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| author | Manuel Lauss <manuel.lauss@googlemail.com> | 2009-10-14 12:22:20 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2009-11-02 12:00:08 +0100 |
| commit | 44f2c586a3553154bc6549eb696c7716c85f910b (patch) | |
| tree | 1050bd39b5fd1d67c63dddd939223b60ad7f9a44 /arch/mips/include/asm/serial.h | |
| parent | fcc152f3bf55cec61167b173774cbf717b0ff5e4 (diff) | |
| download | blackbird-op-linux-44f2c586a3553154bc6549eb696c7716c85f910b.tar.gz blackbird-op-linux-44f2c586a3553154bc6549eb696c7716c85f910b.zip | |
MIPS: Alchemy: Fix hang with high-frequency edge interrupts
The handle_edge_irq() flowhandler disables edge int sources which occur
too fast (i.e. another edge comes in before the irq handler function
had a chance to finish). Currently, the mask_ack() callback does not
ack the edges in hardware, leading to an endless loop in the flowhandler
where it tries to shut up the irq source.
When I rewrote the alchemy IRQ code I wrongly assumed the mask_ack()
callback was only used by the level flowhandler, hence it omitted the
(at the time pointless) edge acks. Turned out I was wrong; so here
is a complete mask_ack implementation for Alchemy IC, which fixes
the above mentioned problem.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/include/asm/serial.h')
0 files changed, 0 insertions, 0 deletions
