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| author | Jon Hunter <jonathanh@nvidia.com> | 2015-05-05 17:17:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-10 20:12:19 +0300 |
| commit | ad909b3f8b162a61ce9e32726dadb380e51f8949 (patch) | |
| tree | 4451c62fde6d0ca954d6d329fbe63468fc55abeb /net | |
| parent | d92aca3a76662d2da8fe843ab124c45b47ea127d (diff) | |
| download | linux-ad909b3f8b162a61ce9e32726dadb380e51f8949.tar.xz | |
serial: tegra: Correct error handling on DMA setup
Function tegra_uart_dma_channel_allocate() does not check that
dma_map_single() mapped the DMA buffer correctly. Add a check for this
and appropriate error handling.
Furthermore, if dmaengine_slave_config() (called by
tegra_uart_dma_channel_allocate()) fails, then memory allocated/mapped
is not freed/unmapped. Therefore, call tegra_uart_dma_channel_free()
instead of just dma_release_channel() if dmaengine_slave_config() fails.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions