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Date:   Mon, 18 Sep 2017 22:48:16 +0200
From:   Arnd Bergmann <>
To:     Zhang Rui <>,
        Eduardo Valentin <>
Cc:     Leonard Crestez <>,
        Shawn Guo <>, Arnd Bergmann <>,,
Subject: [PATCH] thermal: imx: add NVMEM dependency

The driver now fails to link into vmlinux when CONFIG_NVMEM is a loadable

drivers/thermal/imx_thermal.o: In function `imx_thermal_probe':
imx_thermal.c:(.text+0x360): undefined reference to `nvmem_cell_read_u32'
imx_thermal.c:(.text+0x360): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `nvmem_cell_read_u32'
imx_thermal.c:(.text+0x388): undefined reference to `nvmem_cell_read_u32'
imx_thermal.c:(.text+0x388): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `nvmem_cell_read_u32'

This adds a Kconfig dependency to force it to be a module as well
when its dependency is loadable.

Fixes: 7fe5ba04fcdc ("thermal: imx: Add support for reading OCOTP through nvmem")
Signed-off-by: Arnd Bergmann <>
 drivers/thermal/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 07002df4f83a..cb14f1ec5953 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -206,6 +206,7 @@ config HISI_THERMAL
 	tristate "Temperature sensor driver for Freescale i.MX SoCs"
+	depends on NVMEM || !NVMEM
 	depends on MFD_SYSCON
 	depends on OF

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