ps3fb: atomic fixes
ps3fb: Use atomic_dec_if_positive() instead of bogus atomic_read()/atomic_dec() combinations Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -680,13 +680,10 @@ EXPORT_SYMBOL_GPL(ps3fb_wait_for_vsync);
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void ps3fb_flip_ctl(int on)
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void ps3fb_flip_ctl(int on)
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{
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{
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if (on) {
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if (on)
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if (atomic_read(&ps3fb.ext_flip) > 0) {
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atomic_dec_if_positive(&ps3fb.ext_flip);
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atomic_dec(&ps3fb.ext_flip);
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else
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}
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} else {
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atomic_inc(&ps3fb.ext_flip);
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atomic_inc(&ps3fb.ext_flip);
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}
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}
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}
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EXPORT_SYMBOL_GPL(ps3fb_flip_ctl);
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EXPORT_SYMBOL_GPL(ps3fb_flip_ctl);
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@ -786,8 +783,7 @@ static int ps3fb_ioctl(struct fb_info *info, unsigned int cmd,
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case PS3FB_IOCTL_OFF:
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case PS3FB_IOCTL_OFF:
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DPRINTK("PS3FB_IOCTL_OFF:\n");
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DPRINTK("PS3FB_IOCTL_OFF:\n");
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if (atomic_read(&ps3fb.ext_flip) > 0)
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atomic_dec_if_positive(&ps3fb.ext_flip);
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atomic_dec(&ps3fb.ext_flip);
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retval = 0;
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retval = 0;
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break;
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break;
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