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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-05-18 14:08:58 -0700 |
| commit | 02730d3c053a9af1d402e1c8dc8bbbc5a1340406 (patch) | |
| tree | db289a08de50eb4b5caf7840d5b7356ddfa1c51f /drivers/spi/spi.c | |
| parent | 77232f791e0605521a978cbe7f79a93df24df374 (diff) | |
| parent | e26081808edadfd257c6c9d81014e3b25e9a6118 (diff) | |
| download | lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.tar.gz lwn-02730d3c053a9af1d402e1c8dc8bbbc5a1340406.zip | |
Merge 4.1-rc4 into tty-next
This resolves some tty driver merge issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/spi/spi.c')
| -rw-r--r-- | drivers/spi/spi.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index d5d7d2235163..50910d85df5a 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -583,6 +583,15 @@ static int spi_unmap_msg(struct spi_master *master, struct spi_message *msg) rx_dev = master->dma_rx->device->dev; list_for_each_entry(xfer, &msg->transfers, transfer_list) { + /* + * Restore the original value of tx_buf or rx_buf if they are + * NULL. + */ + if (xfer->tx_buf == master->dummy_tx) + xfer->tx_buf = NULL; + if (xfer->rx_buf == master->dummy_rx) + xfer->rx_buf = NULL; + if (!master->can_dma(master, msg->spi, xfer)) continue; |