This reverts commit 9119fba0cfeda6d415c9f068df66838a104b87cb.
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@xxxxxxxxxxxxxxx>
Fixes: 9119fba0cfed (serial: 8250_dma: don't bother DMA with small
transfers)
Cc: stable@xxxxxxxxxxxxxxx
---
v3: Add Fixes and Cc tags
v2: Re-send to correct people
drivers/tty/serial/8250/8250_dma.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_dma.c b/drivers/tty/serial/8250/8250_dma.c
index b503071..78259d3 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -77,10 +77,6 @@ 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,
--
1.9.1
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