提交 dd0a3e77 编写于 作者: S SUGIOKA Toshinobu 提交者: Paul Mundt

serial: sh-sci: Fix up PORT_SCI console output ordering.

Fix SCI transmission sequence in console output function.

This reorders the write sequence to match the SH-3 manual, and corrects
a console corruption bug observed on SH-3 SCI.
Signed-off-by: NToshinobu Sugioka <sugioka@itonet.co.jp>
Signed-off-by: NPaul Mundt <lethal@linux-sh.org>
上级 47785414
......@@ -151,9 +151,8 @@ static void sci_poll_put_char(struct uart_port *port, unsigned char c)
status = sci_in(port, SCxSR);
} while (!(status & SCxSR_TDxE(port)));
sci_in(port, SCxSR); /* Dummy read */
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
sci_out(port, SCxTDR, c);
sci_out(port, SCxSR, SCxSR_TDxE_CLEAR(port) & ~SCxSR_TEND(port));
}
#endif /* CONFIG_CONSOLE_POLL || CONFIG_SERIAL_SH_SCI_CONSOLE */
......
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