Revert "serial: 8250_dma: don't bother DMA with small transfers"
This reverts commit9119fba0cf
. This commit prevents from sending "big" file using Bluetooth. When sending a lot of data quickly through the Bluetooth interface, and after a variable amount of data sent, transfer fails with error: kernel: [ 415.247453] Bluetooth: hci0 hardware error 0x00 Found on T100TA. After reverting this commit, send works fine for any file size. Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com> Fixes:9119fba0cf
(serial: 8250_dma: don't bother DMA with small transfers) Cc: stable@vger.kernel.org Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
parent
25cb62b764
commit
f967fc8f16
|
@ -80,10 +80,6 @@ int serial8250_tx_dma(struct uart_8250_port *p)
|
|||
return 0;
|
||||
|
||||
dma->tx_size = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
|
||||
if (dma->tx_size < p->port.fifosize) {
|
||||
ret = -EINVAL;
|
||||
goto err;
|
||||
}
|
||||
|
||||
desc = dmaengine_prep_slave_single(dma->txchan,
|
||||
dma->tx_addr + xmit->tail,
|
||||
|
|
Loading…
Reference in a new issue