Hi Rob,
On 09/16/2016 02:20 PM, Rob Herring wrote:
On Thu, Sep 08, 2016 at 11:12:19AM -0500, tthayer@xxxxxxxxxxxxxxxxxxxxx wrote:
From: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx>
Initialize the tx_loadsz parameter if it is defined in the
device tree.
Signed-off-by: Thor Thayer <tthayer@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/tty/serial/8250/8250_of.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_of.c b/drivers/tty/serial/8250/8250_of.c
index 38963d7..3e4be2f 100644
--- a/drivers/tty/serial/8250/8250_of.c
+++ b/drivers/tty/serial/8250/8250_of.c
@@ -195,6 +195,7 @@ static int of_platform_serial_probe(struct platform_device *ofdev)
switch (port_type) {
case PORT_8250 ... PORT_MAX_8250:
{
+ u32 prop;
struct uart_8250_port port8250;
memset(&port8250, 0, sizeof(port8250));
port8250.port = port;
@@ -202,6 +203,11 @@ static int of_platform_serial_probe(struct platform_device *ofdev)
if (port.fifosize)
port8250.capabilities = UART_CAP_FIFO;
+ /* Check for TX fifo load size */
+ if (of_property_read_u32(ofdev->dev.of_node,
+ "tx-loadsz", &prop) == 0)
+ port8250.tx_loadsz = prop;
This can be simplified to:
of_property_read_u32(ofdev->dev.of_node, "tx-loadsz", &port8250.tx_loadsz);
Yes, I originally had it implemented using that function but then I
realized the port8250.tx_loadsz is an unsigned int and therefore can
change size on different platforms.
The assignment handles that. In retrospect, I should probably change
this to a of_property_read_u8() anyway so that it won't cause compile
warnings in the smaller architectures.
Thank you for reviewing and the comments.
Thor
+
if (of_property_read_bool(ofdev->dev.of_node,
"auto-flow-control"))
port8250.capabilities |= UART_CAP_AFE;
--
1.7.9.5
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