diff options
Diffstat (limited to 'drivers/tty/serial/pch_uart.c')
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 17 |
1 files changed, 7 insertions, 10 deletions
diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index 6157213a8359..0a96217dba67 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -2,9 +2,6 @@ /* *Copyright (C) 2011 LAPIS Semiconductor Co., Ltd. */ -#if defined(CONFIG_SERIAL_PCH_UART_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ) -#define SUPPORT_SYSRQ -#endif #include <linux/kernel.h> #include <linux/serial_reg.h> #include <linux/slab.h> @@ -233,6 +230,7 @@ struct eg20t_port { struct dma_chan *chan_rx; struct scatterlist *sg_tx_p; int nent; + int orig_nent; struct scatterlist sg_rx; int tx_dma_use; void *rx_buf_virt; @@ -586,12 +584,8 @@ static int pch_uart_hal_read(struct eg20t_port *priv, unsigned char *buf, if (uart_handle_break(port)) continue; } -#ifdef SUPPORT_SYSRQ - if (port->sysrq) { - if (uart_handle_sysrq_char(port, rbr)) - continue; - } -#endif + if (uart_handle_sysrq_char(port, rbr)) + continue; buf[i++] = rbr; } @@ -787,9 +781,10 @@ static void pch_dma_tx_complete(void *arg) } xmit->tail &= UART_XMIT_SIZE - 1; async_tx_ack(priv->desc_tx); - dma_unmap_sg(port->dev, sg, priv->nent, DMA_TO_DEVICE); + dma_unmap_sg(port->dev, sg, priv->orig_nent, DMA_TO_DEVICE); priv->tx_dma_use = 0; priv->nent = 0; + priv->orig_nent = 0; kfree(priv->sg_tx_p); pch_uart_hal_enable_interrupt(priv, PCH_UART_HAL_TX_INT); } @@ -1010,6 +1005,7 @@ static unsigned int dma_handle_tx(struct eg20t_port *priv) dev_err(priv->port.dev, "%s:dma_map_sg Failed\n", __func__); return 0; } + priv->orig_nent = num; priv->nent = nent; for (i = 0; i < nent; i++, sg++) { @@ -1793,6 +1789,7 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, priv->port.flags = UPF_BOOT_AUTOCONF; priv->port.fifosize = fifosize; priv->port.line = board->line_no; + priv->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_PCH_UART_CONSOLE); priv->trigger = PCH_UART_HAL_TRIGGER_M; snprintf(priv->irq_name, IRQ_NAME_SIZE, |
