- 03 1月, 2009 6 次提交
-
-
由 Joe Peterson 提交于
Fixes the loss of echoed (and other ldisc-generated characters) when the tty is stopped or when the driver output buffer is full (happens frequently for input during continuous program output, such as ^C) and removes the Big Kernel Lock from the N_TTY line discipline. Adds an "echo buffer" to the N_TTY line discipline that handles all ldisc-generated output (including echoed characters). Along with the loss of characters, this also fixes the associated loss of sync between tty output and the ldisc state when characters cannot be immediately written to the tty driver. The echo buffer stores (in addition to characters) state operations that need to be done at the time of character output (like management of the column position). This allows echo to cooperate correctly with program output, since the ldisc state remains consistent with actual characters written. Since the echo buffer code now isolates the tty column state code to the process_out* and process_echoes functions, we can remove the Big Kernel Lock (BKL) and replace it with mutex locks. Highlights are: * Handles echo (and other ldisc output) when tty driver buffer is full - continuous program output can block echo * Saves echo when tty is in stopped state (e.g. ^S) - (e.g.: ^Q will correctly cause held characters to be released for output) * Control character pairs (e.g. "^C") are treated atomically and not split up by interleaved program output * Line discipline state is kept consistent with characters sent to the tty driver * Remove the big kernel lock (BKL) from N_TTY line discipline Signed-off-by: NJoe Peterson <joe@skyrush.com> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Sonic Zhang 提交于
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Sonic Zhang 提交于
Add spin_lock_irqsave() when receive and transfer data. Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Sonic Zhang 提交于
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Graf Yang 提交于
Bug description: The IRDA receiver may can't receiving any more after processed some signals. To duplicate this issue is put three IRDA devices together, one blackfin, two none blackfin, they will detect each other. Let one none blackfin devices irdaping the blackfin devices, when it stopped print out ping information, it is the time that blackfin stoped receiving, the time is random. The related register bit is OK, the other devices is sending data continuously. But no interrupt come. Fixing: I tried Michael's suggestion that request the UARTx error interrupt, and reset the IRDA when found FE error. This method helps much, but it can't completely avoid stop. Reset the IRDA before every time sending the data is more safe. Signed-off-by: NGraf Yang <graf.yang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Sonic Zhang 提交于
Signed-off-by: NSonic Zhang <sonic.zhang@analog.com> Signed-off-by: NBryan Wu <cooloney@kernel.org> Signed-off-by: NAlan Cox <alan@redhat.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 01 1月, 2009 1 次提交
-
-
由 Nick Piggin 提交于
struct dentry is one of the most critical structures in the kernel. So it's sad to see it going neglected. With CONFIG_PROFILING turned on (which is probably the common case at least for distros and kernel developers), sizeof(struct dcache) == 208 here (64-bit). This gives 19 objects per slab. I packed d_mounted into a hole, and took another 4 bytes off the inline name length to take the padding out from the end of the structure. This shinks it to 200 bytes. I could have gone the other way and increased the length to 40, but I'm aiming for a magic number, read on... I then got rid of the d_cookie pointer. This shrinks it to 192 bytes. Rant: why was this ever a good idea? The cookie system should increase its hash size or use a tree or something if lookups are a problem. Also the "fast dcookie lookups" in oprofile should be moved into the dcookie code -- how can oprofile possibly care about the dcookie_mutex? It gets dropped after get_dcookie() returns so it can't be providing any sort of protection. At 192 bytes, 21 objects fit into a 4K page, saving about 3MB on my system with ~140 000 entries allocated. 192 is also a multiple of 64, so we get nice cacheline alignment on 64 and 32 byte line systems -- any given dentry will now require 3 cachelines to touch all fields wheras previously it would require 4. I know the inline name size was chosen quite carefully, however with the reduction in cacheline footprint, it should actually be just about as fast to do a name lookup for a 36 character name as it was before the patch (and faster for other sizes). The memory footprint savings for names which are <= 32 or > 36 bytes long should more than make up for the memory cost for 33-36 byte names. Performance is a feature... Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 31 12月, 2008 6 次提交
-
-
由 Roland Dreier 提交于
Commit f780a9f1 ("mlx4_core: Add ethernet fields to CQE struct") introduced a bug in how wc->sl is set in mlx4_ib_poll_one() -- since cqe->sl_vid is a big-endian value, the shift must be done after converting to host endianness. This bug was found using sparse endianness checking. Signed-off-by: NRoland Dreier <rolandd@cisco.com>
-
由 James Bottomley 提交于
fcoe selects libfc and requires SCSI and PCI (the SCSI requirement is implicitly covered by an enclosing if). Fix them both up so they cannot be configured in an invalid state: make LIBFC select SCSI_FC_ATTRS and make FCOE depend on PCI and select LIBFC. Reported-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Robert Love <robert.w.love@intel.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
-
由 James Bottomley 提交于
cxgb3i requires the cxgb3 net driver, so it selects it. However, cxgb3 has dependencies which the select cannot see. Fix this by separating out the cxgb3 dependencies into a separate hidden config option (CONFIG_CHELSIO_T3_DEPENDS) and make both cxgb3 and cxgb3i depend on it. Reported-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Karen Xie <kxie@chelsio.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
-
由 James Bottomley 提交于
This structure may not be defined if CONFIG_MODULE=n, so never deref it. Change uses of module->name to module_name(module) and corrects some dyslexic printks and docbook comments. Reported-by: NRandy Dunlap <randy.dunlap@oracle.com> Cc: Robert Love <robert.w.love@intel.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
-
由 Karen Xie 提交于
The cxgb3i was using skb->sp pointer for some internal book-keeping which is not related to the secure path. Changed it to use skb->cb[] instead. Reported-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NKaren Xie <kxie@chelsio.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
-
由 Karen Xie 提交于
This patch implements the cxgb3i iscsi connection acceleration for the open-iscsi initiator. The cxgb3i driver offers the iscsi PDU based offload: - digest insertion and verification - payload direct-placement into host memory buffer. Signed-off-by: NKaren Xie <kxie@chelsio.com> Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>
-
- 30 12月, 2008 27 次提交
-
-
由 Julia Lawall 提交于
This set of patches introduces calls to the following set of functions: usb_endpoint_dir_in(epd) usb_endpoint_dir_out(epd) usb_endpoint_is_bulk_in(epd) usb_endpoint_is_bulk_out(epd) usb_endpoint_is_int_in(epd) usb_endpoint_is_int_out(epd) usb_endpoint_is_isoc_in(epd) usb_endpoint_is_isoc_out(epd) usb_endpoint_num(epd) usb_endpoint_type(epd) usb_endpoint_xfer_bulk(epd) usb_endpoint_xfer_control(epd) usb_endpoint_xfer_int(epd) usb_endpoint_xfer_isoc(epd) In some cases, introducing one of these functions is not possible, and it just replaces an explicit integer value by one of the following constants: USB_ENDPOINT_XFER_BULK USB_ENDPOINT_XFER_CONTROL USB_ENDPOINT_XFER_INT USB_ENDPOINT_XFER_ISOC An extract of the semantic patch that makes these changes is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r1@ struct usb_endpoint_descriptor *epd; @@ - ((epd->bmAttributes & \(USB_ENDPOINT_XFERTYPE_MASK\|3\)) == - \(USB_ENDPOINT_XFER_CONTROL\|0\)) + usb_endpoint_xfer_control(epd) @r5@ struct usb_endpoint_descriptor *epd; @@ - ((epd->bEndpointAddress & \(USB_ENDPOINT_DIR_MASK\|0x80\)) == - \(USB_DIR_IN\|0x80\)) + usb_endpoint_dir_in(epd) // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Steven Rostedt 提交于
Impact: clean up RW_LOCK_UNLOCKED is deprecated. This patch replaces it with the __RW_LOCK_UNLOCKED(lock) macro. This change was a little trickier than others due to the macro being used in another macro that fills an array. Signed-off-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Erik Andrén 提交于
As pointed by gcc: drivers/media/video/gspca/stv06xx/stv06xx_hdcs.c: In function ‘hdcs_set_size’: drivers/media/video/gspca/stv06xx/stv06xx_hdcs.c:301: warning: ‘y’ may be used uninitialized in this function Signed-off-by: NErik Andrén <erik.andren@gmail.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
The current code was trying to query the AC97 registers for the vendor information even if it was clearly not a AC97 audio device (resulting in errors in the dmesg output). This was due to a bug in the way we did the check. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
Add additional output formats, which will be useful for the Pinnacle PCTV Ultimate 880e integration with the saa7136. Thanks to Ray Lu from Empia for providing the em2860/em2880 datasheet. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
Noticed when doing the audio support for the Pinnacle PCTV HD Ultimate 808e that the modes were incorrect (the 808e uses I2S in 5 sample mode) Thanks for Ray Lu from Empia for providing the em2860/em2880 datasheet. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
Like the em2874, the em2870 does not have any analog support, so don't bother loading the em28xx-alsa module. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
The Pinnacle 80e cannot be supported since Micronas yanked their driver support for the drx-j chipset at the last minute. Remove the device profile since it cannot work without the drx driver and it being there is only likely to confuse people into thinking the device is supported but not working. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
The DVC 100 profile is redundant since we already have an existing identical profile named "Pinnacle Dazzle DVC 90/DVC 100" Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Devin Heitmueller 提交于
Correct problem introduced during the board refactoring where the XCLK frequency would get zero'd out. The sequence of events was as follows: em28xx_pre_card_setup() called em28xx_set_model() em28xx_set_model() would memcpy to dev->board configuration em28xx_pre_card_setup() would set the dev->board.xclk if not set em28xx_pre_card_setup() would set the XCLK register based on dev->board.xclk ... em28xx_card_setup() would call em28xx_set_model() em28xx_set_model() would memcpy to dev->board configuration (clearing out value of dev->board.xclk set in em28xx_pre_card_setup) ... em28xx_audio_analog_set() sets the XCLK register based on dev->board.xclk (which now contains zero) The change sets the default XCLK and I2C Clock fields in the board definition inside of em28xx_set_model() so that subsequent calls do not cause the values to be overwritten. Signed-off-by: NDevin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
Fix this warning: drivers/media/video/zoran/zoran_card.c:156: warning: ‘zr36067_pci_tbl’ defined but not used Currently, zoran driver relies on a find routine that doesn't use the pci table. Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
drivers/media/dvb/frontends/af9013.c: In function ‘af9013_set_coeff’: drivers/media/dvb/frontends/af9013.c:231: warning: ‘ns_coeff2_8k’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c:230: warning: ‘ns_coeff2_2k’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c:229: warning: ‘ns_coeff1_8193nu’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c:228: warning: ‘ns_coeff1_8192nu’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c:227: warning: ‘ns_coeff1_8191nu’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c:226: warning: ‘ns_coeff1_2048nu’ may be used uninitialized in this function drivers/media/dvb/frontends/af9013.c: In function ‘af9013_update_snr’: drivers/media/dvb/frontends/af9013.c:1012: warning: ‘snr_table’ may be used uninitialized in this function Cc: Antti Palosaari <crope@iki.fi> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
This is needed to sync with the development tree. Probably, a merge conflict were solved by adding this blank line. Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
drivers/media/video/usbvideo/quickcam_messenger.c: In function ‘qcm_sensor_init’: drivers/media/video/usbvideo/quickcam_messenger.c:450: warning: operation on ‘ret’ may be undefined Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
This patch fixes this warning: drivers/media/video/gspca/gspca.c:1811: warning: initialization from incompatible pointer type The reason is that the returned argument should be a long, not an integer. Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Mauro Carvalho Chehab 提交于
drivers/media/dvb/dvb-usb/anysee.c: In function ‘anysee_master_xfer’: drivers/media/dvb/dvb-usb/anysee.c:156: warning: ‘ret’ may be used uninitialized By looking at the function, altrough very unlikely, this might eventually be true if num = 0. So, better to fix the warning by initializing with ret = 0. Cc: Antti Palosaari <crope@iki.fi> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Laurent Pinchart 提交于
Extend the range of supported UVC devices by allowing video output devices matching the following structure: TT_STREAMING -> VC_PROCESSING_UNIT -> VC_EXTENSION_UNIT{0,n} -> OTT_* Video output devices are reported with the V4L2_CAP_VIDEO_OUTPUT capability flag and are subject to the same restrictions as video input devices. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Laurent Pinchart 提交于
Built-in iSight webcams have an interrupt endpoint but spit proprietary data that don't conform to the UVC status endpoint messages. Don't try to handle the interrupt endpoint for those cameras. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Laurent Pinchart 提交于
When the first bulk URB of a video payload contains an erroneous header, or when no V4L2 buffer is available, the whole payload must be dropped. Change the skip logic to drop all bulk URBs until the end of the payload instead of the first one only. Signed-off-by: NLaurent Pinchart <laurent.pinchart@skynet.be> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Guennadi Liakhovetski 提交于
This camera is rather similar to MT9M001, but also has a couple of enhanced features, like pixel binning. create mode 100644 drivers/media/video/mt9t031.c Signed-off-by: NGuennadi Liakhovetski <lg@denx.de> Acked-by: NJean Delvare <khali@linux-fr.org> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
Don't modify driver's state in try_fmt, just verify format acceptability or adjust it to driver's capabilities. Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
priv->scale is checked in start_capture. Therefore, it should be NULL if failing in set_fmt. This patch resolve this problem. Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
This patch adds tw9910 driver that use soc_camera framework. It was tested on SH Migo-r board and mplayer. create mode 100644 drivers/media/video/tw9910.c create mode 100644 include/media/tw9910.h Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Kuninori Morimoto 提交于
Signed-off-by: NKuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-
由 Guennadi Liakhovetski 提交于
Signed-off-by: NGuennadi Liakhovetski <lg@denx.de> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
-