kernel/linux.git/drivers/tty/serial, branch v3.4.37

tty: serial: fix typo "ARCH_S5P6450"

2013-03-20T20:04:59+00:00

commit 827aa0d36d486f359808c8fb931cf7a71011a09d upstream. This could have been either ARCH_S5P64X0 or CPU_S5P6450. Looking at commit 2555e663b367b8d555e76023f4de3f6338c28d6c ("ARM: S5P64X0: Add UART serial support for S5P6450") - which added this typo - makes clear this should be CPU_S5P6450. Signed-off-by: Paul Bolle Acked-by: Kukjin Kim Signed-off-by: Greg Kroah-Hartman

serial: 8250_pci: add support for another kind of NetMos Technology PCI 9835 Multi-I/O Controller

2013-03-20T20:04:58+00:00

commit 8d2f8cd424ca0b99001f3ff4f5db87c4e525f366 upstream. 01:08.0 Communication controller: NetMos Technology PCI 9835 Multi-I/O Controller (rev 01) Subsystem: Device [1000:0012] Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- SERR- Signed-off-by: Greg Kroah-Hartman

tty: 8250_dw: Fix inverted arguments to serial_out in IRQ handler

2013-01-21T19:45:26+00:00

commit 68e56cb3a068f9c30971c6117fbbd1e32918e49e upstream. Signed-off-by: Maxime Ripard Signed-off-by: Greg Kroah-Hartman

serial:ifx6x60:Delete SPI timer when shut down port

2013-01-21T19:45:26+00:00

commit 014b9b4ce84281ccb3d723c792bed19815f3571a upstream. When shut down SPI port, it's possible that MRDY has been asserted and a SPI timer was activated waiting for SRDY assert, in the case, it needs to delete this timer. Signed-off-by: Chen Jun Signed-off-by: channing Signed-off-by: Greg Kroah-Hartman

Revert "serial: omap: fix software flow control"

2012-11-26T19:38:44+00:00

commit a4f743851f74fc3e0cc40c13082e65c24139f481 upstream. This reverts commit 957ee7270d632245b43f6feb0e70d9a5e9ea6cf6 (serial: omap: fix software flow control). As Russell has pointed out, that commit isn't fixing Software Flow Control at all, and it actually makes it even more broken. It was agreed to revert this commit and use Russell's latest UART patches instead. Signed-off-by: Felipe Balbi Cc: Russell King Acked-by: Tony Lindgren Cc: Andreas Bießmann Signed-off-by: Greg Kroah-Hartman

serial: set correct baud_base for EXSYS EX-41092 Dual 16950

2012-10-07T15:32:25+00:00

commit 26e8220adb0aec43b7acafa0f1431760eee28522 upstream. Apparently the same card model has two IDs, so this patch complements the commit 39aced68d664291db3324d0fcf0985ab5626aac2 adding the missing one. Signed-off-by: Flavio Leitner Signed-off-by: Greg Kroah-Hartman

serial: pl011: handle corruption at high clock speeds

2012-10-07T15:32:25+00:00

commit c5dd553b9fd069892c9e2de734f4f604e280fa7a upstream. This works around a few glitches in the ST version of the PL011 serial driver when using very high baud rates, as we do in the Ux500: 3, 3.25, 4 and 4.05 Mbps. Problem Observed/rootcause: When using high baud-rates, and the baudrate*8 is getting close to the provided clock frequency (so a division factor close to 1), when using bursts of characters (so they are abutted), then it seems as if there is not enough time to detect the beginning of the start-bit which is a timing reference for the entire character, and thus the sampling moment of character bits is moving towards the end of each bit, instead of the middle. Fix: Increase slightly the RX baud rate of the UART above the theoretical baudrate by 5%. This will definitely give more margin time to the UART_RX to correctly sample the data at the middle of the bit period. Also fix the ages old copy-paste error in the very stressed comment, it's referencing the registers used in the PL010 driver rather than the PL011 ones. Signed-off-by: Guillaume Jaunet Signed-off-by: Christophe Arnal Signed-off-by: Matthias Locher Signed-off-by: Rajanikanth HV Cc: Bibek Basu Cc: Par-Gunnar Hjalmdahl Signed-off-by: Linus Walleij Signed-off-by: Greg Kroah-Hartman

serial: omap: fix software flow control

2012-10-07T15:32:25+00:00

commit 957ee7270d632245b43f6feb0e70d9a5e9ea6cf6 upstream. Software flow control register bits were not defined correctly. Also clarify the IXON and IXOFF logic to reflect what userspace wants. Tested-by: Shubhrajyoti D Signed-off-by: Vikram Pandita Signed-off-by: Shubhrajyoti D Acked-by: Tony Lindgren Signed-off-by: Felipe Balbi Signed-off-by: Greg Kroah-Hartman

pch_uart: Add eg20t_port lock field, avoid recursive spinlocks

2012-10-02T17:30:37+00:00

commit 2588aba002d14e938c2f56d299ecf3e7ce1302a5 upstream. pch_uart_interrupt() takes priv->port.lock which leads to two recursive spinlock calls if low_latency==1 or CONFIG_PREEMPT_RT_FULL=y (one otherwise): pch_uart_interrupt spin_lock_irqsave(priv->port.lock, flags) case PCH_UART_IID_RDR_TO (data ready) handle_rx_to push_rx tty_port_tty_get spin_lock_irqsave(&port->lock, flags) <--- already hold this lock ... tty_flip_buffer_push ... flush_to_ldisc spin_lock_irqsave(&tty->buf.lock) spin_lock_irqsave(&tty->buf.lock) disc->ops->receive_buf(tty, char_buf) n_tty_receive_buf tty->ops->flush_chars() uart_flush_chars uart_start spin_lock_irqsave(&port->lock) <--- already hold this lock Avoid this by using a dedicated lock to protect the eg20t_port structure and IO access to its membase. This is more consistent with the 8250 driver. Ensure priv->lock is always take prior to priv->port.lock when taken at the same time. V2: Remove inadvertent whitespace change. V3: Account for oops_in_progress for the private lock in pch_console_write(). Note: Like the 8250 driver, if a printk is introduced anywhere inside the pch_console_write() critical section, the kernel will hang on a recursive spinlock on the private lock. The oops case is handled by using a trylock in the oops_in_progress case. Signed-off-by: Darren Hart CC: Tomoya MORINAGA CC: Feng Tang CC: Alexander Stein Acked-by: Alan Cox Signed-off-by: Greg Kroah-Hartman

pch_uart: Fix parity setting issue

2012-10-02T17:30:36+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