Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=0741a951e8489ef2889d9e3eecf33bb29b779dd0
Commit: 0741a951e8489ef2889d9e3eecf33bb29b779dd0
Parent: 10d7425d201e866ee0c57424860e06118dae2500
Author: Diego Woitasen <[EMAIL PROTECTED]>
AuthorDate: Wed Nov 21 15:07:08 2007 -0800
Committer: Greg Kroah-Hartman <[EMAIL PROTECTED]>
CommitDate: Fri Feb 1 15:04:21 2008 -0800
PCI: remove unneeded lock_kernel() in drivers/pci/syscall.c.
sys_pciconfig_{read,write}() are protected against PCI removal with the
reference count in struct pci_dev. The concurrency of
pci_user_{read,write}_config_* functions are already protected by pci_lock
in drivers/pci/access.c.
Signed-off-by: Diego Woitasen <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
Signed-off-by: Greg Kroah-Hartman <[EMAIL PROTECTED]>
---
drivers/pci/syscall.c | 5 -----
1 files changed, 0 insertions(+), 5 deletions(-)
diff --git a/drivers/pci/syscall.c b/drivers/pci/syscall.c
index 2ac050d..645d7a6 100644
--- a/drivers/pci/syscall.c
+++ b/drivers/pci/syscall.c
@@ -34,7 +34,6 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
if (!dev)
goto error;
- lock_kernel();
switch (len) {
case 1:
cfg_ret = pci_user_read_config_byte(dev, off, &byte);
@@ -47,10 +46,8 @@ sys_pciconfig_read(unsigned long bus, unsigned long dfn,
break;
default:
err = -EINVAL;
- unlock_kernel();
goto error;
};
- unlock_kernel();
err = -EIO;
if (cfg_ret != PCIBIOS_SUCCESSFUL)
@@ -107,7 +104,6 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
if (!dev)
return -ENODEV;
- lock_kernel();
switch(len) {
case 1:
err = get_user(byte, (u8 __user *)buf);
@@ -140,7 +136,6 @@ sys_pciconfig_write(unsigned long bus, unsigned long dfn,
err = -EINVAL;
break;
}
- unlock_kernel();
pci_dev_put(dev);
return err;
}
-
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