From e4115805cf2020da94e8bd1296243605cda487ff Mon Sep 17 00:00:00 2001 From: Daniel Ritz Date: Tue, 20 Sep 2005 14:17:37 -0700 Subject: [PATCH] yenta: optimize interrupt handler Don't waste cpu time in yenta interrupt handler when the interrupt was for another device. Signed-off-by: Daniel Ritz Signed-off-by: Dominik Brodowski --- drivers/pcmcia/yenta_socket.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'drivers/pcmcia/yenta_socket.c') diff --git a/drivers/pcmcia/yenta_socket.c b/drivers/pcmcia/yenta_socket.c index ec6ab65f087..8bfe72b7130 100644 --- a/drivers/pcmcia/yenta_socket.c +++ b/drivers/pcmcia/yenta_socket.c @@ -531,6 +531,9 @@ static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) csc = exca_readb(socket, I365_CSC); + if (!(cb_event || csc)) + return IRQ_NONE; + events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { @@ -544,10 +547,7 @@ static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs) if (events) pcmcia_parse_events(&socket->socket, events); - if (cb_event || csc) - return IRQ_HANDLED; - - return IRQ_NONE; + return IRQ_HANDLED; } static void yenta_interrupt_wrapper(unsigned long data) -- cgit v1.2.3