From: Erwan Le Ray <erwan.leray@foss.st.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jslaby@suse.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: <linux-serial@vger.kernel.org>, <linux-stm32@st-md-mailman.stormreply.com>, <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, Erwan Le Ray <erwan.leray@foss.st.com>, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, Valentin Caron <valentin.caron@foss.st.com> Subject: [PATCH 1/1] serial: stm32: improve platform_get_irq condition handling in init_port Date: Thu, 21 Jan 2021 15:23:09 +0100 [thread overview] Message-ID: <20210121142309.6327-1-erwan.leray@foss.st.com> (raw) Replace "ret" variable by "irq" variable from platform_get_irq condition handling in stm32_init_port as suggested by Jiri in "STM32 uart cleanup and improvement" series review. This change will prevent port->irq to be unexpectly modified by a potential change of "ret" value introduced by a new patch. Suggested-by: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com> diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 6a9a5ef5f5ba..dde6d526362d 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -981,11 +981,11 @@ static int stm32_usart_init_port(struct stm32_port *stm32port, { struct uart_port *port = &stm32port->port; struct resource *res; - int ret; + int ret, irq; - ret = platform_get_irq(pdev, 0); - if (ret <= 0) - return ret ? : -ENODEV; + irq = platform_get_irq(pdev, 0); + if (irq <= 0) + return irq ? : -ENODEV; port->iotype = UPIO_MEM; port->flags = UPF_BOOT_AUTOCONF; @@ -993,7 +993,7 @@ static int stm32_usart_init_port(struct stm32_port *stm32port, port->dev = &pdev->dev; port->fifosize = stm32port->info->cfg.fifosize; port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_STM32_CONSOLE); - port->irq = ret; + port->irq = irq; port->rs485_config = stm32_usart_config_rs485; ret = stm32_usart_init_rs485(port, pdev); -- 2.17.1
WARNING: multiple messages have this Message-ID (diff)
From: Erwan Le Ray <erwan.leray@foss.st.com> To: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Jiri Slaby <jslaby@suse.com>, Maxime Coquelin <mcoquelin.stm32@gmail.com>, Alexandre Torgue <alexandre.torgue@foss.st.com> Cc: Valentin Caron <valentin.caron@foss.st.com>, Erwan Le Ray <erwan.leray@foss.st.com>, linux-kernel@vger.kernel.org, Fabrice Gasnier <fabrice.gasnier@foss.st.com>, linux-serial@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/1] serial: stm32: improve platform_get_irq condition handling in init_port Date: Thu, 21 Jan 2021 15:23:09 +0100 [thread overview] Message-ID: <20210121142309.6327-1-erwan.leray@foss.st.com> (raw) Replace "ret" variable by "irq" variable from platform_get_irq condition handling in stm32_init_port as suggested by Jiri in "STM32 uart cleanup and improvement" series review. This change will prevent port->irq to be unexpectly modified by a potential change of "ret" value introduced by a new patch. Suggested-by: Jiri Slaby <jirislaby@kernel.org> Signed-off-by: Erwan Le Ray <erwan.leray@foss.st.com> diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c index 6a9a5ef5f5ba..dde6d526362d 100644 --- a/drivers/tty/serial/stm32-usart.c +++ b/drivers/tty/serial/stm32-usart.c @@ -981,11 +981,11 @@ static int stm32_usart_init_port(struct stm32_port *stm32port, { struct uart_port *port = &stm32port->port; struct resource *res; - int ret; + int ret, irq; - ret = platform_get_irq(pdev, 0); - if (ret <= 0) - return ret ? : -ENODEV; + irq = platform_get_irq(pdev, 0); + if (irq <= 0) + return irq ? : -ENODEV; port->iotype = UPIO_MEM; port->flags = UPF_BOOT_AUTOCONF; @@ -993,7 +993,7 @@ static int stm32_usart_init_port(struct stm32_port *stm32port, port->dev = &pdev->dev; port->fifosize = stm32port->info->cfg.fifosize; port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_STM32_CONSOLE); - port->irq = ret; + port->irq = irq; port->rs485_config = stm32_usart_config_rs485; ret = stm32_usart_init_rs485(port, pdev); -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-01-21 14:27 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-21 14:23 Erwan Le Ray [this message] 2021-01-21 14:23 ` [PATCH 1/1] serial: stm32: improve platform_get_irq condition handling in init_port Erwan Le Ray
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