Hi, Building allyesconfig on ARCH=um fails with: drivers/mfd/syscon.c: In function ‘of_syscon_register’: drivers/mfd/syscon.c:67:9: error: implicit declaration of function ‘ioremap’ [-Werror=implicit-function-declaration] base = ioremap(res.start, resource_size(&res)); Since commit c89c0114955a ("mfd: syscon: Set regmap max_register in of_syscon_register") the syscon depends on HAS_IOMEM because it uses the ioremap(). However syscon is often directly selected... so first the dependency on HAS_IOMEM has to be added to all selecting symbols. Comments are welcomed whether this is appropriate approach. The last patch "mfd: syscon: Fix build of missing ioremap on UM" should enter all other to avoid kbuild complains like: warning: (ST_IRQCHIP && HIP04_ETH && STMMAC_PLATFORM && DWMAC_IPQ806X && DWMAC_LPC18XX && DWMAC_ROCKCHIP && DWMAC_SOCFPGA && DWMAC_STI && TI_CPSW && PINCTRL_ROCKCHIP && PINCTRL_DOVE && POWER_RESET_KEYSTONE && S3C2410_WATCHDOG && VIDEO_OMAP3 && VIDEO_S5P_FIMC && USB_XHCI_MTK && RTC_DRV_AT91SAM9 && LPC18XX_DMAMUX && VIDEO_OMAP4 && HWSPINLOCK_QCOM && ATMEL_ST && QCOM_GSBI && PHY_HI6220_USB) selects MFD_SYSCON which has unmet direct dependencies (HAS_IOMEM) Best regards, Krzysztof Krzysztof Kozlowski (15): clocksource: atmel: Add missing MFD_SYSCON dependency on HAS_IOMEM dmaengine: nxp: Add missing MFD_SYSCON dependency on HAS_IOMEM hwspinlock: qcom: Add missing MFD_SYSCON dependency on HAS_IOMEM irqchip: st: Add missing MFD_SYSCON dependency on HAS_IOMEM phy: hi6220: Add missing MFD_SYSCON dependency on HAS_IOMEM pinctrl: rockchip: Add missing MFD_SYSCON dependency on HAS_IOMEM pinctrl: mvebu: Add missing MFD_SYSCON dependency on HAS_IOMEM rtc: at91sam9: Add missing MFD_SYSCON dependency on HAS_IOMEM media: platform: Add missing MFD_SYSCON dependency on HAS_IOMEM net: ethernet: Add missing MFD_SYSCON dependency on HAS_IOMEM power: reset: keystone: Add missing MFD_SYSCON dependency on HAS_IOMEM soc: qcom: Add missing MFD_SYSCON dependency on HAS_IOMEM staging: media: omap4iss: Add missing MFD_SYSCON dependency on HAS_IOMEM usb: xhci: mtk: Add missing MFD_SYSCON dependency on HAS_IOMEM mfd: syscon: Fix build of missing ioremap on UM drivers/clocksource/Kconfig | 1 + drivers/dma/Kconfig | 1 + drivers/hwspinlock/Kconfig | 1 + drivers/irqchip/Kconfig | 1 + drivers/media/platform/Kconfig | 1 + drivers/media/platform/exynos4-is/Kconfig | 1 + drivers/mfd/Kconfig | 1 + drivers/net/ethernet/hisilicon/Kconfig | 1 + drivers/net/ethernet/stmicro/stmmac/Kconfig | 6 ++++++ drivers/net/ethernet/ti/Kconfig | 1 + drivers/phy/Kconfig | 1 + drivers/pinctrl/Kconfig | 1 + drivers/pinctrl/mvebu/Kconfig | 1 + drivers/power/reset/Kconfig | 1 + drivers/rtc/Kconfig | 1 + drivers/soc/qcom/Kconfig | 1 + drivers/staging/media/omap4iss/Kconfig | 1 + drivers/usb/host/Kconfig | 1 + 18 files changed, 23 insertions(+) -- 2.5.0 _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel