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Fix buttom half irq handling if acc is already disabled

Nils Faerber authored on 05/05/2013 22:07:15
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@@ -379,6 +379,9 @@ void mw_acc_handle_irq(void)
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 	char tstr[16];
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 #endif
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+	if (AccelState != ACCEL_STATE_ENABLED)
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+		return;
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+
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 	mw_acc_i2c_read(KIONIX_INT_SRC_REG1, &srcreg1, 1);
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 #if defined MW_DEVBOARD_V2
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 	snprintf(tstr, 16, "accsrc1: 0x%02x\n", srcreg1);