- 22 9月, 2009 16 次提交
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由 Michael Riepe 提交于
Enable the coretemp driver on an Intel Atom. I'm not sure if the readings are correct, however - on my 330, the driver reports values between 27 and 41 °C (with core1 being about 8°C hotter than core0, given the same load). Maybe the maximum temperature of 100 °C is wrong for Atom CPUs. Cc: Arjan van de Ven <arjan@infradead.org> Cc: Rudolf Marek <r.marek@assembler.cz> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Corrado Zoccolo 提交于
Move the state residency accounting and statistics computation off the hot exit path. On exit, the need to recompute statistics is recorded, and new statistics will be computed when menu_select is called again. The expected effect is to reduce processor wakeup latency from sleep (C-states). We are speaking of few hundreds of cycles reduction out of a several microseconds latency (determined by the hardware transition), so it is difficult to measure. Signed-off-by: NCorrado Zoccolo <czoccolo@gmail.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Adam Belay <abelay@novell.com Acked-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Arjan van de Ven 提交于
Fix the menu idle governor which balances power savings, energy efficiency and performance impact. The reason for a reworked governor is that there have been serious performance issues reported with the existing code on Nehalem server systems. To show this I'm sure Andrew wants to see benchmark results: (benchmark is "fio", "no cstates" is using "idle=poll") no cstates current linux new algorithm 1 disk 107 Mb/s 85 Mb/s 105 Mb/s 2 disks 215 Mb/s 123 Mb/s 209 Mb/s 12 disks 590 Mb/s 320 Mb/s 585 Mb/s In various power benchmark measurements, no degredation was found by our measurement&diagnostics team. Obviously a small percentage more power was used in the "fio" benchmark, due to the much higher performance. While it would be a novel idea to describe the new algorithm in this commit message, I cheaped out and described it in comments in the code instead. [changes since first post: spelling fixes from akpm, review feedback, folded menu-tng into menu.c] Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Cc: Len Brown <lenb@kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Yanmin Zhang <yanmin_zhang@linux.intel.com> Acked-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Kristoffer Ericson 提交于
Clean up the /drivers/pcmcia/sa1100_jornada.c file with respect to formatting. It also changes a build warning into a code comment (since its a pain to watch every build and havent seen any problems with driver in 3.5years). Signed-off-by: NKristoffer Ericson <kristoffer.ericson@gmail.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Roel Kluin 提交于
If count > 0 and dev->rlen == dev->rpos and dev->proto == 0 then we read and write dev->rbuf[-1]; Signed-off-by: NRoel Kluin <roel.kluin@gmail.com> Cc: Harald Welte <laforge@gnumonks.org> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mike Frysinger 提交于
The remove member of the pci_driver yenta_cardbus_driver uses __devexit_p(), so the remove function itself should be marked with __devexit. Even more so considering the probe function is marked with __devinit. Signed-off-by: NMike Frysinger <vapier@gentoo.org> Cc: Daniel Ritz <daniel.ritz-ml@swissonline.ch> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Greg KH <greg@kroah.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jan Beulich 提交于
Since alloc_bootmem() will never return inaccessible (via virtual addressing) memory anyway, using the ..._low() variant only makes sense when the physical address range of the allocated memory must fulfill further constraints, espacially since on 64-bits (or more generally in all cases where the pools the two variants allocate from are than the full available range. Probably the use in alloc_tce_table() could also be eliminated (based on code inspection of pci-calgary_64.c), but that seems too risky given I know nothing about that hardware and have no way to test it. Signed-off-by: NJan Beulich <jbeulich@novell.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jan Beulich 提交于
Sizing of memory allocations shouldn't depend on the number of physical pages found in a system, as that generally includes (perhaps a huge amount of) non-RAM pages. The amount of what actually is usable as storage should instead be used as a basis here. Some of the calculations (i.e. those not intending to use high memory) should likely even use (totalram_pages - totalhigh_pages). Signed-off-by: NJan Beulich <jbeulich@novell.com> Acked-by: NRusty Russell <rusty@rustcorp.com.au> Acked-by: NIngo Molnar <mingo@elte.hu> Cc: Dave Airlie <airlied@linux.ie> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Jeremy Fitzhardinge <jeremy@goop.org> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sage Weil 提交于
The kzalloc mempool does not re-zero items that have been used and then returned to the pool. Manually zero the allocated multipath_bh instead. Acked-by: NNeil Brown <neilb@suse.de> Signed-off-by: NSage Weil <sage@newdream.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KOSAKI Motohiro 提交于
Recently we encountered OOM problems due to memory use of the GEM cache. Generally a large amuont of Shmem/Tmpfs pages tend to create a memory shortage problem. We often use the following calculation to determine the amount of shmem pages: shmem = NR_ACTIVE_ANON + NR_INACTIVE_ANON - NR_ANON_PAGES however the expression does not consider isolated and mlocked pages. This patch adds explicit accounting for pages used by shmem and tmpfs. Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: NRik van Riel <riel@redhat.com> Reviewed-by: NChristoph Lameter <cl@linux-foundation.org> Acked-by: NWu Fengguang <fengguang.wu@intel.com> Cc: David Rientjes <rientjes@google.com> Cc: Hugh Dickins <hugh.dickins@tiscali.co.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 KOSAKI Motohiro 提交于
The amount of memory allocated to kernel stacks can become significant and cause OOM conditions. However, we do not display the amount of memory consumed by stacks. Add code to display the amount of memory used for stacks in /proc/meminfo. Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Reviewed-by: NChristoph Lameter <cl@linux-foundation.org> Reviewed-by: NMinchan Kim <minchan.kim@gmail.com> Reviewed-by: NRik van Riel <riel@redhat.com> Cc: David Rientjes <rientjes@google.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrew Morton 提交于
drivers/mfd/ab3100-core.c:647: error: ab3100_init_settings causes a section type conflict Cc: Anton Vorontsov <avorontsov@ru.mvista.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Andrew Morton 提交于
alpha: drivers/media/dvb/pt1/pt1.c: In function 'pt1_cleanup_tables': drivers/media/dvb/pt1/pt1.c:422: error: implicit declaration of function 'vfree' drivers/media/dvb/pt1/pt1.c: In function 'pt1_init_tables': drivers/media/dvb/pt1/pt1.c:431: error: implicit declaration of function 'vmalloc' drivers/media/dvb/pt1/pt1.c:431: warning: assignment makes pointer from integer without a cast Acked-by: NMauro Carvalho Chehab <mchehab@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 21 9月, 2009 8 次提交
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由 Ingo Molnar 提交于
The build of the dabusb driver broke: drivers/media/video/dabusb.c:758: error: unknown field 'nodename' specified in initializer drivers/media/video/dabusb.c:758: warning: initialization from incompatible pointer type make[3]: *** wait: No child processes. Stop. Due to this commit: e454cea2: Driver-Core: extend devnode callbacks to provide permissions Missing the dabusb driver's dabusb_nodename() callback. Similar issues with the iio/industrialio driver in staging, pointed out and patched by Jean Delvare. Signed-off-by: NIngo Molnar <mingo@elte.hu> Industrialio-parts-by: NJean Delvare <khali@linux-fr.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ingo Molnar 提交于
Bye-bye Performance Counters, welcome Performance Events! In the past few months the perfcounters subsystem has grown out its initial role of counting hardware events, and has become (and is becoming) a much broader generic event enumeration, reporting, logging, monitoring, analysis facility. Naming its core object 'perf_counter' and naming the subsystem 'perfcounters' has become more and more of a misnomer. With pending code like hw-breakpoints support the 'counter' name is less and less appropriate. All in one, we've decided to rename the subsystem to 'performance events' and to propagate this rename through all fields, variables and API names. (in an ABI compatible fashion) The word 'event' is also a bit shorter than 'counter' - which makes it slightly more convenient to write/handle as well. Thanks goes to Stephane Eranian who first observed this misnomer and suggested a rename. User-space tooling and ABI compatibility is not affected - this patch should be function-invariant. (Also, defconfigs were not touched to keep the size down.) This patch has been generated via the following script: FILES=$(find * -type f | grep -vE 'oprofile|[^K]config') sed -i \ -e 's/PERF_EVENT_/PERF_RECORD_/g' \ -e 's/PERF_COUNTER/PERF_EVENT/g' \ -e 's/perf_counter/perf_event/g' \ -e 's/nb_counters/nb_events/g' \ -e 's/swcounter/swevent/g' \ -e 's/tpcounter_event/tp_event/g' \ $FILES for N in $(find . -name perf_counter.[ch]); do M=$(echo $N | sed 's/perf_counter/perf_event/g') mv $N $M done FILES=$(find . -name perf_event.*) sed -i \ -e 's/COUNTER_MASK/REG_MASK/g' \ -e 's/COUNTER/EVENT/g' \ -e 's/\<event\>/event_id/g' \ -e 's/counter/event/g' \ -e 's/Counter/Event/g' \ $FILES ... to keep it as correct as possible. This script can also be used by anyone who has pending perfcounters patches - it converts a Linux kernel tree over to the new naming. We tried to time this change to the point in time where the amount of pending patches is the smallest: the end of the merge window. Namespace clashes were fixed up in a preparatory patch - and some stylistic fallout will be fixed up in a subsequent patch. ( NOTE: 'counters' are still the proper terminology when we deal with hardware registers - and these sed scripts are a bit over-eager in renaming them. I've undone some of that, but in case there's something left where 'counter' would be better than 'event' we can undo that on an individual basis instead of touching an otherwise nicely automated patch. ) Suggested-by: NStephane Eranian <eranian@google.com> Acked-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: NPaul Mackerras <paulus@samba.org> Reviewed-by: NArjan van de Ven <arjan@linux.intel.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: David Howells <dhowells@redhat.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: <linux-arch@vger.kernel.org> LKML-Reference: <new-submission> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Dave Airlie 提交于
VGA arb requires DRM support for non-kms drivers, to turn on/off irqs when disabling the mem/io regions. VGA arb requires KMS support for GPUs where we can turn off VGA decoding. Currently we know how to do this for intel and radeon kms drivers, which allows them to be removed from the arbiter. This patch comes from Fedora rawhide kernel. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Alex Deucher 提交于
This patch makes sure the CP doesn't DMA do VRAM while 2D is active by inserting a CP resync token. todo: port to kms. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Alex Deucher 提交于
RV670 was using the wrong modesetting code. Signed-off-by: NAlex Deucher <alexdeucher@gmail.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Dave Airlie 提交于
https://bugs.freedesktop.org/show_bug.cgi?id=24041 The idle allows rs690 to startup properly. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Dave Airlie 提交于
This resumes my RV730PRO (4650) RV770 (4850) fine. Still researching the RV4550 (RV710), resumes without X fine. Signed-off-by: NDave Airlie <airlied@redhat.com>
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由 Felipe Contreras 提交于
Signed-off-by: NFelipe Contreras <felipe.contreras@gmail.com> Cc: Vegard Nossum <vegardno@ifi.uio.no> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Alok N Kataria <akataria@vmware.com> Cc: "Tan Wei Chong" <wei.chong.tan@intel.com> Cc: Len Brown <len.brown@intel.com> Cc: Lin Ming <ming.m.lin@intel.com> Cc: Bob Moore <robert.moore@intel.com> LKML-Reference: <1253137123-18047-2-git-send-email-felipe.contreras@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 20 9月, 2009 16 次提交
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由 Jaswinder Singh Rajput 提交于
fix the following 'make includecheck' warning: drivers/xen/evtchn.c: linux/errno.h is included more than once. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: chrisw@sous-sol.org Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <1247067749.4382.90.camel@ht.satnam> Acked-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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由 Jaswinder Singh Rajput 提交于
fix the following 'make includecheck' warning: drivers/video/console/vgacon.c: linux/slab.h is included more than once. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Martin Mares <mj@ucw.cz> Cc: mchehab@infradead.org Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <1247067624.4382.88.camel@ht.satnam>
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由 Jaswinder Singh Rajput 提交于
fix the following 'make includecheck' warning: drivers/scsi/ibmvscsi/ibmvscsi.c: asm/firmware.h is included more than once. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <1247067016.4382.78.camel@ht.satnam> Acked-by: NBrian King <brking@linux.vnet.ibm.com>
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由 Jaswinder Singh Rajput 提交于
fix the following 'make includecheck' warning: drivers/scsi/fcoe/libfcoe.c: linux/netdevice.h is included more than once. Signed-off-by: NJaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Sam Ravnborg <sam@ravnborg.org> LKML-Reference: <1247066936.4382.76.camel@ht.satnam>
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由 Wolfram Sang 提交于
As I2C is used by PMICs also, make the busses available early via subsys_initcall(). Signed-off-by: NWolfram Sang <w.sang@pengutronix.de> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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由 Mikael Pettersson 提交于
The mv64xxx_i2c_intr() irq handler in drivers/i2c/busses/i2c-mv64xxx.c is declared as returning 'int', resulting in this compile-time warning: drivers/i2c/busses/i2c-mv64xxx.c: In function 'mv64xxx_i2c_probe': drivers/i2c/busses/i2c-mv64xxx.c:540: warning: passing argument 2 of 'request_irq' from incompatible pointer type Fix: correct the return type to 'irqreturn_t'. Signed-off-by: NMikael Pettersson <mikpe@it.uu.se> Signed-off-by: NBen Dooks <ben-linux@fluff.org>
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由 Alan Stern 提交于
This patch (as1292) modifies the USB serial console driver, to make it compatible with the recent changes to the USB serial core. The most important change is that serial->disc_mutex now has to be unlocked following a successful call to usb_serial_get_by_index(). Other less notable changes include: Use the requested port number instead of port 0 always. Prevent the serial device from being autosuspended. Use the ASYNCB_INITIALIZED flag bit to indicate when the port hardware has been initialized. In spite of these changes, there's no question that the USB serial console code is still a big hack. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1291) removes a bunch of code from serial_open(), things that were rendered unnecessary by earlier patches. A missing spinlock is added to protect port->port.count, which needs to be incremented even if the open fails but not if the tty has gotten a hangup. The test for whether the hardware has been initialized, based on the use count, is replaced by a more transparent test of the ASYNCB_INITIALIZED bit in the port flags. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1290) adds some missing tests. serial_down() isn't supposed to do anything if the hardware hasn't been initialized, and serial_close() isn't supposed to do anything if the tty has gotten a hangup (because serial_hangup() takes care of shutting down the hardware). The patch also updates and adds a few debugging lines. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1289) renames serial_do_down() to serial_down() and serial_do_free() to serial_release(). It also adds a missing call to tty_shutdown() in serial_release(). Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1288) fixes the initialization logic in serial_install(). A new tty always needs to have a termios initialized no matter what, not just in the case where the lower driver will override the termios settings. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1287) makes serial_install() be reponsible for acquiring references to the usb_serial structure and the driver module when a tty is first used. This is more sensible than having serial_open() do it, because a tty can be opened many times whereas it is installed only once, when it is created. (Not to mention that these actions are reversed when the tty is released, not when it is closed.) Finally, it is at install time that the TTY core takes its own reference to the usb_serial module, so it is only fitting that we should act the same way in regard to the lower-level serial driver. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1286) changes usb_serial_get_by_index(). Now the routine will check whether the serial device has been disconnected; if it has then the return value will be NULL. If the device hasn't been disconnected then the routine will return with serial->disc_mutex held, so that the caller can use the structure without fear of racing against driver unloads. This permits the scope of table_mutex in destroy_serial() to be reduced. Instead of protecting the entire function, it suffices to protect the part that actually uses serial_table[], i.e., the call to return_serial(). There's no longer any danger of the refcount being incremented after it reaches 0 (which was the reason for having the large scope previously), because it can't reach 0 until the serial device has been disconnected. Also, the patch makes serial_install() check that serial is non-NULL before attempting to use it. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1285) rearranges the subroutines in usb-serial.c concerned with tty lifetimes into a more logical order: install, open, hangup, close, release. It also updates the formatting of the kerneldoc comments. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Alan Stern 提交于
This patch (as1284) changes the referencing of the usb_serial and usb_serial_port structures in usb-serial.c. It's not feasible to make the port structures keep a reference to the serial structure, because the ports need to remain in existence when serial is released -- quite a few of the drivers expect this. Consequently taking a reference to the port when the device file is open is insufficient; such a reference would not pin serial. To fix this, we now take a reference to serial when the device file is opened. The final put_device() for the ports occurs in destroy_serial(), so that the ports will last as long as they are needed. The patch initializes all the port devices, including those in the unused "fake" ports. This makes the code more uniform because they can all be released in the same way. The error handling code in usb_serial_probe() is much simplified by this approach; instead of freeing everything by hand we can use a single usb_serial_put() call. Also simplified is the port-release mechanism. Instead of being two separate routines, port_release() and port_free() can be combined into one. Signed-off-by: NAlan Stern <stern@rowland.harvard.edu> Cc: stable <stable@kernel.org> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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由 Jiri Slaby 提交于
In moxa specific ASPP_OQUEUE ioctl command, they apparently want only know whether there is space in transmitter hold register. So switch UART_LSR_TEMT to UART_LSR_THRE in that specific case according to the change in 1.14 moxa drivers. Signed-off-by: NJiri Slaby <jirislaby@gmail.com> Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
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