        }
 
@@ -58,7 +58,7 @@ IODMAEventSource::init(OSObject *inOwner,
        dmaNotificationAction = inNotification;
 
        dmaController = IODMAController::getController(dmaProvider, inDMAIndex);
-       if (dmaController == 0) {
+       if (dmaController == NULL) {
                return false;
        }
        dmaController->retain();
@@ -94,7 +94,7 @@ IODMAEventSource::dmaEventSource(OSObject *inOwner,
 
        if (dmaES && !dmaES->init(inOwner, inProvider, inCompletion, inNotification, inDMAIndex)) {
                dmaES->release();
-               return 0;
+               return NULL;
        }
 
        return dmaES;
@@ -105,7 +105,7 @@ IODMAEventSource::startDMACommand(IODMACommand *dmaCommand, IODirection directio
 {
        IOReturn result;
 
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -113,7 +113,7 @@ IODMAEventSource::startDMACommand(IODMACommand *dmaCommand, IODirection directio
                return kIOReturnBusy;
        }
 
-       if (dmaCompletionAction == 0) {
+       if (dmaCompletionAction == NULL) {
                dmaSynchBusy = true;
        }
 
@@ -134,7 +134,7 @@ IODMAEventSource::startDMACommand(IODMACommand *dmaCommand, IODirection directio
 IOReturn
 IODMAEventSource::stopDMACommand(bool flush, uint64_t timeout)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -145,7 +145,7 @@ IODMAEventSource::stopDMACommand(bool flush, uint64_t timeout)
 IOReturn
 IODMAEventSource::queryDMACommand(IODMACommand **dmaCommand, IOByteCount *transferCount, bool waitForIdle)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -156,7 +156,7 @@ IODMAEventSource::queryDMACommand(IODMACommand **dmaCommand, IOByteCount *transf
 IOByteCount
 IODMAEventSource::getFIFODepth(IODirection direction)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return 0;
        }
 
@@ -167,7 +167,7 @@ IODMAEventSource::getFIFODepth(IODirection direction)
 IOReturn
 IODMAEventSource::setFIFODepth(IOByteCount depth)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -178,7 +178,7 @@ IODMAEventSource::setFIFODepth(IOByteCount depth)
 IOByteCount
 IODMAEventSource::validFIFODepth(IOByteCount depth, IODirection direction)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -189,7 +189,7 @@ IODMAEventSource::validFIFODepth(IOByteCount depth, IODirection direction)
 IOReturn
 IODMAEventSource::setFrameSize(UInt8 byteCount)
 {
-       if ((dmaController == 0) || (dmaIndex == 0xFFFFFFFF)) {
+       if ((dmaController == NULL) || (dmaIndex == 0xFFFFFFFF)) {
                return kIOReturnError;
        }
 
@@ -224,7 +224,7 @@ IODMAEventSource::checkForWork(void)
 void
 IODMAEventSource::completeDMACommand(IODMACommand *dmaCommand)
 {
-       if (dmaCompletionAction != 0) {
+       if (dmaCompletionAction != NULL) {
                IOSimpleLockLock(dmaCommandsCompletedLock);
                queue_enter(&dmaCommandsCompleted, dmaCommand, IODMACommand *, fCommandChain);
                IOSimpleLockUnlock(dmaCommandsCompletedLock);
@@ -243,7 +243,7 @@ IODMAEventSource::notifyDMACommand(IODMACommand *dmaCommand, IOReturn status, IO
        dmaCommand->reserved->fActualByteCount = actualByteCount;
        dmaCommand->reserved->fTimeStamp = timeStamp;
 
-       if (dmaNotificationAction != 0) {
+       if (dmaNotificationAction != NULL) {
                (*dmaNotificationAction)(owner, this, dmaCommand, status, actualByteCount, timeStamp);
        }
 }