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SubjectRe: [PATCH -next] usb: add usb.h stubs for CONFIG_USB not enabled
Hello.

On 19-05-2012 6:04, Randy Dunlap wrote:

> From: Randy Dunlap<rdunlap@xenotime.net>

> Add stubs for some usb core functions when CONFIG_USB
> is not enabled. This fixes these comedi build errors:

> ERROR: "usb_deregister" [drivers/staging/comedi/comedi.ko] undefined!
> ERROR: "usb_register_driver" [drivers/staging/comedi/comedi.ko] undefined!

> Signed-off-by: Randy Dunlap<rdunlap@xenotime.net>
> ---
> I am only adding the stubs that are needed for comedi to build.
> I expect that more stubs will be needed as more build errors are
> found. It seems to me that linux/usb.h might need more (major)
> moving of lines to support more stubs in the future.

> Documentation/usb/error-codes.txt | 2 ++
> include/linux/usb.h | 24 +++++++++++++++++++++++-
> 2 files changed, 25 insertions(+), 1 deletion(-)
>
> --- linux-next-20120518.orig/include/linux/usb.h
> +++ linux-next-20120518/include/linux/usb.h
> @@ -10,7 +10,7 @@
>
> #ifdef __KERNEL__
>
> -#include<linux/errno.h> /* for -ENODEV */
> +#include<linux/errno.h> /* for -ENODEV, -ENOSYS */
> #include<linux/delay.h> /* for mdelay() */
> #include<linux/interrupt.h> /* for in_interrupt() */
> #include<linux/list.h> /* for struct list_head */
> @@ -515,6 +515,8 @@ static inline struct usb_device *interfa
> return to_usb_device(intf->dev.parent);
> }
>
> +#if defined(CONFIG_USB) || defined(CONFIG_USB_MODULE)

You can use IS_ENABLED(CONFIG_USB) instead of these two now.

WBR, Sergei


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