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FB: fix unsafe use of disable_irq() in mx3fb.c

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mx3fb.c calls disable_irq() from a DMA callback, i.e., in an IRQ-handler
context, which has always been unsafe, and became deadly after the merge of
threaded interrupt handler support. Use disable_irq_nosync() instead.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Guennadi Liakhovetski 2009-05-12 21:41:03 +02:00 committed by Sascha Hauer
parent c2e5307b90
commit c8a4fb472c
1 changed files with 1 additions and 1 deletions
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2
drivers/video/mx3fb.c
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@ -706,7 +706,7 @@ static void mx3fb_dma_done(void *arg)
dev_dbg(mx3fb->dev, "irq %d callback\n", ichannel->eof_irq);
/* We only need one interrupt, it will be re-enabled as needed */
disable_irq(ichannel->eof_irq);
disable_irq_nosync(ichannel->eof_irq);
complete(&mx3_fbi->flip_cmpl);
}