linux-kernel - [PATCH 1/1] thermal: Fix build error of missing devm_ioremap

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Date:   Mon, 29 Apr 2019 12:47:36 +0300
From:   Talel Shenhar <talel@...zon.com>
To:     <talel@...zon.com>, <robh@...nel.org>, <edubezval@...il.com>,
        <daniel.lezcano@...aro.org>, <dwmw@...zon.co.uk>,
        <jonnyc@...zon.com>, <rui.zhang@...el.com>, <hhhawa@...zon.com>,
        <ronenk@...zon.com>, <hanochu@...zon.com>,
        <linux-kernel@...r.kernel.org>, <linux-pm@...r.kernel.org>
Subject: [PATCH 1/1] thermal: Fix build error of missing devm_ioremap_resource on UM

The devres.o gets linked if HAS_IOMEM is present so on ARCH=um
allyesconfig (COMPILE_TEST) failed on many files with:

drivers/thermal/thermal_mmio.o:
In function 'thermal_mmio_probe':thermal_mmio.c:(.text+0xe1):
undefined reference to `devm_ioremap_resource'

The users of devm_ioremap_resource() which are compile-testable
should depend on HAS_IOMEM.

Reported-by: kbuild test robot <lkp@...el.com>
Signed-off-by: Talel Shenhar <talel@...zon.com>
---
 drivers/thermal/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig
index 41f3943..66a709d 100644
--- a/drivers/thermal/Kconfig
+++ b/drivers/thermal/Kconfig
@@ -203,6 +203,7 @@ config THERMAL_EMULATION
 config THERMAL_MMIO
 	tristate "Generic Thermal MMIO driver"
 	depends on OF || COMPILE_TEST
+	depends on HAS_IOMEM
 	help
 	  This option enables the generic thermal MMIO driver that will use
 	  memory-mapped reads to get the temperature.  Any HW/System that
-- 
2.7.4