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| author | Stephen Warren <swarren@nvidia.com> | 2012-09-28 10:15:48 -0600 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-10-01 13:29:49 +0100 |
| commit | 536a53a300d0d40152796eefb0a9e6e36ca37f7d (patch) | |
| tree | e644203945ee780d8a1a4cdc656d9b4984f5361d /drivers/spi/Kconfig | |
| parent | f4b81dd83e38277a3d1e6661f0fa8eea8cfe784b (diff) | |
| download | op-kernel-dev-536a53a300d0d40152796eefb0a9e6e36ca37f7d.zip op-kernel-dev-536a53a300d0d40152796eefb0a9e6e36ca37f7d.tar.gz | |
spi: remove completely broken Tegra driver
The current SPI driver has many issues. Examples are:
* Segfaulting on most transfers due to expecting all transfers to have
both RX and TX buffers.
* Hanging on TX transfers since the whole driver flow is driven by RX
DMA completion, but the HW is only told to enable RX for RX transfers.
* Use of clk_disable_unprepare() from atomic context.
* Once those and other minor issues are fixed, the driver still doesn't
actually work.
* The driver also implements a deprecated API to the SPI core.
For this reason, simply remove the driver completely. This has two
advantages:
1) This will remove the last use of Tegra's <mach/dma.h>, which will
allow that file to be removed, which is required for single zImage
work.
2) The downstream driver is significaly different from the current
code. I believe a patch to re-add the downstream driver (with
appropriate cleanup) will be much simpler to review if it's a new
file rather than randomly interspered with essentially unrelated
existing code.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 63a7943..ecc31a1 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -377,12 +377,6 @@ config SPI_MXS help SPI driver for Freescale MXS devices. -config SPI_TEGRA - tristate "Nvidia Tegra SPI controller" - depends on ARCH_TEGRA && (TEGRA_SYSTEM_DMA || TEGRA20_APB_DMA) - help - SPI driver for NVidia Tegra SoCs - config SPI_TI_SSP tristate "TI Sequencer Serial Port - SPI Support" depends on MFD_TI_SSP |
