I think the faulty commit is this one c9190956 ("
staging:iio:dummy fix kfifo_buf kconfig dependency issue if kfifo modular
and buffer enabled for built in dummy driver"). It selects IIO_KFIFO_BUF
without also selecting IIO_BUFFER or depending on IIO_BUFFER.
- Lars
On 01/06/2014 06:58 PM, kbuild test robot wrote:
> tree: git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> head: 6fd92d3add999fbcc7178a07cbc6360f66a306ba
> commit: 355c1a14d4009a43e4d1f9cb42a382f0a94d01c4 [15/46] iio: kfifo_buf: Implement data_available() callback
> config: i386-randconfig-j2-01062117 (attached as .config)
>
> All error/warnings:
>
> return r->bytes_per_datum;
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_mark_update_needed_kfifo':
> drivers/iio/kfifo_buf.c:76:86: warning: initialization from incompatible pointer type [enabled by default]
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c:76:86: warning: (near initialization for 'kf') [enabled by default]
> drivers/iio/kfifo_buf.c:76:128: error: invalid operands to binary - (have 'char *' and 'struct attribute **')
> 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;
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_store_to_kfifo':
> drivers/iio/kfifo_buf.c:106:86: warning: initialization from incompatible pointer type [enabled by default]
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c:106:86: warning: (near initialization for 'kf') [enabled by default]
> drivers/iio/kfifo_buf.c:106:128: error: invalid operands to binary - (have 'char *' and 'struct attribute **')
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c:111:14: error: dereferencing pointer to incomplete type
> wake_up_interruptible_poll(&r->pollq, POLLIN | POLLRDNORM);
> ^
> drivers/iio/kfifo_buf.c:111:14: error: request for member 'pollq' in something not a structure or union
> 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:4,
> 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);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_read_first_n_kfifo':
> drivers/iio/kfifo_buf.c:120:86: warning: initialization from incompatible pointer type [enabled by default]
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c:120:86: warning: (near initialization for 'kf') [enabled by default]
> drivers/iio/kfifo_buf.c:120:128: error: invalid operands to binary - (have 'char *' and 'struct attribute **')
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_kfifo_buf_data_available':
> drivers/iio/kfifo_buf.c:138:86: warning: initialization from incompatible pointer type [enabled by default]
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c:138:86: warning: (near initialization for 'kf') [enabled by default]
> drivers/iio/kfifo_buf.c:138:128: error: invalid operands to binary - (have 'char *' and 'struct attribute **')
> struct iio_kfifo *kf = iio_to_kfifo(r);
> ^
> drivers/iio/kfifo_buf.c: In function 'iio_kfifo_buffer_release':
> drivers/iio/kfifo_buf.c:150:86: warning: initialization from incompatible pointer type [enabled by default]
> struct iio_kfifo *kf = iio_to_kfifo(buffer);
> ^
> drivers/iio/kfifo_buf.c:150:86: warning: (near initialization for 'kf') [enabled by default]
> drivers/iio/kfifo_buf.c:150:133: error: invalid operands to binary - (have 'char *' and 'struct attribute **')
> 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:
> 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
>
> vim +/data_available +160 drivers/iio/kfifo_buf.c
>
> 152 mutex_destroy(&kf->user_lock);
> 153 kfifo_free(&kf->kf);
> 154 kfree(kf);
> 155 }
> 156
> 157 static const struct iio_buffer_access_funcs kfifo_access_funcs = {
> > 158 .store_to = &iio_store_to_kfifo,
> 159 .read_first_n = &iio_read_first_n_kfifo,
> > 160 .data_available = iio_kfifo_buf_data_available,
> 161 .request_update = &iio_request_update_kfifo,
> 162 .get_bytes_per_datum = &iio_get_bytes_per_datum_kfifo,
> 163 .set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
>
> ---
> 0-DAY kernel build testing backend Open Source Technology Center
> http://lists.01.org/mailman/listinfo/kbuild Intel Corporation
>
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