[14/99] sparc64: Set IRQF_DISABLED on LDC channel IRQs.

[Greg KH]

2.6.31-stable review patch.  If anyone has any objections, please let us know.

------------------
From: David S. Miller <davem@xxxxxxxxxxxxx>

[ Upstream commit c58543c869606532c2382f027d6466f4672ea756 ]

With lots of virtual devices it's easy to generate a lot of
events and chew up the kernel IRQ stack.

Reported-by: hyl <heyongli@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 arch/sparc/kernel/ldc.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/sparc/kernel/ldc.c
+++ b/arch/sparc/kernel/ldc.c
@@ -1242,13 +1242,13 @@ int ldc_bind(struct ldc_channel *lp, con
 	snprintf(lp->tx_irq_name, LDC_IRQ_NAME_MAX, "%s TX", name);
 
 	err = request_irq(lp->cfg.rx_irq, ldc_rx,
-			  IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+			  IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
 			  lp->rx_irq_name, lp);
 	if (err)
 		return err;
 
 	err = request_irq(lp->cfg.tx_irq, ldc_tx,
-			  IRQF_SAMPLE_RANDOM | IRQF_SHARED,
+			  IRQF_SAMPLE_RANDOM | IRQF_DISABLED | IRQF_SHARED,
 			  lp->tx_irq_name, lp);
 	if (err) {
 		free_irq(lp->cfg.rx_irq, lp);


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