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| author | Vineet Gupta <Vineet.Gupta1@synopsys.com> | 2014-06-24 13:55:08 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-07-10 15:43:27 -0700 |
| commit | 5a56d59e853b3dcd97e9497c1c7d3834b24f0664 (patch) | |
| tree | 6d02533a10b69452b7278c406be376f1ba0c9a06 /drivers/tty/serial/arc_uart.c | |
| parent | 12d15e6f6377fe46b1f9dc51133890a732f1ae05 (diff) | |
| download | linux-stable-5a56d59e853b3dcd97e9497c1c7d3834b24f0664.tar.gz linux-stable-5a56d59e853b3dcd97e9497c1c7d3834b24f0664.tar.bz2 linux-stable-5a56d59e853b3dcd97e9497c1c7d3834b24f0664.zip | |
serial/arc: Remove the workaround for legacy ISS
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/arc_uart.c')
| -rw-r--r-- | drivers/tty/serial/arc_uart.c | 14 |
1 files changed, 0 insertions, 14 deletions
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c index b58544de4e86..ea954c3be18b 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) @@ -380,17 +379,6 @@ 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); @@ -512,8 +500,6 @@ 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]; |