5.15-stable review patch. If anyone has any objections, please let me know.
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From: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com
commit 239f11209e5f282e16f5241b99256e25dd0614b6 upstream.
Relocate the runtime PM enable operation to sci_probe_single(). This change prepares the codebase for upcoming fixes.
While at it, replace the existing logic with a direct call to devm_pm_runtime_enable() and remove sci_cleanup_single(). The devm_pm_runtime_enable() function automatically handles disabling runtime PM during driver removal.
Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com Link: https://lore.kernel.org/r/20250116182249.3828577-3-claudiu.beznea.uj@bp.rene... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Claudiu Beznea claudiu.beznea.uj@bp.renesas.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/tty/serial/sh-sci.c | 24 ++++++------------------ 1 file changed, 6 insertions(+), 18 deletions(-)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c index a276efa103192..a24fcd702f6cd 100644 --- a/drivers/tty/serial/sh-sci.c +++ b/drivers/tty/serial/sh-sci.c @@ -2993,10 +2993,6 @@ static int sci_init_single(struct platform_device *dev, ret = sci_init_clocks(sci_port, &dev->dev); if (ret < 0) return ret; - - port->dev = &dev->dev; - - pm_runtime_enable(&dev->dev); }
port->type = p->type; @@ -3026,11 +3022,6 @@ static int sci_init_single(struct platform_device *dev, return 0; }
-static void sci_cleanup_single(struct sci_port *port) -{ - pm_runtime_disable(port->port.dev); -} - #if defined(CONFIG_SERIAL_SH_SCI_CONSOLE) || \ defined(CONFIG_SERIAL_SH_SCI_EARLYCON) static void serial_console_putchar(struct uart_port *port, int ch) @@ -3188,8 +3179,6 @@ static int sci_remove(struct platform_device *dev) sci_ports_in_use &= ~BIT(port->port.line); uart_remove_one_port(&sci_uart_driver, &port->port);
- sci_cleanup_single(port); - if (port->port.fifosize > 1) device_remove_file(&dev->dev, &dev_attr_rx_fifo_trigger); if (type == PORT_SCIFA || type == PORT_SCIFB || type == PORT_HSCIF) @@ -3324,6 +3313,11 @@ static int sci_probe_single(struct platform_device *dev, if (ret) return ret;
+ sciport->port.dev = &dev->dev; + ret = devm_pm_runtime_enable(&dev->dev); + if (ret) + return ret; + sciport->gpios = mctrl_gpio_init(&sciport->port, 0); if (IS_ERR(sciport->gpios)) return PTR_ERR(sciport->gpios); @@ -3337,13 +3331,7 @@ static int sci_probe_single(struct platform_device *dev, sciport->port.flags |= UPF_HARD_FLOW; }
- ret = uart_add_one_port(&sci_uart_driver, &sciport->port); - if (ret) { - sci_cleanup_single(sciport); - return ret; - } - - return 0; + return uart_add_one_port(&sci_uart_driver, &sciport->port); }
static int sci_probe(struct platform_device *dev)