| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <1244555211-15618-5-git-send-email-os@emlix.com> Date: Tue, 9 Jun 2009 15:46:47 +0200 From: "Oskar Schirmer" <os@...ix.com> To: Sascha Hauer <kernel@...gutronix.de> Cc: linux-kernel@...r.kernel.org, Fabian Godehardt <fg@...ix.com>, Oskar Schirmer <os@...ix.com> Subject: [PATCH 4/8] imx: serial: be sure to stop xmit upon shutdown From: Fabian Godehardt <fg@...ix.com> needed to avoid continued transmission by hardware while software already shuts down, which might cause dangling characters to show up in hardware queues when restarting the device. Signed-off-by: Fabian Godehardt <fg@...ix.com> Signed-off-by: Oskar Schirmer <os@...ix.com> --- drivers/serial/imx.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/serial/imx.c b/drivers/serial/imx.c index afcec9e..3fa07a9 100644 --- a/drivers/serial/imx.c +++ b/drivers/serial/imx.c @@ -634,6 +634,10 @@ static void imx_shutdown(struct uart_port *port) struct imx_port *sport = (struct imx_port *)port; unsigned long temp; + temp = readl(sport->port.membase + UCR2); + temp &= ~(UCR2_TXEN); + writel(temp, sport->port.membase + UCR2); + /* * Stop our timer. */ -- 1.5.3.7 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists