patch by Pieter Grimmerink: properly initialize and check for LCD fd

diff --git a/lib/gdi/lcd.cpp b/lib/gdi/lcd.cpp
index 8f8cd06529952bfc24b363ba75e8b91107e781b5..ac273c61730a9638425a65a9d46c2d7abe0c8b70 100644 (file)
--- a/lib/gdi/lcd.cpp
+++ b/lib/gdi/lcd.cpp
@@ -16,6 +16,7 @@ eDBoxLCD *eDBoxLCD::instance;
 
 eLCD::eLCD(eSize size): res(size)
 {
+       lcdfd = -1;
        locked=0;
        _buffer=new unsigned char[res.height()*res.width()];
        memset(_buffer, 0, res.height()*res.width());
@@ -111,10 +112,10 @@ int eDBoxLCD::setLCDBrightness(int brightness)
 
 eDBoxLCD::~eDBoxLCD()
 {
-       if (lcdfd>0)
+       if (lcdfd>=0)
        {
                close(lcdfd);
-               lcdfd=0;
+               lcdfd=-1;
        }
 }
 
@@ -141,7 +142,7 @@ void eDBoxLCD::update()
                                raw[y*132+x]=(pix^inverted);
                        }
                }
-               if (lcdfd>0)
+               if (lcdfd >= 0)
                        write(lcdfd, raw, 132*8);
        } else
        {
@@ -153,7 +154,7 @@ void eDBoxLCD::update()
                        for (x=0; x<128 / 2; x++)
                                raw[y*64+x] = (_buffer[y*132 + x * 2 + 2] & 0xF0) |(_buffer[y*132 + x * 2 + 1 + 2] >> 4);
                }
-               if (lcdfd > 0)
+               if (lcdfd >= 0)
                        write(lcdfd, raw, 64*64);
        }
 }