Re: [PATCH v2 2/3] media: rockchip: Introduce driver for Rockhip's camera interface

[kbuild test robot <lkp@intel.com>]

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Hi Maxime,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on rockchip/for-next robh/for-next v5.7-rc7 next-20200529]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Maxime-Chevallier/media-rockchip-Introduce-driver-for-the-camera-interface-on-PX30/20200531-081952
base:   git://linuxtv.org/media_tree.git master
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2388a096e7865c043e83ece4e26654bd3d1a20d5)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All warnings (new ones prefixed by >>, old ones prefixed by <<):

In file included from drivers/media/platform/rockchip/cif/dev.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined]
#define FRAME_END                       (0x01 << 0)
^
arch/x86/include/asm/frame.h:89:9: note: previous definition is here
#define FRAME_END
^
>> drivers/media/platform/rockchip/cif/dev.c:253:13: warning: variable 'v4l2_dev' is uninitialized when used here [-Wuninitialized]
v4l2_info(v4l2_dev, "No reserved memory region assign to CIFn");
^~~~~~~~
include/media/v4l2-common.h:67:25: note: expanded from macro 'v4l2_info'
v4l2_printk(KERN_INFO, dev, fmt , ## arg)
^~~
include/media/v4l2-common.h:58:28: note: expanded from macro 'v4l2_printk'
printk(level "%s: " fmt, (dev)->name , ## arg)
^~~
drivers/media/platform/rockchip/cif/dev.c:216:30: note: initialize the variable 'v4l2_dev' to silence this warning
struct v4l2_device *v4l2_dev;
^
= NULL
2 warnings generated.
--
In file included from drivers/media/platform/rockchip/cif/capture.c:22:
>> drivers/media/platform/rockchip/cif/regs.h:113:9: warning: 'FRAME_END' macro redefined [-Wmacro-redefined]
#define FRAME_END                       (0x01 << 0)
^
arch/x86/include/asm/frame.h:89:9: note: previous definition is here
#define FRAME_END
^
1 warning generated.

vim +/FRAME_END +113 drivers/media/platform/rockchip/cif/regs.h

   110	
   111	/* CIF INTSTAT */
   112	#define INTSTAT_CLS			(0x3FF)
 > 113	#define FRAME_END			(0x01 << 0)
   114	#define LINE_ERR			(0x01 << 2)
   115	#define PST_INF_FRAME_END		(0x01 << 9)
   116	#define FRAME_END_CLR			(0x01 << 0)
   117	#define LINE_ERR_CLR			(0x01 << 2)
   118	#define PST_INF_FRAME_END_CLR		(0x01 << 9)
   119	#define INTSTAT_ERR			(0xFC)
   120	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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