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SubjectRe: [PATCH net 1/3] cpsw/netcp: cpts depends on posix_timers
On Fri, 16 Dec 2016, Arnd Bergmann wrote:

> With posix timers having become optional, we get a build error with
> the cpts time sync option of the CPSW driver:
>
> drivers/net/ethernet/ti/cpts.c: In function 'cpts_find_ts':
> drivers/net/ethernet/ti/cpts.c:291:23: error: implicit declaration of function 'ptp_classify_raw';did you mean 'ptp_classifier_init'? [-Werror=implicit-function-declaration]
>
> It really makes no sense to build this driver if we can't use PTP,
> so it's better to go back to 'select PTP_1588_CLOCK' but instead
> add a dependency on POSIX_TIMERS.

Why not depend on PTP_1588_CLOCK directly instead?

> Fixes: baa73d9e478f ("posix-timers: Make them configurable")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> drivers/net/ethernet/ti/Kconfig | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig
> index 296c8efd0038..366e29ff8605 100644
> --- a/drivers/net/ethernet/ti/Kconfig
> +++ b/drivers/net/ethernet/ti/Kconfig
> @@ -76,7 +76,8 @@ config TI_CPSW
> config TI_CPTS
> tristate "TI Common Platform Time Sync (CPTS) Support"
> depends on TI_CPSW || TI_KEYSTONE_NETCP
> - imply PTP_1588_CLOCK
> + depends on POSIX_TIMERS
> + select PTP_1588_CLOCK
> ---help---
> This driver supports the Common Platform Time Sync unit of
> the CPSW Ethernet Switch and Keystone 2 1g/10g Switch Subsystem.
> --
> 2.9.0
>
>

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