title: Why does patch not find this file?
body: <p>I would like to apply a patch to the u-boot sources but some how, Linux doesn't let me. What I have:</p>
  
  <pre><code>reg@ubuntu:~/NextGen/trunk/FW/thirdparty/u-boot$ patch -p1 &lt; ../u-boot/u-boot-2013.01-wr.patch 
  can't find file to patch at input line 4
  Perhaps you used the wrong -p or --strip option?
  The text leading up to this was:
  --------------------------
  |diff -uNr u-boot-2013.01/arch/powerpc/cpu/mpc85xx/cpu_init.c u-boot-2013.01.modified/arch/powerpc/cpu/mpc85xx/cpu_init.c
  |--- u-boot-2013.01/arch/powerpc/cpu/mpc85xx/cpu_init.c 2013-01-15 13:47:42.000000000 -0800
  |+++ u-boot-2013.01.modified/arch/powerpc/cpu/mpc85xx/cpu_init.c        2013-05-16 10:58:08.973906692 -0700
  --------------------------
  File to patch: ^C
  reg@ubuntu:~/NextGen/trunk/FW/thirdparty/u-boot$ ls -l u-boot-2013.01/arch/powerpc/cpu/mpc85xx/cpu_init.c
  -rw-r--r-- 1 reg reg 16745 Jan 15  2013 u-boot-2013.01/arch/powerpc/cpu/mpc85xx/cpu_init.c
  reg@ubuntu:~/NextGen/trunk/FW/thirdparty/u-boot$ 
  </code></pre>
  
  <p>So why can it not find the file when it's perfectly at the right location? What's going on here?</p>