3.13.11.6 -stable review patch. If anyone has any objections, please let me
know.
------------------
From: Malcolm Priestley <tvbox...@gmail.com>
commit 6cff1f6ad4c615319c1a146b2aa0af1043c5e9f5 upstream.
WARNING: CPU: 0 PID: 929 at /home/apw/COD/linux/kernel/irq/handle.c:147
handle_irq_event_percpu+0x1d1/0x1e0()
irq 17 handler device_intr+0x0/0xa80 [vt6655_stage] enabled interrupts
Using spin_lock_irqsave appears to fix this.
Signed-off-by: Malcolm Priestley <tvbox...@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
drivers/staging/vt6655/device_main.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/vt6655/device_main.c
b/drivers/staging/vt6655/device_main.c
index e93fdc8..d3e8336a 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -2431,6 +2431,7 @@ static irqreturn_t device_intr(int irq, void
*dev_instance) {
unsigned char byData = 0;
int ii = 0;
// unsigned char byRSSI;
+ unsigned long flags;
MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
@@ -2455,7 +2456,8 @@ static irqreturn_t device_intr(int irq, void
*dev_instance) {
handled = 1;
MACvIntDisable(pDevice->PortOffset);
- spin_lock_irq(&pDevice->lock);
+
+ spin_lock_irqsave(&pDevice->lock, flags);
//Make sure current page is 0
VNSvInPortB(pDevice->PortOffset + MAC_REG_PAGE1SEL, &byOrgPageSel);
@@ -2696,7 +2698,8 @@ static irqreturn_t device_intr(int irq, void
*dev_instance) {
MACvSelectPage1(pDevice->PortOffset);
}
- spin_unlock_irq(&pDevice->lock);
+ spin_unlock_irqrestore(&pDevice->lock, flags);
+
MACvIntEnable(pDevice->PortOffset, IMR_MASK_VALUE);
return IRQ_RETVAL(handled);
--
1.9.1
--
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