Fix: copy frontend_ops before modifying
Signed-off-by: NYe Jianjun (Joey) <joeyye@trident.com.cn>
Signed-off-by: NPatrick Boettcher <pb@linuxtv.org>
Signed-off-by: NJohannes Stezenbach <js@linuxtv.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>