Devise and routing error

I'm using Devise to authenticate users and getting the following error at registration and sign in pages

No route matches {:action=>"search", :controller=>"devise/home"}

Apparently it's caused by

<%= link_to "Search", url_for(:controller => "home", :action => "search")

in layouts/application.html.erb

The setup is absolutely basic, here's routes.rb:

get "home/search"
devise_for 开发者_如何学Go:users
root :to => "home#index"

From http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to:

Be careful when using the older argument style, as an extra literal hash is needed:

link_to "Articles", { :controller => "articles" }, :id => "news", :class => "article"
# => <a href="/articles" class="article" id="news">Articles</a> 

Leaving the hash off gives the wrong link:

link_to "WRONG!", :controller => "articles", :id => "news", :class => "article"
# => <a href="/articles/index/news?class=article">WRONG!</a>

It is considered "preferable" to use named resource routes as described in the link above so that if your resource routes change, you don't have to manually update your links.