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Commit 9735b7ef authored by Ken Kawasaki's avatar Ken Kawasaki Committed by David S. Miller
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smc91c92_cs: fix the problem that lan & modem does not work simultaneously 



smc91c92_cs:
  Fix the problem that lan & modem does not work simultaneously
  in the Megahertz multi-function card.
  We need to write MEGAHERTZ_ISR to retrigger interrupt.

Signed-off-by: default avatarKen Kawasaki <ken_kawasaki@spring.nifty.jp>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 9f888160

drivers/net/pcmcia/smc91c92_cs.c

+13 −5
Original line number Diff line number Diff line
@@ -1505,12 +1505,20 @@ static irqreturn_t smc_interrupt(int irq, void *dev_id) 
	writeb(cor & ~COR_IREQ_ENA, smc->base + MOT_LAN + CISREG_COR);

	writeb(cor, smc->base + MOT_LAN + CISREG_COR);

    }

#ifdef DOES_NOT_WORK

    if (smc->base != NULL) { /* Megahertz MFC's */

	readb(smc->base+MEGAHERTZ_ISR);

	readb(smc->base+MEGAHERTZ_ISR);



    if ((smc->base != NULL) &&  /* Megahertz MFC's */

	(smc->manfid == MANFID_MEGAHERTZ) &&

	(smc->cardid == PRODID_MEGAHERTZ_EM3288)) {



	u_char tmp;

	tmp = readb(smc->base+MEGAHERTZ_ISR);

	tmp = readb(smc->base+MEGAHERTZ_ISR);



	/* Retrigger interrupt if needed */

	writeb(tmp, smc->base + MEGAHERTZ_ISR);

	writeb(tmp, smc->base + MEGAHERTZ_ISR);

    }

#endif



    spin_unlock(&smc->lock);

    return IRQ_RETVAL(handled);

}