Hello Andrzej, On Mon, Oct 26, 2015 at 9:03 AM, Andrzej Hajda <a.hajda@xxxxxxxxxxx> wrote: > HDMI driver called directly function from MIXER driver to invalidate modes > not supported by MIXER. The patch replaces the hack with proper .atomic_check > callback. > > Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx> > --- It seems this patch is not a drop-in replacement since it causes a "Division by zero in kernel" error with v4.4-rc2 on an Exynos5800 Peach Pi, causing the display console to not be initialized. X works correctly though. An interesting data point is that it only happens when the HDMI monitor is not plugged on the first mode set, everything works correctly when booting with a HDMI monitor plugged. Following is the relevant messages from the kernel log buffer: [ 14.295702] Division by zero in kernel. [ 14.298191] CPU: 0 PID: 2008 Comm: Xorg Not tainted 4.4.0-rc2 #111 [ 14.304243] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree) [ 14.310334] [<c0015f08>] (unwind_backtrace) from [<c0012c94>] (show_stack+0x10/0x14) [ 14.318072] [<c0012c94>] (show_stack) from [<c01f8f80>] (dump_stack+0x84/0xc4) [ 14.325264] [<c01f8f80>] (dump_stack) from [<c01f7a90>] (Ldiv0+0x8/0x10) [ 14.331943] [<c01f7a90>] (Ldiv0) from [<c02b34f8>] (fimd_commit+0x1f0/0x2b4) [ 14.338968] [<c02b34f8>] (fimd_commit) from [<c02b0788>] (exynos_drm_crtc_enable+0x1c/0x28) [ 14.347303] [<c02b0788>] (exynos_drm_crtc_enable) from [<c028b328>] (drm_atomic_helper_commit_modeset_enables+0x98/0x198) [ 14.358227] [<c028b328>] (drm_atomic_helper_commit_modeset_enables) from [<c02afc40>] (exynos_atomic_commit_complete+0x2c/0x1c4) [ 14.369761] [<c02afc40>] (exynos_atomic_commit_complete) from [<c02b0604>] (exynos_atomic_commit+0x180/0x1cc) [ 14.379681] [<c02b0604>] (exynos_atomic_commit) from [<c028c770>] (drm_atomic_helper_set_config+0x6c/0x90) [ 14.389301] [<c028c770>] (drm_atomic_helper_set_config) from [<c029cabc>] (drm_mode_set_config_internal+0x58/0xd4) [ 14.399629] [<c029cabc>] (drm_mode_set_config_internal) from [<c02a18d0>] (drm_mode_setcrtc+0x148/0x4bc) [ 14.409078] [<c02a18d0>] (drm_mode_setcrtc) from [<c029489c>] (drm_ioctl+0x12c/0x49c) [ 14.416892] [<c029489c>] (drm_ioctl) from [<c00ec19c>] (do_vfs_ioctl+0x498/0x6c8) [ 14.424346] [<c00ec19c>] (do_vfs_ioctl) from [<c00ec400>] (SyS_ioctl+0x34/0x5c) [ 14.431638] [<c00ec400>] (SyS_ioctl) from [<c000f600>] (ret_fast_syscall+0x0/0x3c) Best regards, Javier _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
