diff options
author | Erwan Le Ray <erwan.leray@st.com> | 2019-05-21 17:45:46 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-05-24 09:58:29 +0200 |
commit | 5297f274e8b61ceb9676cba6649d3de9d03387ad (patch) | |
tree | 31930f6aef573332cbe85e5c4c5837f73f3078d7 /drivers/tty/serial/stm32-usart.c | |
parent | serial: stm32: Add support of TC bit status check (diff) | |
download | linux-5297f274e8b61ceb9676cba6649d3de9d03387ad.tar.xz linux-5297f274e8b61ceb9676cba6649d3de9d03387ad.zip |
serial: stm32: fix wakeup source initialization
Fixes dedicated_irq_wakeup issue and deactivated uart as wakeup source by
default.
Fixes: 270e5a74fe4c ("serial: stm32: add wakeup mechanism")
Signed-off-by: Erwan Le Ray <erwan.leray@st.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/stm32-usart.c')
-rw-r--r-- | drivers/tty/serial/stm32-usart.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index d603be9669a9..1334e4293977 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -557,7 +557,6 @@ static int stm32_startup(struct uart_port *port) { struct stm32_port *stm32_port = to_stm32_port(port); struct stm32_usart_offsets *ofs = &stm32_port->info->ofs; - struct stm32_usart_config *cfg = &stm32_port->info->cfg; const char *name = to_platform_device(port->dev)->name; u32 val; int ret; @@ -568,15 +567,6 @@ static int stm32_startup(struct uart_port *port) if (ret) return ret; - if (cfg->has_wakeup && stm32_port->wakeirq >= 0) { - ret = dev_pm_set_dedicated_wake_irq(port->dev, - stm32_port->wakeirq); - if (ret) { - free_irq(port->irq, port); - return ret; - } - } - val = USART_CR1_RXNEIE | USART_CR1_TE | USART_CR1_RE; if (stm32_port->fifoen) val |= USART_CR1_FIFOEN; @@ -607,7 +597,6 @@ static void stm32_shutdown(struct uart_port *port) stm32_clr_bits(port, ofs->cr1, val); - dev_pm_clear_wake_irq(port->dev); free_irq(port->irq, port); } @@ -1079,11 +1068,18 @@ static int stm32_serial_probe(struct platform_device *pdev) ret = device_init_wakeup(&pdev->dev, true); if (ret) goto err_uninit; + + ret = dev_pm_set_dedicated_wake_irq(&pdev->dev, + stm32port->wakeirq); + if (ret) + goto err_nowup; + + device_set_wakeup_enable(&pdev->dev, false); } ret = uart_add_one_port(&stm32_usart_driver, &stm32port->port); if (ret) - goto err_nowup; + goto err_wirq; ret = stm32_of_dma_rx_probe(stm32port, pdev); if (ret) @@ -1097,6 +1093,10 @@ static int stm32_serial_probe(struct platform_device *pdev) return 0; +err_wirq: + if (stm32port->info->cfg.has_wakeup && stm32port->wakeirq >= 0) + dev_pm_clear_wake_irq(&pdev->dev); + err_nowup: if (stm32port->info->cfg.has_wakeup && stm32port->wakeirq >= 0) device_init_wakeup(&pdev->dev, false); @@ -1134,8 +1134,10 @@ static int stm32_serial_remove(struct platform_device *pdev) TX_BUF_L, stm32_port->tx_buf, stm32_port->tx_dma_buf); - if (cfg->has_wakeup && stm32_port->wakeirq >= 0) + if (cfg->has_wakeup && stm32_port->wakeirq >= 0) { + dev_pm_clear_wake_irq(&pdev->dev); device_init_wakeup(&pdev->dev, false); + } clk_disable_unprepare(stm32_port->clk); |