From: Frederic Danis <frederic.danis@linux.intel.com>
To: linux-serial@vger.kernel.org
Cc: linux-bluetooth@vger.kernel.org
Subject: [PATCH] Revert "serial: 8250_dma: don't bother DMA with small transfers"
Date: Wed, 30 Sep 2015 14:46:31 +0200 [thread overview]
Message-ID: <1443617191-21013-1-git-send-email-frederic.danis@linux.intel.com> (raw)
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@linux.intel.com>
---
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 21d01a4..e508939 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -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,
--
1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Frederic Danis <frederic.danis-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: linux-bluetooth-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH] Revert "serial: 8250_dma: don't bother DMA with small transfers"
Date: Wed, 30 Sep 2015 14:46:31 +0200 [thread overview]
Message-ID: <1443617191-21013-1-git-send-email-frederic.danis@linux.intel.com> (raw)
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-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
---
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 21d01a4..e508939 100644
--- a/drivers/tty/serial/8250/8250_dma.c
+++ b/drivers/tty/serial/8250/8250_dma.c
@@ -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,
--
1.9.1
next reply other threads:[~2015-09-30 12:46 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 12:46 Frederic Danis [this message]
2015-09-30 12:46 ` [PATCH] Revert "serial: 8250_dma: don't bother DMA with small transfers" Frederic Danis
2015-09-30 13:52 ` Peter Hurley
2015-09-30 13:52 ` Peter Hurley
2015-09-30 14:12 ` Andy Shevchenko
2015-09-30 14:12 ` Andy Shevchenko
2015-09-30 20:11 ` Peter Hurley
2015-09-30 20:11 ` Peter Hurley
2015-10-01 8:55 ` Andy Shevchenko
2015-10-01 8:55 ` Andy Shevchenko
2015-10-01 10:44 ` Marcel Holtmann
2015-10-01 10:44 ` Marcel Holtmann
2015-10-06 9:17 ` Frederic Danis
2015-10-06 9:17 ` Frederic Danis
2015-10-06 9:34 ` Greg KH
2015-10-06 9:34 ` Greg KH
2015-10-06 9:48 ` Frederic Danis
2015-10-06 9:48 ` Frederic Danis
2015-10-06 10:22 ` Greg KH
2015-10-06 10:22 ` Greg KH
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