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comparison src/joystick/linux/SDL_sysjoystick.c @ 896:b56dc586a5ef

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Date: Tue, 16 Mar 2004 12:40:33 +0000 From: Alan Swanson Subject: [SDL] [PATCH] Linux joystick evdev axis count fix The event device configuration under Linux does not check the returned ioctl value when reading the axis information. This means extra undefined axes are returned. Note, in EV_HandleEvents, the default for case EV_ABS is to return any axis information which is fine as we have already checked for all valid absolute axes. No new axes should be returned after opening the device. (Unless, of course, the evdev allows closing and reassigning a new device while in use and I can't believe that happens.)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 16 May 2004 22:48:06 +0000
parents dc29e5907694
children bbf8dcc8aed6
comparison
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895:ec659230eaac 896:b56dc586a5ef
592 continue; 592 continue;
593 } 593 }
594 if ( test_bit(i, absbit) ) { 594 if ( test_bit(i, absbit) ) {
595 int values[5]; 595 int values[5];
596 596
597 ioctl(fd, EVIOCGABS(i), values); 597 if ( ioctl(fd, EVIOCGABS(i), values) < 0 )
598 continue;
598 #ifdef DEBUG_INPUT_EVENTS 599 #ifdef DEBUG_INPUT_EVENTS
599 printf("Joystick has absolute axis: %x\n", i); 600 printf("Joystick has absolute axis: %x\n", i);
600 printf("Values = { %d, %d, %d, %d, %d }\n", 601 printf("Values = { %d, %d, %d, %d, %d }\n",
601 values[0], values[1], 602 values[0], values[1],
602 values[2], values[3], values[4]); 603 values[2], values[3], values[4]);