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16 lines
529 B
Diff
16 lines
529 B
Diff
Index: linux-3.1.1/drivers/cbus/tahvo.c
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===================================================================
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--- linux-3.1.1.orig/drivers/cbus/tahvo.c 2011-11-17 18:51:03.708374259 +0100
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+++ linux-3.1.1/drivers/cbus/tahvo.c 2011-11-17 18:57:17.739067493 +0100
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@@ -137,8 +137,10 @@ static irqreturn_t tahvo_irq_handler(int
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u16 id;
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u16 im;
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+ mutex_lock(&tahvo->mutex);
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id = __tahvo_read_reg(tahvo, TAHVO_REG_IDR);
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im = __tahvo_read_reg(tahvo, TAHVO_REG_IMR);
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+ mutex_unlock(&tahvo->mutex);
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id &= ~im;
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if (!id) {
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