Vignesh Raghavendra 32f2fc5dc3
spi: spi-omap2-mcspi: Support probe deferral for DMA channels
dma_request_channel() can return -EPROBE_DEFER, if DMA driver is not
ready. Currently driver just falls back to PIO mode on probe deferral.
Fix this by requesting all required channels during probe and
propagating EPROBE_DEFER error code.

Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Link: https://lore.kernel.org/r/20200204124816.16735-3-vigneshr@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2020-02-06 15:53:57 +00:00
2019-12-06 16:12:39 -08:00
2019-12-04 19:44:13 -08:00
2019-11-15 14:38:27 +01:00
2019-12-07 11:00:19 -08:00
2019-12-03 12:51:35 -08:00
2019-12-06 13:06:14 -08:00
2019-12-05 13:18:54 -08:00
2019-10-29 04:43:29 -06:00
2019-12-08 14:57:55 -08:00

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
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