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The header file <linux/reset.h> uses errno constant(s) and the ERR_PTR() macro but does not #include the appropriate header files that provide those facilities, so add 2 header files to fix build errors. CC [M] drivers/gpu/drm/lima/lima_device.o In file included from ../drivers/gpu/drm/lima/lima_device.c:5:0: ../include/linux/reset.h: In function ‘__device_reset’: ../include/linux/reset.h:77:25: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? 0 : -ENOTSUPP; ../include/linux/reset.h:77:25: note: each undeclared identifier is reported only once for each function it appears in ../include/linux/reset.h: In function ‘__of_reset_control_get’: ../include/linux/reset.h:85:36: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? NULL : ERR_PTR(-ENOTSUPP); ../include/linux/reset.h: In function ‘__reset_control_get’: ../include/linux/reset.h:93:36: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? NULL : ERR_PTR(-ENOTSUPP); ../include/linux/reset.h: In function ‘__devm_reset_control_get’: ../include/linux/reset.h:101:36: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? NULL : ERR_PTR(-ENOTSUPP); ../include/linux/reset.h: In function ‘devm_reset_control_array_get’: ../include/linux/reset.h:107:36: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? NULL : ERR_PTR(-ENOTSUPP); ../include/linux/reset.h: In function ‘of_reset_control_array_get’: ../include/linux/reset.h:114:36: error: ‘ENOTSUPP’ undeclared (first use in this function) return optional ? NULL : ERR_PTR(-ENOTSUPP); In file included from ../drivers/gpu/drm/lima/lima_device.c:5:0: ../include/linux/reset.h: In function ‘__devm_reset_control_get’: ../include/linux/reset.h:102:1: warning: control reaches end of non-void function [-Wreturn-type] } Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.