redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

PCI: kill BKL in /proc/pci 

All operations in the pci procfs ioctl functions are
atomic, so no lock is needed here.

Also add a compat_ioctl method, since all the commands
are compatible in 32 bit mode.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: linux-pci@vger.kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
hifive-unleashed-5.1
Arnd Bergmann 2010-07-04 00:02:28 +02:00 committed by Jesse Barnes
parent 93e75faba3
commit 991f739544
1 changed files with 1 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/pci/proc.c
View File

@ -212,8 +212,6 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
#endif /* HAVE_PCI_MMAP */
int ret = 0;
lock_kernel();
switch (cmd) {
case PCIIOC_CONTROLLER:
ret = pci_domain_nr(dev->bus);
@ -242,7 +240,6 @@ static long proc_bus_pci_ioctl(struct file *file, unsigned int cmd,
break;
};
unlock_kernel();
return ret;
}
@ -306,6 +303,7 @@ static const struct file_operations proc_bus_pci_operations = {
.read = proc_bus_pci_read,
.write = proc_bus_pci_write,
.unlocked_ioctl = proc_bus_pci_ioctl,
.compat_ioctl = proc_bus_pci_ioctl,
#ifdef HAVE_PCI_MMAP
.open = proc_bus_pci_open,
.release = proc_bus_pci_release,