Hi, guys,
In intelWaitIrq() of intel_ioctl.c file, there is the following
code:
void intelWaitIrq( intelContextPtr intel, int seq )
{
...
do {
ret = drmCommandWrite( intel->driFd, DRM_I830_IRQ_WAIT, &intel->iw,
sizeof(intel->iw) );
} while (ret == -EAGAIN || ret == -EINTR);
...
}
But the kernel i915 DRM driver doesn't return EAGAIN for
ioctl DRM_I830_IRQ_WAIT. Refer to i915_wait_irq() in file
i915_irq.c and DRM_WAIT_ON macro in drm_os_linux.h
>From the macro of DRM_WAIT_ON, I think i915_wait_irq()/
ioctl DRM_I830_IRQ_WAIT can get return value of -EBUYS
or -EINTR only, no -EAGAIN.
So, I guess that the checking for -EAGAIN should be replaced
with the checking for -EBUSY in intelWaitIrq() of intel_ioctl.c,
Is my understanding right ?
BTW, I cam not in this alias, please reply me directly.
thanks
-minskey
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