- 03 Dec, 2013 40 commits
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Lars-Peter Clausen authored
Currently the IIO buffer interface only allows non-blocking reads. This patch adds support for blocking IO. In blocking mode the thread will go to sleep if no data is available and will wait for the buffer implementation to signal that new data is available by waking up the buffers waitqueue. Signed-off-by:
Lars-Peter Clausen <lars@metafoo.de> Signed-off-by:
Jonathan Cameron <jic23@kernel.org>
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Lars-Peter Clausen authored
This patch implements the data_available() callback for the kfifo buffer instead of using the stufftoread flag. The kfifo used by the buffer already knows whether it is empty or not based on the position of its read and write pointer. Using this makes it a lot easier to tell whether data is available or not and it is not necessary to take special measures to ensure that no race conditions between reading and writing from the buffer occur. Note, that we still have to take the buffers lock to protect against concurrent resizeing of the kfifo. Signed-off-by:
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Lars-Peter Clausen authored
This patch adds a new data_available() callback to the iio_buffer_access_funcs struct. The callback is used to indicate whether data is available in the buffer for reading. It is meant to replace the stufftoread flag from the iio_buffer struct. The reasoning for this is that the buffer implementation usually can determine whether data is available rather easily based on its state, on the other hand it can be rather tricky to update the stufftoread flag in a race free way. Signed-off-by:
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Lars-Peter Clausen authored
Some I2C controllers might not be able to handle transfer buffers that are stored on stack. Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 drivers/staging/iio/cdc/ad7746.c:599:25: warning: cast to restricted __be32 Signed-off-by:
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Lars-Peter Clausen authored
Some I2C controllers may not be able to handle transfer buffers that are placed on the stack. Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/staging/iio/adc/ad7280a.c:194:35: warning: incorrect type in initializer (different base types) drivers/staging/iio/adc/ad7280a.c:194:35: expected unsigned int [unsigned] tx_buf drivers/staging/iio/adc/ad7280a.c:194:35: got restricted __be32 [usertype] <noident> drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:207:16: warning: cast to restricted __be32 drivers/staging/iio/adc/ad7280a.c:219:13: warning: incorrect type in assignment (different base types) drivers/staging/iio/adc/ad7280a.c:219:13: expected unsigned int [unsigned] [assigned] reg drivers/staging/iio/adc/ad7280a.c:219:13: got restricted __be32 [usertype] <noident> Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16 drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16 drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16 drivers/iio/light/vcnl4000.c:88:16: warning: cast to restricted __be16 Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16 drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16 drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16 drivers/iio/adc/ad7266.c:140:16: warning: cast to restricted __be16 Signed-off-by:
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Lars-Peter Clausen authored
Some SPI controllers may not be able to handle transfer buffers that are placed on the stack. Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/dac/ad5791.c:114:18: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5791.c:114:18: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5791.c:114:18: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5791.c:142:21: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5791.c:142:21: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5791.c:142:21: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5791.c:144:21: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5791.c:144:21: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5791.c:144:21: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 drivers/iio/dac/ad5791.c:148:16: warning: cast to restricted __be32 Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/dac/ad5755.c:117:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5755.c:117:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5755.c:117:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5755.c:171:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5755.c:171:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5755.c:171:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5755.c:172:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5755.c:172:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5755.c:172:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 drivers/iio/dac/ad5755.c:176:23: warning: cast to restricted __be32 Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/dac/ad5686.c:100:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5686.c:100:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5686.c:100:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5686.c:122:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5686.c:122:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5686.c:122:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5686.c:124:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5686.c:124:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5686.c:124:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 drivers/iio/dac/ad5686.c:130:16: warning: cast to restricted __be32 Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/dac/ad5421.c:134:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5421.c:134:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5421.c:134:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5421.c:168:25: warning: incorrect type in assignment (different base types) drivers/iio/dac/ad5421.c:168:25: expected unsigned int [unsigned] [usertype] d32 drivers/iio/dac/ad5421.c:168:25: got restricted __be32 [usertype] <noident> drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 drivers/iio/dac/ad5421.c:172:23: warning: cast to restricted __be32 Signed-off-by:
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Lars-Peter Clausen authored
Some SPI controllers may not be able to handle transfer buffers that are placed on the stack. Signed-off-by:
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Lars-Peter Clausen authored
Fixes the following warnings from sparse: drivers/iio/dac/ad5504.c:71:19: warning: incorrect type in initializer (different base types) drivers/iio/dac/ad5504.c:71:19: expected unsigned short [unsigned] [usertype] tmp drivers/iio/dac/ad5504.c:71:19: got restricted __be16 [usertype] <noident> drivers/iio/dac/ad5504.c:80:19: warning: incorrect type in initializer (different base types) drivers/iio/dac/ad5504.c:80:19: expected unsigned short [unsigned] [usertype] tmp drivers/iio/dac/ad5504.c:80:19: got restricted __be16 [usertype] <noident> drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16 drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16 drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16 drivers/iio/dac/ad5504.c:93:16: warning: cast to restricted __be16 Signed-off-by:
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Jingoo Han authored
Don't use DEFINE_PCI_DEVICE_TABLE macro, because this macro is not preferred. Signed-off-by:
Jingoo Han <jg1.han@samsung.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Martyn Welch authored
Traditionally the "get" functions increment the reference count of the object that is returned, which does not happen with vme_slot_get. The function vme_slot_get returns the physical VME slot associated with a particular struct vme_dev. Rename vme_slot_num to avoid any confusion. Signed-off-by:
Martyn Welch <martyn.welch@ge.com> Signed-off-by:
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Martyn Welch authored
The match function for vme_user is completely wrong. It will blindly bind against the first VME slot on each bus (at this point that would be just the first bus as the driver can only handle one bus). The original intention (before some major subsystem changes) was that the driver bind against the slot to which the bridge was attached in the VME system and to the bus(es) provided via the "bus" module parameter. To do this cleanly (i.e. without poking arround in the subsystems internal stuctures) a functionality has been added to provide access to the bus enumeration. Signed-off-by:
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Wei Yongjun authored
Fixes the following sparse warning: drivers/staging/dwc2/core.c:2672:6: warning: symbol 'dwc2_set_param_uframe_sched' was not declared. Should it be static? Signed-off-by:
Wei Yongjun <yongjun_wei@trendmicro.com.cn> Signed-off-by:
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H Hartley Sweeten authored
This blank line printk is not necessary. Remove it. Signed-off-by:
H Hartley Sweeten <hsweeten@visionengravers.com> Reviewed-by:
Ian Abbott <abbotti@mev.co.uk> Signed-off-by:
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H Hartley Sweeten authored
Tidy up the code that does the request_irq(). Only hookup the commad support if the irq was sucessfully requested. Signed-off-by:
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H Hartley Sweeten authored
These printk messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
Convert this printk messages to a dev_dbg(). Signed-off-by:
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H Hartley Sweeten authored
This printk message is just added noise. Remove it. Signed-off-by:
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H Hartley Sweeten authored
Convert the printk messages in this function to dev_{level} mesages. Remove the ones that are just added noise. Signed-off-by: -
H Hartley Sweeten authored
Tidy up the code that does the request_irq(). Signed-off-by:
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H Hartley Sweeten authored
Convert the printk messages in this function to dev_{level} mesages. Remove the ones that are just added noise. Signed-off-by: -
H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
Tidy up the code that does the request_irq(). Signed-off-by:
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H Hartley Sweeten authored
The support code for this command flag is commented out. Just remove it. Signed-off-by:
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H Hartley Sweeten authored
This macro is commented out, thankfully... Remove it. Signed-off-by:
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H Hartley Sweeten authored
Convert the remaining printk messsages in this driver to dev_{level}. Signed-off-by: -
H Hartley Sweeten authored
Tidy up the code that does the request_irq(). Signed-off-by:
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H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
The timeouts will return -ETIMEDOUT. The printks are just added noise. Remove them. Signed-off-by:
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H Hartley Sweeten authored
These messages are just added noise. Remove them. Signed-off-by:
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