The patch titled
b2c2-flexcop-pci spinlock lock problem fix
has been added to the -mm tree. Its filename is
b2c2-flexcop-pci-spinlock-lock-problem-fix.patch
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See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
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------------------------------------------------------
Subject: b2c2-flexcop-pci spinlock lock problem fix
From: Borgi2008 <borgi2008@xxxxxxxx>
I've created a small patch for the current kernel version which fixes a bug
in the DVB driver for b2c2-flexcop based pci devices. During
initialization of the pci device spin_lock_irq is called before
spin_lock_init. I've also created a bugreport in bugzilla:
http://bugzilla.kernel.org/show_bug.cgi?id=8301
Cc: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/media/dvb/b2c2/flexcop-pci.c | 9 +++++----
1 files changed, 5 insertions(+), 4 deletions(-)
diff -puN drivers/media/dvb/b2c2/flexcop-pci.c~b2c2-flexcop-pci-spinlock-lock-problem-fix drivers/media/dvb/b2c2/flexcop-pci.c
--- a/drivers/media/dvb/b2c2/flexcop-pci.c~b2c2-flexcop-pci-spinlock-lock-problem-fix
+++ a/drivers/media/dvb/b2c2/flexcop-pci.c
@@ -127,10 +127,11 @@ static irqreturn_t flexcop_pci_isr(int i
{
struct flexcop_pci *fc_pci = dev_id;
struct flexcop_device *fc = fc_pci->fc_dev;
+ unsigned long flags;
flexcop_ibi_value v;
irqreturn_t ret = IRQ_HANDLED;
- spin_lock_irq(&fc_pci->irq_lock);
+ spin_lock_irqsave(&fc_pci->irq_lock,flags);
v = fc->read_ibi_reg(fc,irq_20c);
@@ -194,7 +195,7 @@ static irqreturn_t flexcop_pci_isr(int i
ret = IRQ_NONE;
}
- spin_unlock_irq(&fc_pci->irq_lock);
+ spin_unlock_irqrestore(&fc_pci->irq_lock,flags);
return ret;
}
@@ -293,12 +294,12 @@ static int flexcop_pci_init(struct flexc
}
pci_set_drvdata(fc_pci->pdev, fc_pci);
-
+ spin_lock_init(&fc_pci->irq_lock);
if ((ret = request_irq(fc_pci->pdev->irq, flexcop_pci_isr,
IRQF_SHARED, DRIVER_NAME, fc_pci)) != 0)
goto err_pci_iounmap;
- spin_lock_init(&fc_pci->irq_lock);
+
fc_pci->init_state |= FC_PCI_INIT;
return ret;
_
Patches currently in -mm which might be from borgi2008@xxxxxxxx are
b2c2-flexcop-pci-spinlock-lock-problem-fix.patch
-
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