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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>
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@ -129,7 +129,7 @@ proc_bus_pci_read(struct file *file, char __user *buf, size_t nbytes, loff_t *pp
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static ssize_t
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proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, loff_t *ppos)
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{
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const struct inode *ino = file->f_path.dentry->d_inode;
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struct inode *ino = file->f_path.dentry->d_inode;
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const struct proc_dir_entry *dp = PDE(ino);
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struct pci_dev *dev = dp->data;
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int pos = *ppos;
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@ -193,6 +193,7 @@ proc_bus_pci_write(struct file *file, const char __user *buf, size_t nbytes, lof
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}
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*ppos = pos;
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i_size_write(ino, dp->size);
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return nbytes;
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}
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