m68k: mac: Fix VIA timer counter accesses

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This resolves some bugs that affect VIA timer counter accesses.
Avoid lost interrupts caused by reading the counter low byte register.
Make allowance for the fact that the counter will be decremented to
0xFFFF before being reloaded.

Fixes: 1da177e4c3 ("Linux-2.6.12-rc2")
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>

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Finn Thain 2018-12-01 11:53:10 +11:00 • committed by Geert Uytterhoeven

parent 1efdd4bd25

commit 0ca7ce7db7

1 changed files with 53 additions and 49 deletions

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arch/m68k/mac/via.c

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