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Commit ecb39080 authored by David Rientjes's avatar David Rientjes Committed by Greg Kroah-Hartman
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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: default avatarDavid Rientjes <rientjes@google.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent cd68602f

drivers/pci/proc.c

+2 −1
Original line number Diff line number Diff line
@@ -129,7 +129,7 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp 
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 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof 
	}



	*ppos = pos;

	i_size_write(ino, dp->size);

	return nbytes;

}