linux-toradex.git/drivers/tty, branch v3.0.44

pch_uart: Fix parity setting issue

2012-10-02T16:47:53+00:00

commit 38bd2a1ac736901d1cf4971c78ef952ba92ef78b upstream.

Parity Setting value is reverse.
E.G. In case of setting ODD parity, EVEN value is set.
This patch inverts "if" condition.

Signed-off-by: Tomoya MORINAGA 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

pch_uart: Fix rx error interrupt setting issue

2012-10-02T16:47:53+00:00

commit 9539dfb7ac1c84522fe1f79bb7dac2990f3de44a upstream.

Rx Error interrupt(E.G. parity error) is not enabled.
So, when parity error occurs, error interrupt is not occurred.
As a result, the received data is not dropped.

This patch adds enable/disable rx error interrupt code.

Signed-off-by: Tomoya MORINAGA 
Acked-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

pch_uart: Fix missing break for 16 byte fifo

2012-10-02T16:47:53+00:00

commit 9bc03743fff0770dc5a5324ba92e67cc377f16ca upstream.

Otherwise we fall back to the wrong value.

Reported-by: 
Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=44091
Signed-off-by: Alan Cox 
Signed-off-by: Tomoya MORINAGA 
Signed-off-by: Greg Kroah-Hartman

tty: Allow uart_register/unregister/register

2012-06-01T07:12:56+00:00

commit 1e66cded334e6cea596c72f6f650eec351b1e959 upstream.

This is legitimate but because we don't clear the drv->state pointer in the
unregister code causes a bogus BUG().

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=42880
Signed-off-by: Alan Cox 
Signed-off-by: Greg Kroah-Hartman

Add missing call to uart_update_timeout()

2012-06-01T07:12:56+00:00

commit 8b979f7c6bf13a57e7b6002f1175312a44773960 upstream.

This patch fixes a problem reported here:
http://article.gmane.org/gmane.linux.ports.arm.kernel/155242/match=auart

Signed-off-by: Lothar Waßmann 
Signed-off-by: Greg Kroah-Hartman

drivers/tty/amiserial.c: add missing tty_unlock

2012-04-27T16:51:07+00:00

commit d3a7b83f865b46bb7b5e1ed18a129ce1af349db4 upstream.

tty_unlock is used on all other exits from the function.

Signed-off-by: Julia Lawall 
Acked-by: Jiri Slaby 
Signed-off-by: Greg Kroah-Hartman

pch_uart: Fix dma channel unallocated issue

2012-04-27T16:51:07+00:00

commit af6d17cdc8c89aeb3101f0d27cd32fc0592b40b2 upstream.

This driver anticipates pch_uart_verify_port() is not called
during installation.
However, actually pch_uart_verify_port() is called during
installation.
As a result, memory access violation occurs like below.

0. initial value: use_dma=0
1. starup()
    - dma channel is not allocated because use_dma=0
2. pch_uart_verify_port()
    - Set use_dma=1
3. UART processing acts DMA mode because use_dma=1
     - memory access violation occurs!

This patch fixes the issue.

Solution:
Whenever pch_uart_verify_port() is called and then
dma channel is not allocated, the channel should be allocated.

Signed-off-by: Tomoya MORINAGA 
Signed-off-by: Greg Kroah-Hartman

ARM: clps711x: serial driver hungs are a result of call disable_irq within ISR

2012-04-27T16:51:05+00:00

commit 7a6fbc9a887193a1e9f8658703881c528040afbc upstream.

Since 2.6.30-rc1 clps711x serial driver hungs system. This is a result
of call disable_irq from ISR. synchronize_irq waits for end of interrupt
and goes to infinite loop. This patch fix this problem.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

8250_pci: Fix kernel panic when pch_uart is disabled

2012-04-22T23:21:44+00:00

commit 64d91cfaade2155ad048fe3b65238a052e29dde4 upstream.

Currently, ".setup" function is not set.
As a result, when detecting our IOH's uart device without pch_uart, kernel panic
occurs at the following of pciserial_init_ports().

	for (i = 0; i < nr_ports; i++) {
		if (quirk->setup(priv, board, &serial_port, i))
			break;

So, this patch adds the ".setup" function.
We can use pci_default_setup because our IOH's uart is compatible with 16550.

Signed-off-by: Tomoya MORINAGA 
Acked-by: Alan Cox 
Signed-off-by: Tomoya MORINAGA 
Signed-off-by: Greg Kroah-Hartman

pch_uart: Set PCIe bus number using probe parameter

2012-04-22T23:21:43+00:00

commit 6c4b47d243112e98811ce0da7bbb32cc3857dd1a upstream.

Currently, PCIe bus number is set as fixed value "2".
However, PCIe bus number is not always "2".
This patch sets bus number using probe() parameter.

Signed-off-by: Tomoya MORINAGA 
Signed-off-by: Tomoya MORINAGA 
Signed-off-by: Greg Kroah-Hartman