Subject: [PATCH AUTOSEL 4.9 4/7] net: micrel: fix KS8851_MLL Kconfig

From: Sasha Levin <[email-masked]>
Date: Mon, 11 Apr 2022 20:52:45 -0400

From: Randy Dunlap <[email-masked]>

[ Upstream commit c3efcedd272aa6dd5929e20cf902a52ddaa1197a ]

KS8851_MLL selects MICREL_PHY, which depends on PTP_1588_CLOCK_OPTIONAL,
so make KS8851_MLL also depend on PTP_1588_CLOCK_OPTIONAL since
'select' does not follow any dependency chains.

Fixes kconfig warning and build errors:

WARNING: unmet direct dependencies detected for MICREL_PHY
  Depends on [m]: NETDEVICES [=y] && PHYLIB [=y] && PTP_1588_CLOCK_OPTIONAL [=m]
  Selected by [y]:
  - KS8851_MLL [=y] && NETDEVICES [=y] && ETHERNET [=y] && NET_VENDOR_MICREL [=y] && HAS_IOMEM [=y]

ld: drivers/net/phy/micrel.o: in function `lan8814_ts_info':
micrel.c:(.text+0xb35): undefined reference to `ptp_clock_index'
ld: drivers/net/phy/micrel.o: in function `lan8814_probe':
micrel.c:(.text+0x2586): undefined reference to `ptp_clock_register'

Signed-off-by: Randy Dunlap <[email-masked]>
Cc: "David S. Miller" <[email-masked]>
Cc: Jakub Kicinski <[email-masked]>
Cc: Paolo Abeni <[email-masked]>
Signed-off-by: David S. Miller <[email-masked]>
Signed-off-by: Sasha Levin <[email-masked]>
---
 drivers/net/ethernet/micrel/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/micrel/Kconfig b/drivers/net/ethernet/micrel/Kconfig
index b7e2f49696b7..aa12bace8673 100644
--- a/drivers/net/ethernet/micrel/Kconfig
+++ b/drivers/net/ethernet/micrel/Kconfig
@@ -45,6 +45,7 @@ config KS8851
 config KS8851_MLL
 	tristate "Micrel KS8851 MLL"
 	depends on HAS_IOMEM
+	depends on PTP_1588_CLOCK_OPTIONAL
 	select MII
 	---help---
 	  This platform driver is for Micrel KS8851 Address/data bus
-- 
2.35.1