clock source is prepared and enabled by clk_prepare_enable()
in probe function, but no disable or unprepare in remove.
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>

Many drivers that use bitbang library have a leak on probe error paths.
This is because once a spi_master_get() call succeeds, we need an additional
spi_master_put() call to free the memory.

Fix this issue by moving the code taking a reference to master to
spi_bitbang_start(), so spi_bitbang_start() will take a reference to master on
success. With this change, the caller is responsible for calling
spi_bitbang_stop() to decrement the reference and spi_master_put() as
counterpart of spi_alloc_master() to prevent a memory leak.

So now we have below patten for drivers using bitbang library:

probe:
spi_alloc_master        -> Init reference count to 1
spi_bitbang_start       -> Increment reference count
remove:
spi_bitbang_stop        -> Decrement reference count
spi_master_put          -> Decrement reference count (reference count reaches 0)

Fixup all users accordingly.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Suggested-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Acked-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

Many drivers that use bitbang library have a leak on probe error paths.
This is because once a spi_master_get() call succeeds, we need an additional
spi_master_put() call to free the memory.

Fix this issue by moving the code taking a reference to master to
spi_bitbang_start(), so spi_bitbang_start() will take a reference to master on
success. With this change, the caller is responsible for calling
spi_bitbang_stop() to decrement the reference and spi_master_put() as
counterpart of spi_alloc_master() to prevent a memory leak.

So now we have below patten for drivers using bitbang library:

probe:
spi_alloc_master        -> Init reference count to 1
spi_bitbang_start       -> Increment reference count
remove:
spi_bitbang_stop        -> Decrement reference count
spi_master_put          -> Decrement reference count (reference count reaches 0)

Fixup all users accordingly.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Suggested-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Acked-by: Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

 - improve dependencies using COMPILE_TEST
 - fix a typo
 - drop platform_set_drvdata(pdev, NULL) in error path of probe
 - make MODULE_LICENSE match the header
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

Added missing __iomem annotation in order to fix the following
sparse warnings:

drivers/spi/spi-fsl-dspi.c:140:16: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:140:16:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:140:16:    got void *
drivers/spi/spi-fsl-dspi.c:143:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:143:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:143:9:    got void *
drivers/spi/spi-fsl-dspi.c:132:18: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:132:18:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:132:18:    got void *
drivers/spi/spi-fsl-dspi.c:241:17: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:241:17:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:241:17:    got void *
drivers/spi/spi-fsl-dspi.c:132:18: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:132:18:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:132:18:    got void *
drivers/spi/spi-fsl-dspi.c:259:29: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:259:29:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:259:29:    got void *
drivers/spi/spi-fsl-dspi.c:266:29: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:266:29:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:266:29:    got void *
drivers/spi/spi-fsl-dspi.c:298:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:298:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:298:9:    got void *
drivers/spi/spi-fsl-dspi.c:299:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:299:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:299:9:    got void *
drivers/spi/spi-fsl-dspi.c:300:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:300:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:300:9:    got void *
drivers/spi/spi-fsl-dspi.c:303:17: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:303:17:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:303:17:    got void *
drivers/spi/spi-fsl-dspi.c:318:21: warning: incorrect type in argument 1 (different address spaces)
drivers/spi/spi-fsl-dspi.c:318:21:    expected void const volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:318:21:    got void *
drivers/spi/spi-fsl-dspi.c:327:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:327:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:327:9:    got void *
drivers/spi/spi-fsl-dspi.c:386:9: warning: incorrect type in argument 2 (different address spaces)
drivers/spi/spi-fsl-dspi.c:386:9:    expected void volatile [noderef] <asn:2>*addr
drivers/spi/spi-fsl-dspi.c:386:9:    got void *
drivers/spi/spi-fsl-dspi.c:485:20: warning: incorrect type in assignment (different address spaces)
drivers/spi/spi-fsl-dspi.c:485:20:    expected void *base
drivers/spi/spi-fsl-dspi.c:485:20:    got void [noderef] <asn:2>*
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

In case of error, the function devm_ioremap_resource() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Mark Brown <broonie@linaro.org>

The serial peripheral interface (SPI) module implemented on Freescale Vybrid
platform provides a synchronous serial bus for communication between Vybrid
and the external peripheral device.
The SPI supports full-duplex, three-wire synchronous transfer, has TX/RX FIFO
with depth of four entries.

This driver is the SPI master mode driver and has been tested on Vybrid
VF610TWR board.
Signed-off-by: Alison Wang <b18965@freescale.com>
Signed-off-by: Chao Fu  <b44548@freescale.com>
Signed-off-by: Mark Brown <broonie@linaro.org>