net: ethernet: ti: Remove TI_CPTS_MOD workaround

My recent commit b6d49cab44b5 ("net: Make PTP-specific drivers depend on
PTP_1588_CLOCK") exposes a missing dependency in defconfigs that select
TI_CPTS without selecting PTP_1588_CLOCK, leading to linker errors of the
form:

drivers/net/ethernet/ti/cpsw.o: in function `cpsw_ndo_stop':
cpsw.c:(.text+0x680): undefined reference to `cpts_unregister'
 ...

That's because TI_CPTS_MOD (which is the symbol gating the _compilation_ of
cpts.c) now depends on PTP_1588_CLOCK, and so is not enabled in these
configurations, but TI_CPTS (which is the symbol gating _calls_ to the cpts
functions) _is_ enabled. So we end up compiling calls to functions that
don't exist, resulting in the linker errors.

This patch fixes build errors and restores previous behavior by:
 - ensure PTP_1588_CLOCK=y in TI specific configs and CPTS will be built
 - remove TI_CPTS_MOD and, instead, add dependencies from CPTS in
   TI_CPSW/TI_KEYSTONE_NETCP/TI_CPSW_SWITCHDEV as below:

   config TI_CPSW_SWITCHDEV
   ...
    depends on TI_CPTS || !TI_CPTS

   which will ensure proper dependencies PTP_1588_CLOCK -> TI_CPTS ->
TI_CPSW/TI_KEYSTONE_NETCP/TI_CPSW_SWITCHDEV and build type selection.

Note. For NFS boot + CPTS all of above configs have to be built-in.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Dan Murphy <dmurphy@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Fixes: b6d49cab44b5 ("net: Make PTP-specific drivers depend on PTP_1588_CLOCK")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Clay McClure <clay@daemons.net>
[grygorii.strashko@ti.com: rewording, add deps cpsw/netcp from cpts, drop IS_REACHABLE]
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/arch/arm/configs/keystone_defconfig b/arch/arm/configs/keystone_defconfig
index 11e2211..84a3b05 100644 (file)
--- a/arch/arm/configs/keystone_defconfig
+++ b/arch/arm/configs/keystone_defconfig
@@ -147,6 +147,7 @@ CONFIG_I2C_DAVINCI=y
 CONFIG_SPI=y
 CONFIG_SPI_DAVINCI=y
 CONFIG_SPI_SPIDEV=y
+CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_SINGLE=y
 CONFIG_GPIOLIB=y
 CONFIG_GPIO_SYSFS=y

diff --git a/arch/arm/configs/omap2plus_defconfig b/arch/arm/configs/omap2plus_defconfig
index 3cc3ca5..8b83d4a 100644 (file)
--- a/arch/arm/configs/omap2plus_defconfig
+++ b/arch/arm/configs/omap2plus_defconfig
@@ -274,6 +274,7 @@ CONFIG_SPI_TI_QSPI=m
 CONFIG_HSI=m
 CONFIG_OMAP_SSI=m
 CONFIG_SSI_PROTOCOL=m
+CONFIG_PTP_1588_CLOCK=y
 CONFIG_PINCTRL_SINGLE=y
 CONFIG_DEBUG_GPIO=y
 CONFIG_GPIO_SYSFS=y

diff --git a/drivers/net/ethernet/ti/Kconfig b/drivers/net/ethernet/ti/Kconfig
index 8e34878..62f809b 100644 (file)
--- a/drivers/net/ethernet/ti/Kconfig
+++ b/drivers/net/ethernet/ti/Kconfig
@@ -49,6 +49,7 @@ config TI_CPSW_PHY_SEL
 config TI_CPSW
        tristate "TI CPSW Switch Support"
        depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || COMPILE_TEST
+       depends on TI_CPTS || !TI_CPTS
        select TI_DAVINCI_MDIO
        select MFD_SYSCON
        select PAGE_POOL
@@ -64,6 +65,7 @@ config TI_CPSW_SWITCHDEV
        tristate "TI CPSW Switch Support with switchdev"
        depends on ARCH_DAVINCI || ARCH_OMAP2PLUS || COMPILE_TEST
        depends on NET_SWITCHDEV
+       depends on TI_CPTS || !TI_CPTS
        select PAGE_POOL
        select TI_DAVINCI_MDIO
        select MFD_SYSCON
@@ -77,23 +79,16 @@ config TI_CPSW_SWITCHDEV
          will be called cpsw_new.
 
 config TI_CPTS
-       bool "TI Common Platform Time Sync (CPTS) Support"
-       depends on TI_CPSW || TI_KEYSTONE_NETCP || TI_CPSW_SWITCHDEV || COMPILE_TEST
+       tristate "TI Common Platform Time Sync (CPTS) Support"
+       depends on ARCH_OMAP2PLUS || ARCH_KEYSTONE || COMPILE_TEST
        depends on COMMON_CLK
-       depends on POSIX_TIMERS
+       depends on 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.
          The unit can time stamp PTP UDP/IPv4 and Layer 2 packets, and the
          driver offers a PTP Hardware Clock.
 
-config TI_CPTS_MOD
-       tristate
-       depends on TI_CPTS
-       depends on PTP_1588_CLOCK
-       default y if TI_CPSW=y || TI_KEYSTONE_NETCP=y || TI_CPSW_SWITCHDEV=y
-       default m
-
 config TI_K3_AM65_CPSW_NUSS
        tristate "TI K3 AM654x/J721E CPSW Ethernet driver"
        depends on ARCH_K3 && OF && TI_K3_UDMA_GLUE_LAYER
@@ -114,6 +109,7 @@ config TI_KEYSTONE_NETCP
        select TI_DAVINCI_MDIO
        depends on OF
        depends on KEYSTONE_NAVIGATOR_DMA && KEYSTONE_NAVIGATOR_QMSS
+       depends on TI_CPTS || !TI_CPTS
        ---help---
          This driver supports TI's Keystone NETCP Core.
 

diff --git a/drivers/net/ethernet/ti/Makefile b/drivers/net/ethernet/ti/Makefile
index 5379219..cb26a9d 100644 (file)
--- a/drivers/net/ethernet/ti/Makefile
+++ b/drivers/net/ethernet/ti/Makefile
@@ -13,7 +13,7 @@ obj-$(CONFIG_TI_DAVINCI_EMAC) += ti_davinci_emac.o
 ti_davinci_emac-y := davinci_emac.o davinci_cpdma.o
 obj-$(CONFIG_TI_DAVINCI_MDIO) += davinci_mdio.o
 obj-$(CONFIG_TI_CPSW_PHY_SEL) += cpsw-phy-sel.o
-obj-$(CONFIG_TI_CPTS_MOD) += cpts.o
+obj-$(CONFIG_TI_CPTS) += cpts.o
 obj-$(CONFIG_TI_CPSW) += ti_cpsw.o
 ti_cpsw-y := cpsw.o davinci_cpdma.o cpsw_ale.o cpsw_priv.o cpsw_sl.o cpsw_ethtool.o
 obj-$(CONFIG_TI_CPSW_SWITCHDEV) += ti_cpsw_new.o