diff options
Diffstat (limited to 'drivers/tty/ehv_bytechan.c')
| -rw-r--r-- | drivers/tty/ehv_bytechan.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/tty/ehv_bytechan.c b/drivers/tty/ehv_bytechan.c index 4ab936b7aac6..ed92622b8949 100644 --- a/drivers/tty/ehv_bytechan.c +++ b/drivers/tty/ehv_bytechan.c @@ -371,22 +371,17 @@ console_initcall(ehv_bc_console_init); static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data) { struct ehv_bc_data *bc = data; - struct tty_struct *ttys = tty_port_tty_get(&bc->port); unsigned int rx_count, tx_count, len; int count; char buffer[EV_BYTE_CHANNEL_MAX_BYTES]; int ret; - /* ttys could be NULL during a hangup */ - if (!ttys) - return IRQ_HANDLED; - /* Find out how much data needs to be read, and then ask the TTY layer * if it can handle that much. We want to ensure that every byte we * read from the byte channel will be accepted by the TTY layer. */ ev_byte_channel_poll(bc->handle, &rx_count, &tx_count); - count = tty_buffer_request_room(ttys, rx_count); + count = tty_buffer_request_room(&bc->port, rx_count); /* 'count' is the maximum amount of data the TTY layer can accept at * this time. However, during testing, I was never able to get 'count' @@ -407,7 +402,7 @@ static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data) */ /* Pass the received data to the tty layer. */ - ret = tty_insert_flip_string(ttys, buffer, len); + ret = tty_insert_flip_string(&bc->port, buffer, len); /* 'ret' is the number of bytes that the TTY layer accepted. * If it's not equal to 'len', then it means the buffer is @@ -422,9 +417,7 @@ static irqreturn_t ehv_bc_tty_rx_isr(int irq, void *data) } /* Tell the tty layer that we're done. */ - tty_flip_buffer_push(ttys); - - tty_kref_put(ttys); + tty_flip_buffer_push(&bc->port); return IRQ_HANDLED; } @@ -699,7 +692,7 @@ static const struct tty_port_operations ehv_bc_tty_port_ops = { .shutdown = ehv_bc_tty_port_shutdown, }; -static int __devinit ehv_bc_tty_probe(struct platform_device *pdev) +static int ehv_bc_tty_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; struct ehv_bc_data *bc; @@ -757,6 +750,7 @@ static int __devinit ehv_bc_tty_probe(struct platform_device *pdev) return 0; error: + tty_port_destroy(&bc->port); irq_dispose_mapping(bc->tx_irq); irq_dispose_mapping(bc->rx_irq); @@ -770,6 +764,7 @@ static int ehv_bc_tty_remove(struct platform_device *pdev) tty_unregister_device(ehv_bc_driver, bc - bcs); + tty_port_destroy(&bc->port); irq_dispose_mapping(bc->tx_irq); irq_dispose_mapping(bc->rx_irq); |