diff options
Diffstat (limited to 'drivers/media/pci/mantis/mantis_uart.c')
| -rw-r--r-- | drivers/media/pci/mantis/mantis_uart.c | 31 |
1 files changed, 13 insertions, 18 deletions
diff --git a/drivers/media/pci/mantis/mantis_uart.c b/drivers/media/pci/mantis/mantis_uart.c index f1c96aec8c7b..42983a89e50b 100644 --- a/drivers/media/pci/mantis/mantis_uart.c +++ b/drivers/media/pci/mantis/mantis_uart.c @@ -1,21 +1,9 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* Mantis PCI bridge driver Copyright (C) Manu Abraham (abraham.manu@gmail.com) - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <linux/kernel.h> @@ -27,11 +15,11 @@ #include <linux/interrupt.h> #include <linux/pci.h> -#include "dmxdev.h" -#include "dvbdev.h" -#include "dvb_demux.h" -#include "dvb_frontend.h" -#include "dvb_net.h" +#include <media/dmxdev.h> +#include <media/dvbdev.h> +#include <media/dvb_demux.h> +#include <media/dvb_frontend.h> +#include <media/dvb_net.h> #include "mantis_common.h" #include "mantis_reg.h" @@ -92,6 +80,7 @@ static void mantis_uart_work(struct work_struct *work) { struct mantis_pci *mantis = container_of(work, struct mantis_pci, uart_work); u32 stat; + unsigned long timeout; stat = mmread(MANTIS_UART_STAT); @@ -102,9 +91,15 @@ static void mantis_uart_work(struct work_struct *work) * MANTIS_UART_RXFIFO_DATA is only set if at least * config->bytes + 1 bytes are in the FIFO. */ + + /* FIXME: is 10ms good enough ? */ + timeout = jiffies + msecs_to_jiffies(10); while (stat & MANTIS_UART_RXFIFO_DATA) { mantis_uart_read(mantis); stat = mmread(MANTIS_UART_STAT); + + if (!time_is_after_jiffies(timeout)) + break; } /* re-enable UART (RX) interrupt */ |