diff options
| author |   Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2017-01-19 12:45:42 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-01-19 12:50:27 +0100 |
| commit | 7c3eaadd0209fe21f331600ea2d904c3a0e9b287 (patch) | |
| tree | 4d3ef83783af3ed0a263a61808e04dcd713ab63e /drivers/staging/fbtft/fbtft-io.c | |
| parent | staging: fbtft: convert fbtft_reset() to be non-atomic (diff) | |
| download | linux-dev-7c3eaadd0209fe21f331600ea2d904c3a0e9b287.tar.xz linux-dev-7c3eaadd0209fe21f331600ea2d904c3a0e9b287.zip | |
staging: fbtft: remove custom DMA mapped buffer
There is no need to duplicate what SPI core already does, i.e. mapping buffers
for DMA capable transfers.
Remove all related pices of code.
Note, that code, besides its redundancy, was buggy: DMA address potentially can
be 0, SPI slave device has nothing to do with DMA capable device properties and
DMA mask in particular.
Suggested-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/fbtft/fbtft-io.c')
| -rw-r--r-- | drivers/staging/fbtft/fbtft-io.c | 4 |
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/staging/fbtft/fbtft-io.c b/drivers/staging/fbtft/fbtft-io.c index 4dcea2e0b3ae..d86840548b74 100644 --- a/drivers/staging/fbtft/fbtft-io.c +++ b/drivers/staging/fbtft/fbtft-io.c @@ -22,10 +22,6 @@ int fbtft_write_spi(struct fbtft_par *par, void *buf, size_t len) } spi_message_init(&m); - if (par->txbuf.dma && buf == par->txbuf.buf) { - t.tx_dma = par->txbuf.dma; - m.is_dma_mapped = 1; - } spi_message_add_tail(&t, &m); return spi_sync(par->spi, &m); } |