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dect: coa: clear all pending interrupts on init 

Occasionally after an error the card will deliver spurious interrupts when
reloading the driver. Clear all pending interrupts to avoid this.

Signed-off-by: Patrick McHardy <kaber@trash.net>
This commit is contained in:
Patrick McHardy 2010-08-17 17:39:53 +02:00
parent b1e8712628
commit b4b93a19e8
1 changed files with 6 additions and 2 deletions
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8
drivers/dect/coa/sc1442x.c
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@ -100,6 +100,8 @@
/* Interrupt status 1: DIP/CLK100/TIM1/TIM0/SPI/UART/P10/KEYB */
#define SC14424_RESET_INT_PENDING_1 0x1f02
/* Interrupt status 2: CLK8K/TONE */
#define SC14424_RESET_INT_PENDING_2 0x1f03
/* DIP_INT and CLK100_INT priority level */
#define SC14424_INT_PRIORITY_1 0x1f06
@ -988,10 +990,12 @@ int sc1442x_init_device(struct coa_device *dev)
sc1442x_init_slot(dev, slot);
if (dev->type == COA_TYPE_PCI) {
/* Clear pening interrupts */
sc1442x_writeb(dev, SC14424_RESET_INT_PENDING_1, 0xff);
sc1442x_writeb(dev, SC14424_RESET_INT_PENDING_2, 0xff);
/* Enable DIP interrupt */
sc1442x_writeb(dev, SC14424_INT_PRIORITY_1, 0x70);
/* Enable SPI */
/* Enable SPI for LED control */
sc1442x_writeb(dev, SC14424_P1_DIR_REG, 0xd6);
}
return 0;