kernel/linux.git/drivers/serial/serial_core.c, branch linux-2.6.22.y

Serial: serial_core, use pr_debug

2007-05-07T19:12:51+00:00

serial_core, use pr_debug Signed-off-by: Jiri Slaby Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

serial: define FIXED_PORT flag for serial_core

2007-05-07T19:12:50+00:00

At present, the serial core always allows setserial in userspace to change the port address, irq and base clock of any serial port. That makes sense for legacy ISA ports, but not for (say) embedded ns16550 compatible serial ports at peculiar addresses. In these cases, the kernel code configuring the ports must know exactly where they are, and their clocking arrangements (which can be unusual on embedded boards). It doesn't make sense for userspace to change these settings. Therefore, this patch defines a UPF_FIXED_PORT flag for the uart_port structure. If this flag is set when the serial port is configured, any attempts to alter the port's type, io address, irq or base clock with setserial are ignored. In addition this patch uses the new flag for on-chip serial ports probed in arch/powerpc/kernel/legacy_serial.c, and for other hard-wired serial ports probed by drivers/serial/of_serial.c. Signed-off-by: David Gibson Cc: Russell King Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

serial driver PMC MSP71xx

2007-05-07T19:12:50+00:00

Serial driver patch for the PMC-Sierra MSP71xx devices. There are three different fixes: 1 Fix for DesignWare APB THRE errata: In brief, this is a non-standard 16550 in that the THRE interrupt will not re-assert itself simply by disabling and re-enabling the THRI bit in the IER, it is only re-enabled if a character is actually sent out. It appears that the "8250-uart-backup-timer.patch" in the "mm" tree also fixes it so we have dropped our initial workaround. This patch now needs to be applied on top of that "mm" patch. 2 Fix for Busy Detect on LCR write: The DesignWare APB UART has a feature which causes a new Busy Detect interrupt to be generated if it's busy when the LCR is written. This fix saves the value of the LCR and rewrites it after clearing the interrupt. 3 Workaround for interrupt/data concurrency issue: The SoC needs to ensure that writes that can cause interrupts to be cleared reach the UART before returning from the ISR. This fix reads a non-destructive register on the UART so the read transaction completion ensures the previously queued write transaction has also completed. Signed-off-by: Marc St-Jean Cc: Russell King Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] serial: replace kmalloc+memset with kzalloc

2007-02-14T16:09:52+00:00

Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] serial: make sure UART is powered up when dumping MCTRL status

2007-02-14T16:09:52+00:00

Since serial devices are powered down when not in use and some of those devices cannot be accessed when powered down, we need to enable power around calls to get_mcrtl() when dumping port state via uart_line_info(). This resolves hangs observed on some machines while reading serial device registers when a port is powered off. Signed-off-by: George G. Davis Cc: Russell King Cc: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] tty: switch to ktermios

2006-12-08T16:28:57+00:00

This is the grungy swap all the occurrences in the right places patch that goes with the updates. At this point we have the same functionality as before (except that sgttyb() returns speeds not zero) and are ready to begin turning new stuff on providing nobody reports lots of bugs If you are a tty driver author converting an out of tree driver the only impact should be termios->ktermios name changes for the speed/property setting functions from your upper layers. If you are implementing your own TCGETS function before then your driver was broken already and its about to get a whole lot more painful for you so please fix it 8) Also fill in c_ispeed/ospeed on init for most devices, although the current code will do this for you anyway but I'd like eventually to lose that extra paranoia [akpm@osdl.org: bluetooth fix] [mp3@de.ibm.com: sclp fix] [mp3@de.ibm.com: warning fix for tty3270] [hugh@veritas.com: fix tty_ioctl powerpc build] [jdike@addtoit.com: uml: fix ->set_termios declaration] Signed-off-by: Alan Cox Signed-off-by: Martin Peschke Acked-by: Peter Oberparleiter Cc: Cornelia Huck Signed-off-by: Hugh Dickins Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial

2006-10-03T16:13:29+00:00

* 'devel' of master.kernel.org:/home/rmk/linux-2.6-serial: (21 commits) [SERIAL] add PNP IDs for FPI based touchscreens [SERIAL] Magic SysRq SAK does nothing on serial consoles [SERIAL] tickle NMI watchdog on serial output. [SERIAL] Fix oops when removing suspended serial port [SERIAL] Fix resume handling bug [SERIAL] Remove wrong asm/serial.h inclusions [SERIAL] CONFIG_PM=n slim: drivers/serial/8250_pci.c [SERIAL] OMAP1510 serial fix for 115200 baud [SERIAL] returning proper error from serial core driver [SERIAL] Make uart_line_info() correctly tell MMIO from I/O port [SERIAL] suspend/resume handlers don't have level arg anymore [SERIAL] 8250 resourse management fixes [SERIAL] serial_cs: Add quirk for brainboxes 2-port RS232 card [SERIAL] serial_cs: handle Nokia multi->single port bodge via config quirk [SERIAL] serial_cs: add configuration quirk [SERIAL] serial_cs: Convert Oxford 950 / Possio GCC wakeup quirk [SERIAL] serial_cs: convert IBM post-init handling to a quirk [SERIAL] serial_cs: allow wildcarded quirks [SERIAL] serial_cs: convert multi-port table to quirk table [SERIAL] serial_cs: Use clean up multiport card detection ...

[PATCH] const struct tty_operations

2006-10-02T14:57:14+00:00

As part of an SMP cleanliness pass over UML, I consted a bunch of structures in order to not have to document their locking. One of these structures was a struct tty_operations. In order to const it in UML without introducing compiler complaints, the declaration of tty_set_operations needs to be changed, and then all of its callers need to be fixed. This patch declares all struct tty_operations in the tree as const. In all cases, they are static and used only as input to tty_set_operations. As an extra check, I ran an i386 allyesconfig build which produced no extra warnings. 53 drivers are affected. I checked the history of a bunch of them, and in most cases, there have been only a handful of maintenance changes in the last six months. serial_core.c was the busiest one that I looked at. Signed-off-by: Jeff Dike Acked-by: Alan Cox Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[SERIAL] Fix oops when removing suspended serial port

2006-10-01T16:17:40+00:00

A serial card might have been removed when the system is resumed. This results in a suspended port being shut down, which results in the ports shutdown method being called twice in a row. This causes BUGs. Avoid this by tracking the suspended state separately from the initialised state. Signed-off-by: Russell King

[SERIAL] returning proper error from serial core driver

2006-10-01T16:07:00+00:00

Fix the issue of returning 0 even in case of error from uart_set_info function. Now it returns the error EBUSY when it can not set new port. Signed-off-by: Ram Gupta Signed-off-by: Andrew Morton Signed-off-by: Russell King