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| author | Eero Tamminen <oak@helsinkinet.fi> | 2024-06-24 17:49:01 +0300 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2024-07-01 14:23:05 +0200 |
| commit | f70065a9fd988983b2c693631b801f25a615fc04 (patch) | |
| tree | 67c5cb035f3d662479fdfde4b47f4e0cc3c02dbc /arch/m68k/atari | |
| parent | 156872f08e33af7a23c1e4827f6127d7861b23fd (diff) | |
| download | linux-stable-f70065a9fd988983b2c693631b801f25a615fc04.tar.gz linux-stable-f70065a9fd988983b2c693631b801f25a615fc04.tar.bz2 linux-stable-f70065a9fd988983b2c693631b801f25a615fc04.zip | |
m68k: atari: Fix TT bootup freeze / unexpected (SCU) interrupt messages
Avoid freeze on Atari TT / MegaSTe boot with continuous messages of:
unexpected interrupt from 112
Which was due to VBL interrupt being enabled in SCU sys mask, but there
being no handler for that any more.
(Bug and fix were first verified on real Atari TT HW by Christian,
this patch later on in Hatari emulator.)
Fixes: 1fa0b29f3a43f9dd ("fbdev: Kill Atari vblank cursor blinking")
Reported-by: Nicolas Pomarède <npomarede@corp.free.fr>
Closes: https://listengine.tuxfamily.org/lists.tuxfamily.org/hatari-devel/2024/06/msg00016.html
Closes: https://lore.kernel.org/all/9aa793d7-82ed-4fbd-bce5-60810d8a9119@helsinkinet.fi
Tested-by: Christian Zietz <czietz@gmx.net>
Signed-off-by: Eero Tamminen <oak@helsinkinet.fi>
Reviewed-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/20240624144901.5236-1-oak@helsinkinet.fi
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68k/atari')
| -rw-r--r-- | arch/m68k/atari/ataints.c | 6 |
1 files changed, 1 insertions, 5 deletions
diff --git a/arch/m68k/atari/ataints.c b/arch/m68k/atari/ataints.c index 23256434191c..0465444ceb21 100644 --- a/arch/m68k/atari/ataints.c +++ b/arch/m68k/atari/ataints.c @@ -301,11 +301,7 @@ void __init atari_init_IRQ(void) if (ATARIHW_PRESENT(SCU)) { /* init the SCU if present */ - tt_scu.sys_mask = 0x10; /* enable VBL (for the cursor) and - * disable HSYNC interrupts (who - * needs them?) MFP and SCC are - * enabled in VME mask - */ + tt_scu.sys_mask = 0x0; /* disable all interrupts */ tt_scu.vme_mask = 0x60; /* enable MFP and SCC ints */ } else { /* If no SCU and no Hades, the HSYNC interrupt needs to be |