From: Tushar Behera Date: Fri, 9 May 2014 11:07:40 +0000 (+0530) Subject: mfd: syscon: Include linux/err.h to fix build error X-Git-Tag: omap-for-v3.16/fixes-against-rc1~91^2~6^2~21 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d2379909374ef2de6bc57ed8966c7ca8c9dfb82;p=pandora-kernel.git mfd: syscon: Include linux/err.h to fix build error commit df73de9b0d412 ("mfd: syscon: Return -ENOSYS if CONFIG_MFD_SYSCON is not enabled") introduced fallbacks for APIs, but missed out on adding the header file. This would work only if linux/err.h is also included in the source code from where this file is included. It would be better to include linux/err.h in file to remove possible build errors. Without this patch, we get following and similar build errors if this header file is included in some source file and CONFIG_MFD_SYSCON is not enabled. include/linux/mfd/syscon.h: In function ‘syscon_node_to_regmap’: include/linux/mfd/syscon.h:30:2: error: implicit declaration of function ‘ERR_PTR’ [-Werror=implicit-function-declaration] return ERR_PTR(-ENOSYS); ^ include/linux/mfd/syscon.h:30:18: error: ‘ENOSYS’ undeclared (first use in this function) return ERR_PTR(-ENOSYS); ^ Signed-off-by: Tushar Behera Signed-off-by: Lee Jones --- Reading git-diff-tree failed