From: Vineet Gupta <Vineet.Gupta1-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
To: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
Jiri Slaby <jslaby-AlSwsSmVLrQ@public.gmane.org>,
Paul Bolle <pebolle-IWqWACnzNjzz+pZb47iToQ@public.gmane.org>
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-serial-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Francois.Bedard-HKixBCOQz3hWk0Htik3J/w@public.gmane.org,
Vineet Gupta
<Vineet.Gupta1-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
Subject: [PATCH 3/9] serial/arc: Remove the workaround for legacy ISS
Date: Thu, 12 Jun 2014 16:01:33 +0530 [thread overview]
Message-ID: <1402569099-9900-4-git-send-email-vgupta@synopsys.com> (raw)
In-Reply-To: <1402569099-9900-1-git-send-email-vgupta-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
Signed-off-by: Vineet Gupta <vgupta-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
---
drivers/tty/serial/arc_uart.c | 14 --------------
1 file changed, 14 deletions(-)
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 4d971281e3d9..a6da10f84293 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -102,7 +102,6 @@
struct arc_uart_port {
struct uart_port port;
unsigned long baud;
- int is_emulated; /* H/w vs. Instruction Set Simulator */
};
#define to_arc_port(uport) container_of(uport, struct arc_uart_port, port)
@@ -387,17 +386,6 @@ arc_serial_set_termios(struct uart_port *port, struct ktermios *new,
uartl = hw_val & 0xFF;
uarth = (hw_val >> 8) & 0xFF;
- /*
- * UART ISS(Instruction Set simulator) emulation has a subtle bug:
- * A existing value of Baudh = 0 is used as a indication to startup
- * it's internal state machine.
- * Thus if baudh is set to 0, 2 times, it chokes.
- * This happens with BAUD=115200 and the formaula above
- * Until that is fixed, when running on ISS, we will set baudh to !0
- */
- if (uart->is_emulated)
- uarth = 1;
-
spin_lock_irqsave(&port->lock, flags);
UART_ALL_IRQ_DISABLE(port);
@@ -520,8 +508,6 @@ arc_uart_init_one(struct platform_device *pdev, int dev_id)
if (!plat_data)
return -ENODEV;
- uart->is_emulated = !!plat_data[0]; /* workaround ISS bug */
-
if (is_early_platform_device(pdev)) {
port->uartclk = plat_data[1];
uart->baud = plat_data[2];
--
1.8.3.2
--
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next prev parent reply other threads:[~2014-06-12 10:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-12 10:31 [PATCH 0/9] Generic earlyconsole for ARC UART Driver Vineet Gupta
2014-06-12 10:31 ` [PATCH 1/9] serial/arc: use uart_console_write() helper Vineet Gupta
2014-06-12 10:31 ` [PATCH 2/9] serial/arc: Refactor by referencing to uart_port where possible Vineet Gupta
2014-06-12 10:31 ` [PATCH 5/9] serial/arc: remove earlyprintk support and switch to earlycon Vineet Gupta
2014-06-12 10:31 ` [PATCH 6/9] serial/arc: remove last remanants of platform data Vineet Gupta
2014-06-12 10:31 ` [PATCH 7/9] serial/arc: inline the probe helper Vineet Gupta
2014-06-12 10:31 ` [PATCH 8/9] ARC: [arcfpga] RIP early uart platform device stuff Vineet Gupta
[not found] ` <1402569099-9900-1-git-send-email-vgupta-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
2014-06-12 10:31 ` Vineet Gupta [this message]
2014-06-12 10:31 ` [PATCH 4/9] serial/arc: Use generic earlycon infrastructure Vineet Gupta
2014-06-12 10:31 ` [PATCH 9/9] serial/arc: Add DT based earlycon support Vineet Gupta
[not found] ` <1402569099-9900-10-git-send-email-vgupta-HKixBCOQz3hWk0Htik3J/w@public.gmane.org>
2014-06-13 1:26 ` Rob Herring
2014-06-13 14:10 ` Vineet Gupta
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