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a1eb1cdf4e
linux/arch/m68k
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Finn Thain a1eb1cdf4e m68k/mac: Fix apparent race condition in Baboon interrupt dispatch 
The algorithm used in baboon_irq() appears to be subject to a race
condition: an IRQ flag could be lost if asserted between the MOV
instructions from and to the interrupt flag register. However,
testing shows that the write to the flag register has no effect.
Rewrite this loop to remove the apparent race condition.

No-one seems to know how to clear Baboon IRQ flags, or whether
that's even possible, so add a comment about this.

Tested-by: Stan Johnson <userm57@yahoo.com>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
2018-03-19 10:22:59 +01:00
..
68000 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
amiga treewide: Switch DEFINE_TIMER callbacks to struct timer_list * 2017-11-21 15:57:05 -08:00
apollo License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atari m68k/atari: Modernize printing of kernel messages 2017-02-12 10:36:49 +01:00
bvme6000 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
coldfire m68k: add Sysam stmark2 open board support 2017-11-07 13:27:38 +10:00
configs Driver Core updates for 4.16-rc1 2018-02-01 10:00:28 -08:00
emu net: Remove usage of net_device last_rx member 2017-01-18 17:22:49 -05:00
fpsp040 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
hp300 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ifpsp060 scripts/spelling.txt: add regsiter -> register spelling mistake 2017-05-08 17:15:13 -07:00
include bug.h: work around GCC PR82365 in BUG() 2018-02-21 15:35:43 -08:00
kernel dma-mapping: clear harmful GFP_* flags in common code 2018-01-15 09:34:55 +01:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mac m68k/mac: Fix apparent race condition in Baboon interrupt dispatch 2018-03-19 10:22:59 +01:00
math-emu m68k: Assorted spelling fixes 2016-07-03 14:05:28 +02:00
mm signal: Don't use structure initializers for struct siginfo 2018-01-22 19:07:08 -06:00
mvme16x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mvme147 m68k/mvme147: Modernize printing of kernel messages 2017-02-12 10:36:50 +01:00
q40 m68k/q40: Modernize printing of kernel messages 2017-02-12 10:36:51 +01:00
sun3 License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sun3x License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tools/amiga License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
install.sh
Kconfig License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.bus License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.cpu m68k: allow ColdFire m5441x parts to run with MMU enabled 2017-11-06 08:25:20 +10:00
Kconfig.debug License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.devices License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kconfig.machine m68k: add Sysam stmark2 open board support 2017-11-07 13:27:38 +10:00
Makefile