kernel patch problem

Hello ,

here I am applying patch to my kernel But it is giving beloved error

patch < patch-2.6.28.10 -p0
can't find file to patch at input line 5
Perhaps you used the wrong -p or --strip option?
The text leading up to this was:
--------------------------
|diff --git a/Documentation/filesystems/sysfs-pci.txt b/Documentation/filesystems/sysfs-pci.txt
|index 68ef488..de99749 100644
|--- a/Documentation/filesystems/sysfs-pci.txt
|+++ b/Documentation/filesystems/sysfs-pci.txt
--------------------------
File to patch:


please help me.

venubabu