linux-toradex.git/drivers/spi/spi-oc-tiny.c, branch v4.1.16

spi: drop owner assignment from platform_drivers

2014-10-20T14:21:36+00:00

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang

Merge remote-tracking branches 'spi/topic/imx', 'spi/topic/init', 'spi/topic/mpc512x-psc', 'spi/topic/mpc52xx', 'spi/topic/mxs', 'spi/topic/nuc900', 'spi/topic/oc-tiny' and 'spi/topic/octeon' into spi-next

2014-03-30T00:51:17+00:00

spi: oc-tiny: Remove unneeded NULL checking for hw->bitbang.master

2014-03-13T09:54:16+00:00

We already has NULL test for master after calling spi_alloc_master().

Signed-off-by: Axel Lin 
Signed-off-by: Mark Brown

spi: delete non-required instances of include

2014-02-03T12:20:35+00:00

None of these files are actually using any __init type directives
and hence don't need to include .  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker 
Signed-off-by: Mark Brown

spi: oc-tiny: Simplify tiny_spi_txrx_bufs implementation when irq is not used

2014-01-09T17:58:28+00:00

Currently we have similar code for (txp && rxp), (txp && !rxp), (!rxp & txp),
and (!txp && !rxp) cases. This patch refactors the code a bit to avoid
duplicate similar code.

Signed-off-by: Axel Lin 
Signed-off-by: Mark Brown

spi: bitbang: Let spi_bitbang_start() take a reference to master

2013-09-17T11:56:14+00:00

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 
Suggested-by: Uwe Kleine-Koenig 
Acked-by: Uwe Kleine-Koenig 
Signed-off-by: Mark Brown

Merge remote-tracking branch 'spi/topic/pdata' into spi-next

2013-09-01T12:49:03+00:00

spi: use dev_get_platdata()

2013-08-29T12:56:23+00:00

Use the wrapper function for retrieving the platform data instead of
accessing dev->platform_data directly.

Signed-off-by: Jingoo Han 
Signed-off-by: Mark Brown

spi: simplify devm_request_mem_region/devm_ioremap

2013-08-29T12:39:35+00:00

Convert the composition of devm_request_mem_region and devm_ioremap to a
single call to devm_ioremap_resource.  The associated call to
platform_get_resource is also simplified and moved next to the new call to
devm_ioremap_resource.

This was done using a combination of the semantic patches
devm_ioremap_resource.cocci and devm_request_and_ioremap.cocci, found in
the scripts/coccinelle/api directory.

This patch also removes the label exit_busy, to use the error code returned
by the failing operation, rather than always -EBUSY.

Signed-off-by: Julia Lawall 
Signed-off-by: Mark Brown

spi: remove unnecessary platform_set_drvdata()

2013-05-13T14:00:30+00:00

The driver core clears the driver data to NULL after device_release
or on probe failure, since commit 0998d0631001288a5974afc0b2a5f568bcdecb4d
(device-core: Ensure drvdata = NULL when no driver is bound).
Thus, it is not needed to manually clear the device driver data to NULL.

Signed-off-by: Jingoo Han 
Acked-by: Grant Likely 
Signed-off-by: Mark Brown