[PATCH 3.11 085/137] staging: vt6655: Fix Warning on boot handle_irq_event_percpu.
From: Luis Henriques <hidden>
Date: 2014-08-18 09:51:58
Also in:
lkml
Subsystem:
staging subsystem, the rest · Maintainers:
Greg Kroah-Hartman, Linus Torvalds
3.11.10.15 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Malcolm Priestley <tvboxspy@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 <tvboxspy@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> [ luis: backported to 3.11: adjusted context ] Signed-off-by: Luis Henriques <redacted> --- 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 08b250f01dae..d170b6f9db7c 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c@@ -2434,6 +2434,7 @@ static irqreturn_t device_intr(int irq, void *dev_instance) { int handled = 0; unsigned char byData = 0; int ii = 0; + unsigned long flags; // unsigned char byRSSI; MACvReadISR(pDevice->PortOffset, &pDevice->dwIsr);
@@ -2459,7 +2460,8 @@ 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);
@@ -2700,7 +2702,8 @@ 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