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[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 <daniel.ritz@gmx.ch>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
This commit is contained in:
Daniel Ritz 2005-09-20 14:17:37 -07:00 committed by Dominik Brodowski
parent 37f7795544
commit e4115805cf
1 changed files with 4 additions and 4 deletions
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8
drivers/pcmcia/yenta_socket.c
View File

@ -531,6 +531,9 @@ static irqreturn_t yenta_interrupt(int irq, void *dev_id, struct pt_regs *regs)
csc = exca_readb(socket, I365_CSC); csc = exca_readb(socket, I365_CSC);
if (!(cb_event || csc))
return IRQ_NONE;
events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ; events = (cb_event & (CB_CD1EVENT | CB_CD2EVENT)) ? SS_DETECT : 0 ;
events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0; events |= (csc & I365_CSC_DETECT) ? SS_DETECT : 0;
if (exca_readb(socket, I365_INTCTL) & I365_PC_IOCARD) { 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) if (events)
pcmcia_parse_events(&socket->socket, events); pcmcia_parse_events(&socket->socket, events);
if (cb_event || csc) return IRQ_HANDLED;
return IRQ_HANDLED;
return IRQ_NONE;
} }
static void yenta_interrupt_wrapper(unsigned long data) static void yenta_interrupt_wrapper(unsigned long data)