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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: David Rientjes <rientjes@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
David Rientjes 2007-09-27 13:41:17 -07:00 committed by Greg Kroah-Hartman
parent cd68602f36
commit ecb3908046
1 changed files with 2 additions and 1 deletions
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3
drivers/pci/proc.c
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@ -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;
}