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Commit 01d32d71 authored by Alexandre TORGUE's avatar Alexandre TORGUE Committed by Greg Kroah-Hartman
Browse files

serial: stm32: fix spin_lock management 



Signed-off-by: default avatarGerald Baeza <gerald.baeza@st.com>
Signed-off-by: default avatarAlexandre TORGUE <alexandre.torgue@st.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 34891872

drivers/tty/serial/stm32-usart.c

+4 −0
Original line number Diff line number Diff line
@@ -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