- 27 Mar, 2006 40 commits
-
-
Antonino A. Daplas authored
The scrollback buffer of the VGA console is located in VGA RAM. This RAM is fixed in size and is very small. To make the scrollback buffer larger, it must be placed instead in System RAM. This patch adds this feature. The feature and the size of the buffer are made as a kernel config option. Besides consuming kernel memory, this feature will slow down the console by approximately 20%. Signed-off-by:
Antonino Daplas <adaplas@pol.net> Signed-off-by:
Jiri Slaby <jirislaby@gmail.com> Cc: Jindrich Makovicka <makovick@kmlinux.fjfi.cvut.cz> Cc: Martin Mares <mj@ucw.cz> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
-
Samuel Thibault authored
This corrects cursor resize on ega boards: registers are write-only, so we shouldn't even try to read them. And on ega, 31/30 produces a flat cursor. Using 31/31 is better: except with 32 pixels high fonts, it shouldn't show up. Signed-off-by:
Samuel Thibault <samuel.thibault@ens-lyon.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Adam Belay <ambx1@neo.rr.com> Cc: Jaroslav Kysela <perex@suse.cz> Acked-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix some __init/__devinit issues. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. And fix a __init/__devinit issue. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_card_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Returning the count is unreliable because devices may be hot-plugged in the future. This changes the convention to "zero for success, or a negative error value," which matches pci_register_driver(), acpi_bus_register_driver(), and platform_driver_register(). Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
This series of patches removes the assumption that pnp_register_driver() returns the number of devices claimed. Returning the count is unreliable because devices may be hot-plugged in the future. (Many devices don't support hot-plug, of course, but PNP in general does.) This changes the convention to "zero for success, or a negative error value," which matches pci_register_driver(), acpi_bus_register_driver(), and platform_driver_register(). If drivers need to know the number of devices, they can count calls to their .probe() methods. This patch: Remove the assumption that pnp_register_driver() returns the number of devices claimed. Signed-off-by:
-
Bjorn Helgaas authored
Remove the assumption that pnp_register_driver() returns the number of devices claimed. parport_pc_init() does nothing with "count", so remove it. Then nobody uses the return value of parport_pc_find_ports(), so make it void. Finally, update pnp_register_driver() usage. Signed-off-by:
-
Alessandro Zummo authored
Add a driver for the ST M48T86 / Dallas DS12887 RTC. This is a platform driver. The platform device must provide I/O routines to access the RTC. Signed-off-by:
Alessandro Zummo <a.zummo@towertech.it> Cc: Greg KH <greg@kroah.com> Signed-off-by:
-
Richard Purdie authored
Add an RTC subsystem driver for the ARM SA1100/PXA2XX processor RTC. Signed-off-by:
Richard Purdie <rpurdie@rpsys.net> Signed-off-by:
-
Alessandro Zummo authored
This patch adds a driver for the RTC embedded in the Cirrus Logic EP93XX family of processors. Signed-off-by:
-
Alessandro Zummo authored
RTC class aware driver for the Ricoh RS5C372 chip used, among others, on the Synology DS101. Signed-off-by:
-
Alessandro Zummo authored
An RTC class aware driver for the Philips PCF8563 RTC and Epson RTC8564 chips. This chip is used on the Iomega NAS100D. Signed-off-by:
-
Alessandro Zummo authored
Driver for the Dallas/Maxim DS1672 chip, found on the Loft (http://www.giantshoulderinc.com). Signed-off-by:
-
Alessandro Zummo authored
Interrupts can be generated by echo "alarm|tick|update" >/sys/class/rtc/rtcX/device/irq Signed-off-by:
-
Alessandro Zummo authored
A port of the existing x1205 driver under the new RTC subsystem. It is actually under test within the NSLU2 project (http://www.nslu2-linux.org) and it is working quite well. It is the first driver under this new subsystem and should be used as a guide to port other drivers. Signed-off-by:
-
Alessandro Zummo authored
Add the dev interface to the RTC subsystem. Each RTC will be available under /dev/rtcX . A symlink from /dev/rtc0 to /dev/rtc cab be obtained with the following udev rule: KERNEL=="rtc0", SYMLINK+="rtc" Signed-off-by:
Greg Kroah-Hartman <gregkh@suse.de> Signed-off-by:
-
Alessandro Zummo authored
Add the proc interface to the RTC subsystem. The first RTC driver which registers with the class will be accessible by /proc/driver/rtc . This is required for compatibility with the standard RTC driver and to avoid breaking any user space application which may erroneusly rely on this. Signed-off-by:
-
Alessandro Zummo authored
This patch adds the sysfs interface to the RTC subsystem. Each RTC client will have his own entry under /sys/classs/rtc/rtcN . Within this entry some attributes are exported by the subsystem, like date and time. Signed-off-by:
-
Alessandro Zummo authored
This patch adds the I2C driver ids to i2c-id.h in preparation of the I2C direct probing method. This is kept separate so that it can be integrated to Signed-off-by:
-
Alessandro Zummo authored
This patch, completely optional, removes from drivers/i2c/chips all the drivers that are implemented in the new RTC subsystem. It should be noted that none of the current driver is actually integrated, i.e. usable without further patches. Signed-off-by:
-
Alessandro Zummo authored
Add the basic RTC subsystem infrastructure to the kernel. rtc/class.c - registration facilities for RTC drivers rtc/interface.c - kernel/rtc interface functions rtc/hctosys.c - snippet of code that copies hw clock to sw clock at bootup, if configured to do so. Signed-off-by:
-
Richard Purdie authored
Fix some namespace conflicts between the RTC subsystem and the ARM Integrator time functions. Signed-off-by:
-
Alessandro Zummo authored
This patch removes from the ARM subsytem some of the rtc-related functions that have been included in the RTC subsystem. It also fixes some naming collisions. Signed-off-by:
-
Alessandro Zummo authored
RTC and date/time related functions. Signed-off-by:
-
Yoichi Yuasa authored
Fix the collision of rtc function name. Signed-off-by:
Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
-
Alan Stern authored
The kernel's implementation of notifier chains is unsafe. There is no protection against entries being added to or removed from a chain while the chain is in use. The issues were discussed in this thread: http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2 We noticed that notifier chains in the kernel fall into two basic usage classes: "Blocking" chains are always called from a process context and the callout routines are allowed to sleep; "Atomic" chains can be called from an atomic context and the callout routines are not allowed to sleep. We decided to codify this distinction and make it part of the API. Therefore this set of patches introduces three new, parallel APIs: one for blocking notifiers, one for atomic notifiers, and one for "raw" notifiers (which is really just the old API under a new name). New kinds of data structures are used for the heads of the chains, and new routines are defined for registration, unregistration, and calling a chain. The three APIs are explained in include/linux/notifier.h and their implementation is in kernel/sys.c. With atomic and blocking chains, the implementation guarantees that the chain links will not be corrupted and that chain callers will not get messed up by entries being added or removed. For raw chains the implementation provides no guarantees at all; users of this API must provide their own protections. (The idea was that situations may come up where the assumptions of the atomic and blocking APIs are not appropriate, so it should be possible for users to handle these things in their own way.) There are some limitations, which should not be too hard to live with. For atomic/blocking chains, registration and unregistration must always be done in a process context since the chain is protected by a mutex/rwsem. Also, a callout routine for a non-raw chain must not try to register or unregister entries on its own chain. (This did happen in a couple of places and the code had to be changed to avoid it.) Since atomic chains may be called from within an NMI handler, they cannot use spinlocks for synchronization. Instead we use RCU. The overhead falls almost entirely in the unregister routine, which is okay since unregistration is much less frequent that calling a chain. Here is the list of chains that we adjusted and their classifications. None of them use the raw API, so for the moment it is only a placeholder. ATOMIC CHAINS ------------- arch/i386/kernel/traps.c: i386die_chain arch/ia64/kernel/traps.c: ia64die_chain arch/powerpc/kernel/traps.c: powerpc_die_chain arch/sparc64/kernel/traps.c: sparc64die_chain arch/x86_64/kernel/traps.c: die_chain drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list kernel/panic.c: panic_notifier_list kernel/profile.c: task_free_notifier net/bluetooth/hci_core.c: hci_notifier net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain net/ipv6/addrconf.c: inet6addr_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_chain net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain net/netlink/af_netlink.c: netlink_chain BLOCKING CHAINS --------------- arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain arch/s390/kernel/process.c: idle_chain arch/x86_64/kernel/process.c idle_notifier drivers/base/memory.c: memory_chain drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list drivers/macintosh/adb.c: adb_client_list drivers/macintosh/via-pmu.c sleep_notifier_list drivers/macintosh/via-pmu68k.c sleep_notifier_list drivers/macintosh/windfarm_core.c wf_client_list drivers/usb/core/notify.c usb_notifier_list drivers/video/fbmem.c fb_notifier_list kernel/cpu.c cpu_chain kernel/module.c module_notify_list kernel/profile.c munmap_notifier kernel/profile.c task_exit_notifier kernel/sys.c reboot_notifier_list net/core/dev.c netdev_chain net/decnet/dn_dev.c: dnaddr_chain net/ipv4/devinet.c: inetaddr_chain It's possible that some of these classifications are wrong. If they are, please let us know or submit a patch to fix them. Note that any chain that gets called very frequently should be atomic, because the rwsem read-locking used for blocking chains is very likely to incur cache misses on SMP systems. (However, if the chain's callout routines may sleep then the chain cannot be atomic.) The patch set was written by Alan Stern and Chandra Seetharaman, incorporating material written by Keith Owens and suggestions from Paul McKenney and Andrew Morton. [jes@sgi.com: restructure the notifier chain initialization macros] Signed-off-by:Alan Stern <stern@rowland.harvard.edu> Signed-off-by:
Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by:
Jes Sorensen <jes@sgi.com> Signed-off-by:
-
