We used to have opencoded ehci_readl()/writel() which required no external functions to be called. Now with attempt to switch to generic readl()/writel() accessors we see a missing declaration of those accessors in ehci-ppc4xx. Something like that happens if applied http://patchwork.ozlabs.org/patch/726714/: ---------------->8--------------- CC drivers/usb/host/ehci-ppc4xx.o drivers/usb/host/ehci-ppc4xx.c: In function 'ehci_hcd_init': drivers/usb/host/ehci-ppc4xx.c:23:3: warning: implicit declaration of function 'readl' [-Wimplicit-function-declaration] HC_LENGTH(ehci_readl(&(*hccr)->cr_capbase))); ^ ---------------->8--------------- Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> Cc: Tom Rini <trini at konsulko.com> Cc: Marek Vasut <marex at denx.de> Cc: Stefan Roese <sr at denx.de> --- drivers/usb/host/ehci-ppc4xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/host/ehci-ppc4xx.c b/drivers/usb/host/ehci-ppc4xx.c index 9aee3ff786cb..9d235776428e 100644 --- a/drivers/usb/host/ehci-ppc4xx.c +++ b/drivers/usb/host/ehci-ppc4xx.c @@ -8,6 +8,7 @@ */ #include <common.h> #include <usb.h> +#include <asm/io.h> #include "ehci.h" -- 2.7.4