From mboxrd@z Thu Jan 1 00:00:00 1970 From: troy.kisky@boundarydevices.com (Troy Kisky) Date: Fri, 20 Oct 2017 14:20:19 -0700 Subject: [PATCH v2 1/3] tty: serial: imx: disable ageing timer interrupt if dma in use Message-ID: <20171020212021.13065-1-troy.kisky@boundarydevices.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Since commit 4dec2f119e86 ("imx-serial: RX DMA startup latency") the interrupt routine no longer will start rx dma. So, we no longer need to enable this interrupt to start dma. Signed-off-by: Troy Kisky --- v2: split into a series of 2 patches --- drivers/tty/serial/imx.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index dfeff3951f93..bf47b15df2e8 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -1207,10 +1207,6 @@ static void imx_enable_dma(struct imx_port *sport) temp |= UCR1_RDMAEN | UCR1_TDMAEN | UCR1_ATDMAEN; writel(temp, sport->port.membase + UCR1); - temp = readl(sport->port.membase + UCR2); - temp |= UCR2_ATEN; - writel(temp, sport->port.membase + UCR2); - imx_setup_ufcr(sport, TXTL_DMA, RXTL_DMA); sport->dma_is_enabled = 1; -- 2.11.0