From: Anson Huang <Anson.Huang@nxp.com> To: gregkh@linuxfoundation.org, jslaby@suse.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Linux-imx@nxp.com Subject: [PATCH] tty: serial: imx: Only get second/third IRQ when there is more than one IRQ Date: Wed, 9 Oct 2019 14:18:31 +0800 [thread overview] Message-ID: <1570601911-9162-1-git-send-email-Anson.Huang@nxp.com> (raw) All i.MX SoCs except i.MX1 have ONLY 1 IRQ, so it is better to check the IRQ count before getting second/third IRQ to avoid below error message during probe: [ 0.726219] imx-uart 30860000.serial: IRQ index 1 not found [ 0.731329] imx-uart 30860000.serial: IRQ index 2 not found Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- drivers/tty/serial/imx.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 504d81c..081fa82 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -2198,6 +2198,7 @@ static int imx_uart_probe(struct platform_device *pdev) u32 ucr1; struct resource *res; int txirq, rxirq, rtsirq; + int irq_count; sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL); if (!sport) @@ -2220,9 +2221,17 @@ static int imx_uart_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); + irq_count = platform_irq_count(pdev); + if (irq_count < 0) + return irq_count; + rxirq = platform_get_irq(pdev, 0); - txirq = platform_get_irq(pdev, 1); - rtsirq = platform_get_irq(pdev, 2); + if (irq_count > 1) { + txirq = platform_get_irq(pdev, 1); + rtsirq = platform_get_irq(pdev, 2); + } else { + txirq = rtsirq = -ENXIO; + } sport->port.dev = &pdev->dev; sport->port.mapbase = res->start; -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Anson Huang <Anson.Huang@nxp.com> To: gregkh@linuxfoundation.org, jslaby@suse.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Linux-imx@nxp.com Subject: [PATCH] tty: serial: imx: Only get second/third IRQ when there is more than one IRQ Date: Wed, 9 Oct 2019 14:18:31 +0800 [thread overview] Message-ID: <1570601911-9162-1-git-send-email-Anson.Huang@nxp.com> (raw) All i.MX SoCs except i.MX1 have ONLY 1 IRQ, so it is better to check the IRQ count before getting second/third IRQ to avoid below error message during probe: [ 0.726219] imx-uart 30860000.serial: IRQ index 1 not found [ 0.731329] imx-uart 30860000.serial: IRQ index 2 not found Signed-off-by: Anson Huang <Anson.Huang@nxp.com> --- drivers/tty/serial/imx.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c index 504d81c..081fa82 100644 --- a/drivers/tty/serial/imx.c +++ b/drivers/tty/serial/imx.c @@ -2198,6 +2198,7 @@ static int imx_uart_probe(struct platform_device *pdev) u32 ucr1; struct resource *res; int txirq, rxirq, rtsirq; + int irq_count; sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL); if (!sport) @@ -2220,9 +2221,17 @@ static int imx_uart_probe(struct platform_device *pdev) if (IS_ERR(base)) return PTR_ERR(base); + irq_count = platform_irq_count(pdev); + if (irq_count < 0) + return irq_count; + rxirq = platform_get_irq(pdev, 0); - txirq = platform_get_irq(pdev, 1); - rtsirq = platform_get_irq(pdev, 2); + if (irq_count > 1) { + txirq = platform_get_irq(pdev, 1); + rtsirq = platform_get_irq(pdev, 2); + } else { + txirq = rtsirq = -ENXIO; + } sport->port.dev = &pdev->dev; sport->port.mapbase = res->start; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2019-10-09 6:20 UTC|newest] Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-10-09 6:18 Anson Huang [this message] 2019-10-09 6:18 ` [PATCH] tty: serial: imx: Only get second/third IRQ when there is more than one IRQ Anson Huang 2019-10-09 6:53 ` Uwe Kleine-König 2019-10-09 6:53 ` Uwe Kleine-König 2019-10-09 6:58 ` Anson Huang 2019-10-09 6:58 ` Anson Huang 2019-10-09 6:58 ` Anson Huang 2019-10-09 7:14 ` Uwe Kleine-König 2019-10-09 7:14 ` Uwe Kleine-König 2019-10-09 7:14 ` Uwe Kleine-König 2019-10-09 7:24 ` Anson Huang 2019-10-09 7:24 ` Anson Huang 2019-10-09 7:24 ` Anson Huang 2019-10-09 7:37 ` Uwe Kleine-König 2019-10-09 7:37 ` Uwe Kleine-König 2019-10-09 7:37 ` Uwe Kleine-König 2019-10-09 7:43 ` Anson Huang 2019-10-09 7:43 ` Anson Huang 2019-10-09 7:43 ` Anson Huang 2019-10-09 8:12 ` Andy Shevchenko 2019-10-09 8:12 ` Andy Shevchenko 2019-10-09 9:29 ` Uwe Kleine-König 2019-10-09 9:29 ` Uwe Kleine-König 2019-10-09 9:36 ` Anson Huang 2019-10-09 9:36 ` Anson Huang
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