From: Alexandre TORGUE <alexandre.torgue-qxv4g6HH51o@public.gmane.org>
To: Maxime Coquelin
<mcoquelin.stm32-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
gerald.baeza-qxv4g6HH51o@public.gmane.org,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Jiri Slaby <jslaby-IBi9RG/b67k@public.gmane.org>
Cc: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: [PATCH 09/11] serial: stm32: fix spin_lock management
Date: Thu, 15 Sep 2016 18:42:41 +0200 [thread overview]
Message-ID: <1473957763-30629-10-git-send-email-alexandre.torgue@st.com> (raw)
In-Reply-To: <1473957763-30629-1-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
Signed-off-by: Gerald Baeza <gerald.baeza-qxv4g6HH51o@public.gmane.org>
Signed-off-by: Alexandre TORGUE <alexandre.torgue-qxv4g6HH51o@public.gmane.org>
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 24c4d82..3b99d79 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c
@@ -321,6 +321,8 @@ static irqreturn_t stm32_interrupt(int irq, void *ptr)
struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
u32 sr;
+ spin_lock(&port->lock);
+
sr = readl_relaxed(port->membase + ofs->isr);
if ((sr & USART_SR_RXNE) && !(stm32_port->rx_ch))
@@ -329,6 +331,8 @@ static irqreturn_t stm32_interrupt(int irq, void *ptr)
if ((sr & USART_SR_TXE) && !(stm32_port->tx_ch))
stm32_transmit_chars(port);
+ spin_unlock(&port->lock);
+
if (stm32_port->rx_ch)
return IRQ_WAKE_THREAD;
else
--
1.9.1
--
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next prev parent reply other threads:[~2016-09-15 16:42 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 16:42 [PATCH 00/11] STM32 USART: fixes and new MCU support Alexandre TORGUE
[not found] ` <1473957763-30629-1-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
2016-09-15 16:42 ` [PATCH 01/11] serial: stm32: adding support for stm32f7 Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 02/11] DOCUMENTATION: dt-bindings: Document the STM32 USART bindings Alexandre TORGUE
[not found] ` <1473957763-30629-3-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
2016-09-23 15:29 ` Rob Herring
2016-10-05 14:09 ` Gerald Baeza
[not found] ` <dd28f224-3e3b-0a00-f978-16861b946fd1-qxv4g6HH51o@public.gmane.org>
2016-10-05 15:13 ` Rob Herring
[not found] ` <CAL_JsqK=VCHcPbupnwLVEWehqJbXfGD1CSZT++A4+N6DD6VqxA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-10-06 8:00 ` Alexandre Torgue
2016-09-15 16:42 ` [PATCH 03/11] serial: stm32: header file creation Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 04/11] serial: stm32: disable tx and rx during shutdown Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 05/11] serial: stm32: correct flow control property spelling Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 06/11] serial: stm32: clock disabling management Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 07/11] dt-bindings: Add DMA bindings for STM32 USART Alexandre TORGUE
[not found] ` <1473957763-30629-8-git-send-email-alexandre.torgue-qxv4g6HH51o@public.gmane.org>
2016-09-23 15:30 ` Rob Herring
2016-09-15 16:42 ` [PATCH 08/11] serial: stm32: adding dma support Alexandre TORGUE
2016-09-15 16:42 ` Alexandre TORGUE [this message]
2016-09-15 16:42 ` [PATCH 10/11] serial: stm32: fix uart enable management Alexandre TORGUE
2016-09-15 16:42 ` [PATCH 11/11] ARM: DT: STM32: add dma for usart1 on F429 Alexandre TORGUE
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