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Date: Sat, 15 Feb 2014 11:03:43 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Jim Davis <jim.epost@...il.com>,
Stephen Rothwell <sfr@...b.auug.org.au>,
linux-next <linux-next@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>,
linux-iio@...r.kernel.org
Subject: Re: randconfig build error with next-20140205, in drivers/iio/kfifo_buf.c
On 05/02/14 22:56, Jim Davis wrote:
> Building with the attached random configuration file,
>
> warning: (AD5933 && IIO_SIMPLE_DUMMY_BUFFER && TI_AM335X_ADC) selects
> IIO_KFIFO_BUF which has unmet direct dependencies (IIO && IIO_BUFFER)
>
> drivers/iio/kfifo_buf.c:13:20: error: field 'buffer' has incomplete type
> struct iio_buffer buffer;
> ^
> In file included from /home/jim/linux/arch/x86/include/asm/percpu.h:44:0,
> from /home/jim/linux/arch/x86/include/asm/preempt.h:5,
> from include/linux/preempt.h:18,
> from include/linux/spinlock.h:50,
> from include/linux/mmzone.h:7,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> drivers/iio/kfifo_buf.c: In function 'iio_request_update_kfifo':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:34:26: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *buf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for
> 'buf') [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:34:26: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *buf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_get_length_kfifo':
> drivers/iio/kfifo_buf.c:52:10: error: dereferencing pointer to incomplete type
> return r->length;
> ^
> drivers/iio/kfifo_buf.c: At top level:
> drivers/iio/kfifo_buf.c:55:8: error: type defaults to 'int' in
> declaration of 'IIO_BUFFER_ENABLE_ATTR' [-Werror=implicit-int]
> static IIO_BUFFER_ENABLE_ATTR;
> ^
> drivers/iio/kfifo_buf.c:56:8: error: type defaults to 'int' in
> declaration of 'IIO_BUFFER_LENGTH_ATTR' [-Werror=implicit-int]
> static IIO_BUFFER_LENGTH_ATTR;
> ^
> drivers/iio/kfifo_buf.c:59:3: error: 'dev_attr_length' undeclared here
> (not in a function)
> &dev_attr_length.attr,
> ^
> drivers/iio/kfifo_buf.c:60:3: error: 'dev_attr_enable' undeclared here
> (not in a function)
> &dev_attr_enable.attr,
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_get_bytes_per_datum_kfifo':
> drivers/iio/kfifo_buf.c:71:10: error: dereferencing pointer to incomplete type
> return r->bytes_per_datum;
> ^
> drivers/iio/kfifo_buf.c:71:10: error: request for member
> 'bytes_per_datum' in something not a structure or union
> drivers/iio/kfifo_buf.c:71:2: warning: return makes integer from
> pointer without a cast [enabled by default]
> return r->bytes_per_datum;
> ^
> In file included from /home/jim/linux/arch/x86/include/asm/percpu.h:44:0,
> from /home/jim/linux/arch/x86/include/asm/preempt.h:5,
> from include/linux/preempt.h:18,
> from include/linux/spinlock.h:50,
> from include/linux/mmzone.h:7,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> drivers/iio/kfifo_buf.c: In function 'iio_mark_update_needed_kfifo':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:76:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for 'kf')
> [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:76:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:834:27: error: invalid operands to binary -
> (have 'char *' and 'struct attribute **')
> (type *)( (char *)__mptr - offsetof(type,member) );})
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:76:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_set_bytes_per_datum_kfifo':
> drivers/iio/kfifo_buf.c:83:7: error: dereferencing pointer to incomplete type
> if (r->bytes_per_datum != bpd) {
> ^
> drivers/iio/kfifo_buf.c:83:7: error: request for member
> 'bytes_per_datum' in something not a structure or union
> drivers/iio/kfifo_buf.c:83:25: warning: comparison between pointer and
> integer [enabled by default]
> if (r->bytes_per_datum != bpd) {
> ^
> drivers/iio/kfifo_buf.c:84:4: error: dereferencing pointer to incomplete type
> r->bytes_per_datum = bpd;
> ^
> drivers/iio/kfifo_buf.c:84:4: error: request for member
> 'bytes_per_datum' in something not a structure or union
> drivers/iio/kfifo_buf.c:84:3: warning: statement with no effect [-Wunused-value]
> r->bytes_per_datum = bpd;
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_set_length_kfifo':
> drivers/iio/kfifo_buf.c:95:7: error: dereferencing pointer to incomplete type
> if (r->length != length) {
> ^
> drivers/iio/kfifo_buf.c:95:7: error: request for member 'length' in
> something not a structure or union
> drivers/iio/kfifo_buf.c:95:16: warning: comparison between pointer and
> integer [enabled by default]
> if (r->length != length) {
> ^
> drivers/iio/kfifo_buf.c:96:4: error: dereferencing pointer to incomplete type
> r->length = length;
> ^
> drivers/iio/kfifo_buf.c:96:4: error: request for member 'length' in
> something not a structure or union
> drivers/iio/kfifo_buf.c:96:3: warning: statement with no effect [-Wunused-value]
> r->length = length;
> ^
> In file included from /home/jim/linux/arch/x86/include/asm/percpu.h:44:0,
> from /home/jim/linux/arch/x86/include/asm/preempt.h:5,
> from include/linux/preempt.h:18,
> from include/linux/spinlock.h:50,
> from include/linux/mmzone.h:7,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> drivers/iio/kfifo_buf.c: In function 'iio_store_to_kfifo':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:106:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for 'kf')
> [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:106:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:834:27: error: invalid operands to binary -
> (have 'char *' and 'struct attribute **')
> (type *)( (char *)__mptr - offsetof(type,member) );})
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:106:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> In file included from include/linux/mmzone.h:9:0,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> drivers/iio/kfifo_buf.c:111:31: error: dereferencing pointer to incomplete type
> wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
> ^
> include/linux/wait.h:178:12: note: in definition of macro
> 'wake_up_interruptible_poll'
> __wake_up(x, TASK_INTERRUPTIBLE, 1, (void *) (m))
> ^
> drivers/iio/kfifo_buf.c:111:31: error: request for member 'pollq' in
> something not a structure or union
> wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
> ^
> include/linux/wait.h:178:12: note: in definition of macro
> 'wake_up_interruptible_poll'
> __wake_up(x, TASK_INTERRUPTIBLE, 1, (void *) (m))
> ^
> drivers/iio/kfifo_buf.c:111:2: warning: passing argument 1 of
> '__wake_up' from incompatible pointer type [enabled by default]
> wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
> ^
> In file included from include/linux/mmzone.h:9:0,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> include/linux/wait.h:144:6: note: expected 'struct wait_queue_head_t
> *' but argument is of type 'struct attribute * (*)[1]'
> void __wake_up(wait_queue_head_t *q, unsigned int mode, int nr, void *key);
> ^
> In file included from /home/jim/linux/arch/x86/include/asm/percpu.h:44:0,
> from /home/jim/linux/arch/x86/include/asm/preempt.h:5,
> from include/linux/preempt.h:18,
> from include/linux/spinlock.h:50,
> from include/linux/mmzone.h:7,
> from include/linux/gfp.h:5,
> from include/linux/slab.h:14,
> from drivers/iio/kfifo_buf.c:1:
> drivers/iio/kfifo_buf.c: In function 'iio_read_first_n_kfifo':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:120:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for 'kf')
> [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:120:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:834:27: error: invalid operands to binary -
> (have 'char *' and 'struct attribute **')
> (type *)( (char *)__mptr - offsetof(type,member) );})
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:120:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_kfifo_buf_data_available':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:138:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for 'kf')
> [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:138:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> include/linux/kernel.h:834:27: error: invalid operands to binary -
> (have 'char *' and 'struct attribute **')
> (type *)( (char *)__mptr - offsetof(type,member) );})
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:138:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_kfifo_buffer_release':
> include/linux/kernel.h:833:48: warning: initialization from
> incompatible pointer type [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:150:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(buffer);
> ^
> include/linux/kernel.h:833:48: warning: (near initialization for 'kf')
> [enabled by default]
> const typeof( ((type *)0)->member ) *__mptr = (ptr); \
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:150:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(buffer);
> ^
> include/linux/kernel.h:834:27: error: invalid operands to binary -
> (have 'char *' and 'struct attribute **')
> (type *)( (char *)__mptr - offsetof(type,member) );})
> ^
> drivers/iio/kfifo_buf.c:19:25: note: in expansion of macro 'container_of'
> #define iio_to_kfifo(r) container_of(r, struct iio_kfifo, buffer)
> ^
> drivers/iio/kfifo_buf.c:150:25: note: in expansion of macro 'iio_to_kfifo'
> struct iio_kfifo *kf = iio_to_kfifo(buffer);
> ^
> drivers/iio/kfifo_buf.c: At top level:
> drivers/iio/kfifo_buf.c:157:21: error: variable 'kfifo_access_funcs'
> has initializer but incomplete type
> static const struct iio_buffer_access_funcs kfifo_access_funcs = {
> ^
> drivers/iio/kfifo_buf.c:158:2: error: unknown field 'store_to'
> specified in initializer
> .store_to = &iio_store_to_kfifo,
> ^
> drivers/iio/kfifo_buf.c:158:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:158:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:159:2: error: unknown field 'read_first_n'
> specified in initializer
> .read_first_n = &iio_read_first_n_kfifo,
> ^
> drivers/iio/kfifo_buf.c:159:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:159:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:160:2: error: unknown field 'data_available'
> specified in initializer
> .data_available = iio_kfifo_buf_data_available,
> ^
> drivers/iio/kfifo_buf.c:160:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:160:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:161:2: error: unknown field 'request_update'
> specified in initializer
> .request_update = &iio_request_update_kfifo,
> ^
> drivers/iio/kfifo_buf.c:161:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:161:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:162:2: error: unknown field
> 'get_bytes_per_datum' specified in initializer
> .get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo,
> ^
> drivers/iio/kfifo_buf.c:162:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:162:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:163:2: error: unknown field
> 'set_bytes_per_datum' specified in initializer
> .set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
> ^
> drivers/iio/kfifo_buf.c:163:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:163:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:164:2: error: unknown field 'get_length'
> specified in initializer
> .get_length = &iio_get_length_kfifo,
> ^
> drivers/iio/kfifo_buf.c:164:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:164:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:165:2: error: unknown field 'set_length'
> specified in initializer
> .set_length = &iio_set_length_kfifo,
> ^
> drivers/iio/kfifo_buf.c:165:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:165:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c:166:2: error: unknown field 'release'
> specified in initializer
> .release = &iio_kfifo_buffer_release,
> ^
> drivers/iio/kfifo_buf.c:166:2: warning: excess elements in struct
> initializer [enabled by default]
> drivers/iio/kfifo_buf.c:166:2: warning: (near initialization for
> 'kfifo_access_funcs') [enabled by default]
> drivers/iio/kfifo_buf.c: In function 'iio_kfifo_allocate':
> drivers/iio/kfifo_buf.c:177:2: error: implicit declaration of function
> 'iio_buffer_init' [-Werror=implicit-function-declaration]
> iio_buffer_init(&kf->buffer);
> ^
> drivers/iio/kfifo_buf.c:178:12: error: request for member 'attrs' in
> something not a structure or union
> kf->buffer.attrs = &iio_kfifo_attribute_group;
> ^
> drivers/iio/kfifo_buf.c:178:2: warning: statement with no effect
> [-Wunused-value]
> kf->buffer.attrs = &iio_kfifo_attribute_group;
> ^
> drivers/iio/kfifo_buf.c:179:12: error: request for member 'access' in
> something not a structure or union
> kf->buffer.access = &kfifo_access_funcs;
> ^
> drivers/iio/kfifo_buf.c:179:2: warning: statement with no effect
> [-Wunused-value]
> kf->buffer.access = &kfifo_access_funcs;
> ^
> drivers/iio/kfifo_buf.c:180:12: error: request for member 'length' in
> something not a structure or union
> kf->buffer.length = 2;
> ^
> drivers/iio/kfifo_buf.c:180:2: warning: statement with no effect
> [-Wunused-value]
> kf->buffer.length = 2;
> ^
> drivers/iio/kfifo_buf.c:182:2: warning: return from incompatible
> pointer type [enabled by default]
> return &kf->buffer;
> ^
> drivers/iio/kfifo_buf.c: At top level:
> LD sound/soc/codecs/snd-soc-wm8782.o
> drivers/iio/kfifo_buf.c:55:8: warning: 'IIO_BUFFER_ENABLE_ATTR'
> defined but not used [-Wunused-variable]
> static IIO_BUFFER_ENABLE_ATTR;
> ^
> drivers/iio/kfifo_buf.c:56:8: warning: 'IIO_BUFFER_LENGTH_ATTR'
> defined but not used [-Wunused-variable]
> static IIO_BUFFER_LENGTH_ATTR;
> ^
> cc1: some warnings being treated as errors
> make[2]: *** [drivers/iio/kfifo_buf.o] Error 1\
>
Fixed by iio:ti_am335x_adc ensure that IIO_KFIFO_BUF is not selected witout IIO_BUFFER
09f33c332018be05cdaebf14a75ea232810948d0
Thanks
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