This commit fixes an issue where an ioctl call is made but the return

value is not checked. It isn't a big deal. But it would be nice if the
user knew that an ioctl to a device tanked.

1 files changed, 6 insertions, 1 deletions

diff --git a/libopie2/opiecore/device/odevice.cpp b/libopie2/opiecore/device/odevice.cpp
index e4233eb..aecccca 100644
--- a/libopie2/opiecore/device/odevice.cpp
+++ b/libopie2/opiecore/device/odevice.cpp
@@ -57,24 +57,25 @@
 #include <opie2/oresource.h>
 
 /* STD */
 #include <fcntl.h>
 #include <math.h>
 #include <stdlib.h>
 #include <signal.h>
 #include <sys/ioctl.h>
 #include <sys/time.h>
 #include <unistd.h>
 #ifndef QT_NO_SOUND
 #include <linux/soundcard.h>
+#include <errno.h>
 #endif
 
 namespace Opie {
 namespace Core {
 
 static const char* PATH_PROC_CPUINFO = "/proc/cpuinfo";
 
 
 /* STATIC and common implementation */
 /* EXPORT */ ODistribution distributions[] = {
     { System_Familiar,        "FamiliarLinux",   "/etc/familiar-version" },
     { System_OpenZaurus,      "OpenZaurus",      "/etc/openzaurus-version" },
@@ -740,33 +741,37 @@ void ODevice::addPreHandler(QWSServer::KeyboardFilter*aFilter)
  * @param aFilter The filter to be removed from the Opie::Core::OKeyFilter
  * @see Opie::Core::ODevice::addPreHandler
  */
 void ODevice::remPreHandler(QWSServer::KeyboardFilter*aFilter)
 {
     Opie::Core::OKeyFilter::inst()->remPreHandler(aFilter);
 }
 
 
 /**
  * @internal
  *
+ * Returns the volume back to the user preference after an alarm is finished.
+ *
  * @see changeMixerForAlarm
  */
 void ODevice::playingStopped() {
     if ( sender() )
         const_cast<QObject*>(sender())->disconnect( this );
 
 #ifndef QT_NO_SOUND
     if ( d->m_sound >= 0 ) {
-        ::ioctl ( d->m_sound, MIXER_WRITE( d->m_mixer ), &d->m_vol );
+        if (::ioctl ( d->m_sound, MIXER_WRITE( d->m_mixer ), &d->m_vol ) == -1)
+            qWarning( "ODevice::playingStopped() - "
+                      "unable to change volume back (%s)", strerror( errno ) );
         ::close ( d->m_sound );
     }
 #endif
 }
 
 
 /**
  * \brief Change the Volume for the Alarm and set it back after playing is finished
  *
  * If you play an Alarm Sound you might want to change the Mixer to
  * full volume and ignore the user setting. After it \sa Sound::isFinished
  * you would turn the volume back to the user preference.