diff options
| author | Akash Asthana <akashast@codeaurora.org> | 2019-10-10 15:16:03 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-10 14:29:44 +0200 |
| commit | 3e4aaea7a0391d47f6ffff1f10594c658a67c881 (patch) | |
| tree | e81e2609584aed5325097d0e22564615f19cf45f /drivers/tty | |
| parent | 7726fb53e75fa48714181efd00167e0734303afb (diff) | |
| download | linux-3e4aaea7a0391d47f6ffff1f10594c658a67c881.tar.bz2 | |
tty: serial: qcom_geni_serial: IRQ cleanup
Move ISR registration from startup to probe function to avoid registering
it everytime when the port open is called for driver.
Signed-off-by: Akash Asthana <akashast@codeaurora.org>
Link: https://lore.kernel.org/r/1570700763-17319-1-git-send-email-akashast@codeaurora.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/qcom_geni_serial.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c index 14c6306bc462..5180cd835fdc 100644 --- a/drivers/tty/serial/qcom_geni_serial.c +++ b/drivers/tty/serial/qcom_geni_serial.c @@ -9,6 +9,7 @@ #include <linux/console.h> #include <linux/io.h> #include <linux/iopoll.h> +#include <linux/irq.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_device.h> @@ -830,7 +831,7 @@ static void qcom_geni_serial_shutdown(struct uart_port *uport) if (uart_console(uport)) console_stop(uport->cons); - free_irq(uport->irq, uport); + disable_irq(uport->irq); spin_lock_irqsave(&uport->lock, flags); qcom_geni_serial_stop_tx(uport); qcom_geni_serial_stop_rx(uport); @@ -890,21 +891,14 @@ static int qcom_geni_serial_startup(struct uart_port *uport) int ret; struct qcom_geni_serial_port *port = to_dev_port(uport, uport); - scnprintf(port->name, sizeof(port->name), - "qcom_serial_%s%d", - (uart_console(uport) ? "console" : "uart"), uport->line); - if (!port->setup) { ret = qcom_geni_serial_port_setup(uport); if (ret) return ret; } + enable_irq(uport->irq); - ret = request_irq(uport->irq, qcom_geni_serial_isr, IRQF_TRIGGER_HIGH, - port->name, uport); - if (ret) - dev_err(uport->dev, "Failed to get IRQ ret %d\n", ret); - return ret; + return 0; } static unsigned long get_clk_cfg(unsigned long clk_freq) @@ -1297,11 +1291,21 @@ static int qcom_geni_serial_probe(struct platform_device *pdev) port->rx_fifo_depth = DEF_FIFO_DEPTH_WORDS; port->tx_fifo_width = DEF_FIFO_WIDTH_BITS; + scnprintf(port->name, sizeof(port->name), "qcom_geni_serial_%s%d", + (uart_console(uport) ? "console" : "uart"), uport->line); irq = platform_get_irq(pdev, 0); if (irq < 0) return irq; uport->irq = irq; + irq_set_status_flags(uport->irq, IRQ_NOAUTOEN); + ret = devm_request_irq(uport->dev, uport->irq, qcom_geni_serial_isr, + IRQF_TRIGGER_HIGH, port->name, uport); + if (ret) { + dev_err(uport->dev, "Failed to get IRQ ret %d\n", ret); + return ret; + } + uport->private_data = drv; platform_set_drvdata(pdev, port); port->handle_rx = console ? handle_rx_console : handle_rx_uart; |