On Thu, Oct 09, 2014 at 02:43:02PM +0900, Alexandre Courbot wrote: > But there might be another issue, which is that calls to > drm_vblank_get() will return -EINVAL if invoked between drm_blank_off > and drm_blank_on. Is this really the desired behavior? Can it at least > happen? If so, how are drivers supposed to react to this situation? I've not yet seen the commit which causes this problem, but I hope that drm_wait_vblank() isn't affected by this. In current mainline, drm_vblank_get() is used inside drm_wait_vblank(), which is called as a result of userspace calling DRM_IOCTL_WAIT_VBLANK. So, what is the effect of this change on user applications making use of the vblank wait ioctl - and is that change intended? -- FTTC broadband for 0.8mile line: currently at 9.5Mbps down 400kbps up according to speedtest.net. -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
