From: Mathieu Segaud <mathieu.segaud@regala.cx>
Date: Thu, 10 Jan 2008 13:27:12 +0000 (+0100)
Subject: PCI: Convert drivers/pci/proc.c to use unlocked_ioctl
X-Git-Tag: MMI-PSA29.97-13-9~37560^2~10
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=add771840be591fd926a5ca27c22e622c13d1294;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

PCI: Convert drivers/pci/proc.c to use unlocked_ioctl

Change access to inode thru file->f_dentry->d_inode, and add explicit
lock/unlock_kernel() calls.


Signed-off-by: Mathieu Segaud <mathieu.segaud@regala.cx>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 48ca9ae29e16..2bf159b9c1cd 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -11,6 +11,7 @@
 #include <linux/module.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
+#include <linux/smp_lock.h>
 #include <linux/capability.h>
 #include <asm/uaccess.h>
 #include <asm/byteorder.h>
@@ -202,15 +203,18 @@ struct pci_filp_private {
 	int write_combine;
 };
 
-static int proc_bus_pci_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
+			       unsigned long arg)
 {
-	const struct proc_dir_entry *dp = PDE(inode);
+	const struct proc_dir_entry *dp = PDE(file->f_dentry->d_inode);
 	struct pci_dev *dev = dp->data;
 #ifdef HAVE_PCI_MMAP
 	struct pci_filp_private *fpriv = file->private_data;
 #endif /* HAVE_PCI_MMAP */
 	int ret = 0;
 
+	lock_kernel();
+
 	switch (cmd) {
 	case PCIIOC_CONTROLLER:
 		ret = pci_domain_nr(dev->bus);
@@ -239,6 +243,7 @@ static int proc_bus_pci_ioctl(struct inode *inode, struct file *file, unsigned i
 		break;
 	};
 
+	unlock_kernel();
 	return ret;
 }
 
@@ -291,7 +296,7 @@ static const struct file_operations proc_bus_pci_operations = {
 	.llseek		= proc_bus_pci_lseek,
 	.read		= proc_bus_pci_read,
 	.write		= proc_bus_pci_write,
-	.ioctl		= proc_bus_pci_ioctl,
+	.unlocked_ioctl	= proc_bus_pci_ioctl,
 #ifdef HAVE_PCI_MMAP
 	.open		= proc_bus_pci_open,
 	.release	= proc_bus_pci_release,