Hi Luca,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linuxtv-media/master]
[also build test WARNING on v4.17-rc1 next-20180418]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Luca-Ceresoli/imx274-add-cropping-and-misc-improvements/20180413-234459
base:   git://linuxtv.org/media_tree.git master
config: i386-randconfig-h1-04190052 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/linux/dynamic_debug.h:6:0,
                    from include/linux/printk.h:329,
                    from include/linux/kernel.h:14,
                    from include/linux/clk.h:16,
                    from drivers/media//i2c/imx274.c:22:
   drivers/media//i2c/imx274.c: In function 'imx274_s_stream':
>> include/linux/jump_label.h:407:59: warning: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'int' [-Wformat=]
     else if (__builtin_types_compatible_p(typeof(*x), struct static_key_false)) \
                                                              ^
   include/linux/dynamic_debug.h:103:2: note: in expansion of macro 'static_branch_unlikely'
     static_branch_unlikely(&descriptor.key.dd_key_false)
     ^
   include/linux/dynamic_debug.h:134:6: note: in expansion of macro 'DYNAMIC_DEBUG_BRANCH'
     if (DYNAMIC_DEBUG_BRANCH(descriptor))   \
         ^
   include/linux/device.h:1364:2: note: in expansion of macro 'dynamic_dev_dbg'
     dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
     ^
   drivers/media//i2c/imx274.c:1027:2: note: in expansion of macro 'dev_dbg'
     dev_dbg(&imx274->client->dev, "%s : %s, mode index %lu\n", __func__,
     ^
--
   In file included from include/linux/dynamic_debug.h:6:0,
                    from include/linux/printk.h:329,
                    from include/linux/kernel.h:14,
                    from include/linux/clk.h:16,
                    from drivers/media/i2c/imx274.c:22:
   drivers/media/i2c/imx274.c: In function 'imx274_s_stream':
>> include/linux/jump_label.h:407:59: warning: format '%lu' expects argument of type 'long unsigned int', but argument 6 has type 'int' [-Wformat=]
     else if (__builtin_types_compatible_p(typeof(*x), struct static_key_false)) \
                                                              ^
   include/linux/dynamic_debug.h:103:2: note: in expansion of macro 'static_branch_unlikely'
     static_branch_unlikely(&descriptor.key.dd_key_false)
     ^
   include/linux/dynamic_debug.h:134:6: note: in expansion of macro 'DYNAMIC_DEBUG_BRANCH'
     if (DYNAMIC_DEBUG_BRANCH(descriptor))   \
         ^
   include/linux/device.h:1364:2: note: in expansion of macro 'dynamic_dev_dbg'
     dynamic_dev_dbg(dev, format, ##__VA_ARGS__); \
     ^
   drivers/media/i2c/imx274.c:1027:2: note: in expansion of macro 'dev_dbg'
     dev_dbg(&imx274->client->dev, "%s : %s, mode index %lu\n", __func__,
     ^

vim +407 include/linux/jump_label.h

11276d53 Peter Zijlstra 2015-07-24  401  
11276d53 Peter Zijlstra 2015-07-24  402  #define static_branch_unlikely(x)						\
11276d53 Peter Zijlstra 2015-07-24  403  ({										\
11276d53 Peter Zijlstra 2015-07-24  404  	bool branch;								\
11276d53 Peter Zijlstra 2015-07-24  405  	if (__builtin_types_compatible_p(typeof(*x), struct static_key_true))	\
11276d53 Peter Zijlstra 2015-07-24  406  		branch = arch_static_branch_jump(&(x)->key, false);		\
11276d53 Peter Zijlstra 2015-07-24 @407  	else if (__builtin_types_compatible_p(typeof(*x), struct static_key_false)) \
11276d53 Peter Zijlstra 2015-07-24  408  		branch = arch_static_branch(&(x)->key, false);			\
11276d53 Peter Zijlstra 2015-07-24  409  	else									\
11276d53 Peter Zijlstra 2015-07-24  410  		branch = ____wrong_branch_error();				\
81dcf89f Peter Zijlstra 2018-01-18  411  	unlikely(branch);							\
11276d53 Peter Zijlstra 2015-07-24  412  })
11276d53 Peter Zijlstra 2015-07-24  413  

:::::: The code at line 407 was first introduced by commit
:::::: 11276d5306b8e5b438a36bbff855fe792d7eaa61 locking/static_keys: Add a new static_key interface

:::::: TO: Peter Zijlstra <peterz@infradead.org>
:::::: CC: Ingo Molnar <mingo@kernel.org>

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