Commit 35976d4d authored Jul 08, 2009 by Florian Fainelli Committed by David S. Miller Jul 08, 2009

r6040: restore MIER register correctly when IRQ line is shared



When the r6040 device IRQ line is shared we will enter the driver
interrupt service routine, mask off the device interrupt enable
register (MIER) and return with IRQ_NONE, we would then leave the
device with interrupts disabled, this patch fixes that issue.

Reported-by: Steve Holland <sdh4@iastate.edu>
Signed-off-by: Joe Chou <joe.chou@rdc.com.tw>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 345aa031

drivers/net/r6040.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -704,8 +704,11 @@ static irqreturn_t r6040_interrupt(int irq, void *dev_id)
		/* Read MISR status and clear */
		status = ioread16(ioaddr + MISR);

		if (status == 0x0000 \|\| status == 0xffff)
		if (status == 0x0000 \|\| status == 0xffff) {
		/* Restore RDC MAC interrupt */
		iowrite16(misr, ioaddr + MIER);
		return IRQ_NONE;
		}

		/* RX interrupt request */
		if (status & RX_INTS) {