From 3d6bcddf5490e86f2fb384329ce6bb8c36dc69a0 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Sun, 13 Aug 2017 17:47:39 +0300 Subject: serial: fsl_lpuart: Avoid using irq_wake flag There is no need to duplicate a flag which IRQ core takes care of. Replace custom flag by IRQ core API that retrieves its state. Cc: Bhuvanchandra DV Cc: Dong Aisheng Signed-off-by: Andy Shevchenko Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/fsl_lpuart.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) (limited to 'drivers/tty') diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index d24270fe3cbe..849c1f9991ce 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -2264,6 +2264,7 @@ static int lpuart_suspend(struct device *dev) { struct lpuart_port *sport = dev_get_drvdata(dev); unsigned long temp; + bool irq_wake; if (lpuart_is_32(sport)) { /* disable Rx/Tx and interrupts */ @@ -2279,6 +2280,9 @@ static int lpuart_suspend(struct device *dev) uart_suspend_port(&lpuart_reg, &sport->port); + /* uart_suspend_port() might set wakeup flag */ + irq_wake = irqd_is_wakeup_set(irq_get_irq_data(sport->port.irq)); + if (sport->lpuart_dma_rx_use) { /* * EDMA driver during suspend will forcefully release any @@ -2287,7 +2291,7 @@ static int lpuart_suspend(struct device *dev) * cannot resume as as expected, hence gracefully release the * Rx DMA path before suspend and start Rx DMA path on resume. */ - if (sport->port.irq_wake) { + if (irq_wake) { del_timer_sync(&sport->lpuart_timer); lpuart_dma_rx_free(&sport->port); } @@ -2302,7 +2306,7 @@ static int lpuart_suspend(struct device *dev) dmaengine_terminate_all(sport->dma_tx_chan); } - if (sport->port.suspended && !sport->port.irq_wake) + if (sport->port.suspended && !irq_wake) clk_disable_unprepare(sport->clk); return 0; @@ -2311,9 +2315,10 @@ static int lpuart_suspend(struct device *dev) static int lpuart_resume(struct device *dev) { struct lpuart_port *sport = dev_get_drvdata(dev); + bool irq_wake = irqd_is_wakeup_set(irq_get_irq_data(sport->port.irq)); unsigned long temp; - if (sport->port.suspended && !sport->port.irq_wake) + if (sport->port.suspended && !irq_wake) clk_prepare_enable(sport->clk); if (lpuart_is_32(sport)) { @@ -2330,7 +2335,7 @@ static int lpuart_resume(struct device *dev) } if (sport->lpuart_dma_rx_use) { - if (sport->port.irq_wake) { + if (irq_wake) { if (!lpuart_start_rx_dma(sport)) rx_dma_timer_init(sport); else -- cgit v1.2.3