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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 <bhuvanchandra.dv@toradex.com>
Cc: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2017-08-13 17:47:39 +03:00 committed by Greg Kroah-Hartman
parent 4d691f7592
commit 3d6bcddf54
1 changed files with 9 additions and 4 deletions
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13
drivers/tty/serial/fsl_lpuart.c
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@ -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