This is a note to let you know that I've just added the patch titled
serial: uartps: Fix interrupt mask issue to handle the RX interrupts
to my tty git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty.git in the tty-testing branch.
The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)
The patch will be merged to the tty-next branch sometime soon, after it passes testing, and the merge window is open.
If you have any questions about this process, please let me know.
From 260683137ab5276113fc322fdbbc578024185fee Mon Sep 17 00:00:00 2001
From: Nava kishore Manne nava.manne@xilinx.com Date: Tue, 18 Dec 2018 13:18:42 +0100 Subject: serial: uartps: Fix interrupt mask issue to handle the RX interrupts properly
This patch Correct the RX interrupt mask value to handle the RX interrupts properly.
Fixes: c8dbdc842d30 ("serial: xuartps: Rewrite the interrupt handling logic") Signed-off-by: Nava kishore Manne nava.manne@xilinx.com Cc: stable stable@vger.kernel.org Signed-off-by: Michal Simek michal.simek@xilinx.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/tty/serial/xilinx_uartps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/serial/xilinx_uartps.c b/drivers/tty/serial/xilinx_uartps.c index c6d38617d622..094f2958cb2b 100644 --- a/drivers/tty/serial/xilinx_uartps.c +++ b/drivers/tty/serial/xilinx_uartps.c @@ -123,7 +123,7 @@ MODULE_PARM_DESC(rx_timeout, "Rx timeout, 1-255"); #define CDNS_UART_IXR_RXTRIG 0x00000001 /* RX FIFO trigger interrupt */ #define CDNS_UART_IXR_RXFULL 0x00000004 /* RX FIFO full interrupt. */ #define CDNS_UART_IXR_RXEMPTY 0x00000002 /* RX FIFO empty interrupt. */ -#define CDNS_UART_IXR_MASK 0x00001FFF /* Valid bit mask */ +#define CDNS_UART_IXR_RXMASK 0x000021e7 /* Valid RX bit mask */
/* * Do not enable parity error interrupt for the following @@ -364,7 +364,7 @@ static irqreturn_t cdns_uart_isr(int irq, void *dev_id) cdns_uart_handle_tx(dev_id); isrstatus &= ~CDNS_UART_IXR_TXEMPTY; } - if (isrstatus & CDNS_UART_IXR_MASK) + if (isrstatus & CDNS_UART_IXR_RXMASK) cdns_uart_handle_rx(dev_id, isrstatus);
spin_unlock(&port->lock);