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path: root/drivers/uio/uio_pci_generic.c
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Diffstat (limited to 'drivers/uio/uio_pci_generic.c')
-rw-r--r--drivers/uio/uio_pci_generic.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/drivers/uio/uio_pci_generic.c b/drivers/uio/uio_pci_generic.c
index fc22e1e6f215..02bd47bdee1c 100644
--- a/drivers/uio/uio_pci_generic.c
+++ b/drivers/uio/uio_pci_generic.c
@@ -24,7 +24,6 @@
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/uio_driver.h>
-#include <linux/spinlock.h>
#define DRIVER_VERSION "0.01.0"
#define DRIVER_AUTHOR "Michael S. Tsirkin <mst@redhat.com>"
@@ -33,7 +32,6 @@
struct uio_pci_generic_dev {
struct uio_info info;
struct pci_dev *pdev;
- spinlock_t lock; /* guards command register accesses */
};
static inline struct uio_pci_generic_dev *
@@ -57,7 +55,6 @@ static irqreturn_t irqhandler(int irq, struct uio_info *info)
BUILD_BUG_ON(PCI_COMMAND % 4);
BUILD_BUG_ON(PCI_COMMAND + 2 != PCI_STATUS);
- spin_lock_irq(&gdev->lock);
pci_block_user_cfg_access(pdev);
/* Read both command and status registers in a single 32-bit operation.
@@ -83,7 +80,6 @@ static irqreturn_t irqhandler(int irq, struct uio_info *info)
done:
pci_unblock_user_cfg_access(pdev);
- spin_unlock_irq(&gdev->lock);
return ret;
}
@@ -158,7 +154,6 @@ static int __devinit probe(struct pci_dev *pdev,
gdev->info.irq_flags = IRQF_SHARED;
gdev->info.handler = irqhandler;
gdev->pdev = pdev;
- spin_lock_init(&gdev->lock);
if (uio_register_device(&pdev->dev, &gdev->info))
goto err_register;