AuxXxilium/linux_dsm_epyc7002
1
0
Fork 0
mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2024-11-30 12:26:41 +07:00
Code Issues Actions Packages Projects Releases Wiki Activity

[POWERPC] 4xx: UIC add mask_ack callback

Browse Source 
This adds uic_mask_ack_irq() callback to PowerPC 4xx uic code
to avoid kernel crash. It is used for edge-triggered interrupts
by handle_uic_irq().

Signed-off-by: Valentine Barshak <vbarshak@ru.mvista.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
This commit is contained in:
Valentine Barshak 2007-11-14 07:25:21 +11:00 committed by Josh Boyer
parent 2ae24c521a
commit b8b799a497
1 changed files with 17 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
arch/powerpc/sysdev/uic.c
View File

@ -97,6 +97,22 @@ static void uic_ack_irq(unsigned int virq)
spin_unlock_irqrestore(&uic->lock, flags);
}
static void uic_mask_ack_irq(unsigned int virq)
{
struct uic *uic = get_irq_chip_data(virq);
unsigned int src = uic_irq_to_hw(virq);
unsigned long flags;
u32 er, sr;
sr = 1 << (31-src);
spin_lock_irqsave(&uic->lock, flags);
er = mfdcr(uic->dcrbase + UIC_ER);
er &= ~sr;
mtdcr(uic->dcrbase + UIC_ER, er);
mtdcr(uic->dcrbase + UIC_SR, sr);
spin_unlock_irqrestore(&uic->lock, flags);
}
static int uic_set_irq_type(unsigned int virq, unsigned int flow_type)
{
struct uic *uic = get_irq_chip_data(virq);
@ -152,7 +168,7 @@ static struct irq_chip uic_irq_chip = {
.typename = " UIC ",
.unmask = uic_unmask_irq,
.mask = uic_mask_irq,
/* .mask_ack = uic_mask_irq_and_ack, */
.mask_ack = uic_mask_ack_irq,
.ack = uic_ack_irq,
.set_type = uic_set_irq_type,
};