pci: write file size to inode on proc bus file write
When a /proc/bus/pci file is written to, the size of that PCI device's
configuration space must be written to the inode. Otherwise, it is
possible for the file to specify a size of 0 on stat if a task is holding
the same file open.
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/pci/proc.c b/drivers/pci/proc.c
index 73714db..716439e 100644
--- a/drivers/pci/proc.c
+++ b/drivers/pci/proc.c
@@ -129,7 +129,7 @@
static ssize_t
proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos)
{
- const struct inode *ino = file->f_path.dentry->d_inode;
+ struct inode *ino = file->f_path.dentry->d_inode;
const struct proc_dir_entry *dp = PDE(ino);
struct pci_dev *dev = dp->data;
int pos = *ppos;
@@ -193,6 +193,7 @@
}
*ppos = pos;
+ i_size_write(ino, dp->size);
return nbytes;
}