linux-kernel - [PATCH] pch_gbe: Fix build error by selecting all the possible dependencies.

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Message-Id: <1349775792-12573-1-git-send-email-haicheng.lee@gmail.com>
Date:	Tue,  9 Oct 2012 17:43:12 +0800
From:	Haicheng Li <haicheng.lee@...il.com>
To:	davem@...emloft.net
Cc:	haicheng.li@...ux.intel.com, linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org, fengguang.wu@...el.com,
	Haicheng Li <haicheng.lee@...il.com>
Subject: [PATCH] pch_gbe: Fix build error by selecting all the possible dependencies.

Fengguang reported a kernel build failure as following:
drivers/built-in.o: In function `pch_gbe_ioctl':
pch_gbe_main.c:(.text+0x510370): undefined reference to `pch_ch_control_write'
pch_gbe_main.c:(.text+0x510393): undefined reference to `pch_ch_control_write'
pch_gbe_main.c:(.text+0x5103b3): undefined reference to `pch_ch_control_write'
...

It's a regression by commit da1586461. The root cause is that
the CONFIG_PPS is not set there, consequently CONFIG_PTP_1588_CLOCK
can not be set anyway, which finally causes ptp_pch and pch_gbe_main
build failures.

As David prefers to use *select* to fix such module co-dependency issues,
this patch explicitly selects all the possible dependencies of PCH_PTP.

Reported-by: Fengguang Wu <fengguang.wu@...el.com>
Reviewed-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Haicheng Li <haicheng.lee@...il.com>
---
 drivers/net/ethernet/oki-semi/pch_gbe/Kconfig |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
index 9730241..5296cc8 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/Kconfig
@@ -26,6 +26,9 @@ if PCH_GBE
 config PCH_PTP
 	bool "PCH PTP clock support"
 	default n
+	depends on EXPERIMENTAL
+	select PPS
+	select PTP_1588_CLOCK
 	select PTP_1588_CLOCK_PCH
 	---help---
 	  Say Y here if you want to use Precision Time Protocol (PTP) in the
-- 
1.7.1

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