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Clang warns when one enumerated type is converted implicitly to another:
drivers/spi/spi-pic32.c:323:8: warning: implicit conversion from
enumeration type 'enum dma_data_direction' to different enumeration type
'enum dma_transfer_direction' [-Wenum-conversion]
DMA_FROM_DEVICE,
^~~~~~~~~~~~~~~
drivers/spi/spi-pic32.c:333:8: warning: implicit conversion from
enumeration type 'enum dma_data_direction' to different enumeration type
'enum dma_transfer_direction' [-Wenum-conversion]
DMA_TO_DEVICE,
^~~~~~~~~~~~~
2 warnings generated.
Use the proper enums from dma_transfer_direction (DMA_FROM_DEVICE =
DMA_DEV_TO_MEM = 2, DMA_TO_DEVICE = DMA_MEM_TO_DEV = 1) to satify Clang.
Link: https://github.com/ClangBuiltLinux/linux/issues/159
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Almost all spi drivers assign spi master->dev.of_node from
its parent platform device without additional refcounting.
It seems of_node_get() in pic32_spi_probe() is unnecessary
and there is no corresponding of_node_put().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Mark Brown <broonie@kernel.org>
Trivial fix to spelling mistakes macros; fix EMPTY spellings:
RX_FIFO_EMTPY -> RX_FIFO_EMPTY
TX_FIFO_EMTPY -> TX_FIFO_EMPTY
Note that there are no other occurrances of these macros in the
source.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
wait_for_completion_timeout returns unsigned long not int so the check for
<= 0 should be == 0 here.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
devm_ioremap_resource() returns ERR_PTR on error.
Also remove the redundant dev_err message, the implementation of
devm_ioremap_resource() already print error messages on error paths.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This driver only supports 8/16/32 bits_per_word, so set
master->bits_per_word_mask accordingly. With this change, we can remove
the spi->bits_per_word checking in pic32_spi_setup as it's done by spi
core.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
The PIC32 SPI driver is capable of performing SPI transfers
using PIO or external DMA engine. GPIO controlled /CS support
is made default in the driver for correct operation of the
controller. This can be enabled by adding "cs-gpios" property
of the SPI node in board dts file.
Signed-off-by: Purna Chandra Mandal <purna.mandal@microchip.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
