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2015-04-29dmaengine: increment privatecnt when using dma_get_any_slave_channelChristopher Freeman1-0/+4
Channels allocated via dma_get_any_slave_channel were not increasing the counter tracking private allocations. When these channels were released, privatecnt may erroneously fall to zero. The DMA device would then lose its DMA_PRIVATE cap and fail to allocate future private channels (via private_candidate) as any allocations still outstanding would incorrectly be seen as public allocations. Signed-off-by: Christopher Freeman <cfreeman@nvidia.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-27dmaengine: xgene: Set hardware dependencyJean Delvare1-0/+1
The xgene-dma driver is only useful on X-Gene SoC. Signed-off-by: Jean Delvare <jdelvare@suse.de> Cc: Rameshwar Prasad Sahu <rsahu@apm.com> Cc: Loc Ho <lho@apm.com> Cc: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-27dmaengine: usb-dmac: Protect PM-only functions to kill warningGeert Uytterhoeven1-0/+2
If CONFIG_PM=n: drivers/dma/sh/usb-dmac.c:677: warning: ‘usb_dmac_runtime_suspend’ defined but not used drivers/dma/sh/usb-dmac.c:688: warning: ‘usb_dmac_runtime_resume’ defined but not used Protect the unused functions by #ifdef CONFIG_PM to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-24Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds49-584/+5446
Pull slave-dmaengine updates from Vinod Koul: - new drivers for: - Ingenic JZ4780 controller - APM X-Gene controller - Freescale RaidEngine device - Renesas USB Controller - remove device_alloc_chan_resources dummy handlers - sh driver cleanups for peri peri and related emmc and asoc patches as well - fixes and enhancements spread over the drivers * 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits) dmaengine: dw: don't prompt for DW_DMAC_CORE dmaengine: shdmac: avoid unused variable warnings dmaengine: fix platform_no_drv_owner.cocci warnings dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe() dmaengine: at_xdmac: unlock spin lock before return dmaengine: xgene: devm_ioremap() returns NULL on error dmaengine: xgene: buffer overflow in xgene_dma_init_channels() dmaengine: usb-dmac: Fix dereferencing freed memory 'desc' dmaengine: sa11x0: report slave capabilities to upper layers dmaengine: vdma: Fix compilation warnings dmaengine: fsl_raid: statify fsl_re_chan_probe dmaengine: Driver support for FSL RaidEngine device. dmaengine: xgene_dma_init_ring_mngr() can be static Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes dmaengine: Add support for APM X-Gene SoC DMA engine driver dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver dmaengine: renesas,usb-dmac: Add device tree bindings documentation dmaengine: edma: fixed wrongly initialized data parameter to the edma callback dmaengine: ste_dma40: fix implicit conversion ...
2015-04-22dmaengine: hsu: don't prompt for hsu_core partVinod Koul1-1/+1
HSU_DMA is selected by the HSU_DMA_PCI driver, this should be user selected so remove the user prompt for this Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-22dmaengine: dw: don't prompt for DW_DMAC_COREVinod Koul1-1/+1
DW_DMAC_CORE is slected by PCI or Platform driver, so this symbol shouldn't be user selectable, so remove the prompt Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-21Merge tag 'tty-4.1-rc1' of ↵Linus Torvalds7-0/+759
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty Pull tty/serial updates from Greg KH: "Here's the big tty/serial driver update for 4.1-rc1. It was delayed for a bit due to some questions surrounding some of the console command line parsing changes that are in here. There's still one tiny regression for people who were previously putting multiple console command lines and expecting them all to be ignored for some odd reason, but Peter is working on fixing that. If not, I'll send a revert for the offending patch, but I have faith that Peter can address it. Other than the console work here, there's the usual serial driver updates and changes, and a buch of 8250 reworks to try to make that driver easier to maintain over time, and have it support more devices in the future. All of these have been in linux-next for a while" * tag 'tty-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (119 commits) n_gsm: Drop unneeded cast on netdev_priv sc16is7xx: expose RTS inversion in RS-485 mode serial: 8250_pci: port failed after wakeup from S3 earlycon: 8250: Document kernel command line options earlycon: 8250: Fix command line regression earlycon: Fix __earlycon_table stride tty: clean up the tty time logic a bit serial: 8250_dw: only get the clock rate in one place serial: 8250_dw: remove useless ACPI ID check dmaengine: hsu: move memory allocation to GFP_NOWAIT dmaengine: hsu: remove redundant pieces of code serial: 8250_pci: add Intel Tangier support dmaengine: hsu: add Intel Tangier PCI ID serial: 8250_pci: replace switch-case by formula for Intel MID serial: 8250_pci: replace switch-case by formula tty: cpm_uart: replace CONFIG_8xx by CONFIG_CPM1 serial: jsm: some off by one bugs serial: xuartps: Fix check in console_setup(). serial: xuartps: Get rid of register access macros. serial: xuartps: Fix iobase use. ...
2015-04-21Merge branch 'topic/sh' into for-linusVinod Koul4-403/+53
2015-04-17dmaengine: shdmac: avoid unused variable warningsArnd Bergmann1-2/+2
This driver uses '#ifdef CONFIG_ARCH_SHMOBILE' and '#ifdef CONFIG_ARM' interchangeably in its sh_dmae_probe function, which causes a build warning when building for ARM without also enabling shmobile: dma/sh/shdmac.c: In function sh_dmae_probe: dma/sh/shdmac.c:696:6: warning: unused variable errirq [-Wunused-variable] dma/sh/shdmac.c:695:16: warning: unused variable irqflags [-Wunused-variable] dma/sh/shdmac.c: At top level: dma/sh/shdmac.c:447:20: warning: sh_dmae_err defined but not used [-Wunused-function] This changes all the #ifdef to test for CONFIG_ARCH_SHMOBILE to avoid that warning. An earlier patch from Laurent had fixed the warning for non-ARM case, but it still remained present in ARM randconfig builds. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 52d6a5ee101bf ("DMA: shdma: Fix warnings due to declared but unused symbols") Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: fix platform_no_drv_owner.cocci warningskbuild test robot1-1/+0
drivers/dma/xgene-dma.c:2079:3-8: No need to set .owner here. The core will do it. Remove .owner field if calls are used which set it automatically Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci CC: Rameshwar Prasad Sahu <rsahu@apm.com> Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()Alexey Khoroshilov1-0/+1
Memory allocated for pch_dma is not deallocated in case of failure in pch_dma_probe(). Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: at_xdmac: unlock spin lock before returnNiklas Cassel1-1/+3
Signed-off-by: Niklas Cassel <niklass@axis.com> Acked-by: Ludovic Desroches <ludovic.desroches@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: xgene: devm_ioremap() returns NULL on errorDan Carpenter1-8/+8
The code here is checking for IS_ERR() but devm_ioremap() returns NULL on error and not an error pointer. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: xgene: buffer overflow in xgene_dma_init_channels()Dan Carpenter1-2/+2
We put 9 characters into the 8 character name[] array. Let's make the array bigger and change the sprintf() to snprintf(). Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'Yoshihiro Shimoda1-2/+2
This patch fixes an issue that the usb_dmac_desc_free() is dereferencing freed memory 'desc' because it uses list_for_each_entry(). This function should use list_for_each_entry_safe(). Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-17dmaengine: sa11x0: report slave capabilities to upper layersDmitry Eremin-Solenikov1-0/+6
Fix the following warning by initializing necessary fields in the dma_device structure. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/dma/dmaengine.c:863 dma_async_device_register+0x2b4/0x4f0() this driver doesn't support generic slave capabilities reporting Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 4.0.0-rc5+ #10 Hardware name: Sharp-Collie [<c0105cd8>] (unwind_backtrace) from [<c0103ef8>] (show_stack+0x10/0x14) [<c0103ef8>] (show_stack) from [<c010e9b8>] (warn_slowpath_common+0x74/0xac) [<c010e9b8>] (warn_slowpath_common) from [<c010ea20>] (warn_slowpath_fmt+0x30/0x40) [<c010ea20>] (warn_slowpath_fmt) from [<c02956fc>] (dma_async_device_register+0x2b4/0x4f0) [<c02956fc>] (dma_async_device_register) from [<c0296a9c>] (sa11x0_dma_probe+0x21c/0x358) [<c0296a9c>] (sa11x0_dma_probe) from [<c02c52c0>] (platform_drv_probe+0x30/0x94) [<c02c52c0>] (platform_drv_probe) from [<c02c39bc>] (driver_probe_device+0x84/0x234) [<c02c39bc>] (driver_probe_device) from [<c02c3c4c>] (__driver_attach+0x98/0x9c) [<c02c3c4c>] (__driver_attach) from [<c02c1f9c>] (bus_for_each_dev+0x74/0xa4) [<c02c1f9c>] (bus_for_each_dev) from [<c02c3230>] (bus_add_driver+0x13c/0x1e8) [<c02c3230>] (bus_add_driver) from [<c02c4260>] (driver_register+0x78/0xf8) [<c02c4260>] (driver_register) from [<c0100624>] (do_one_initcall+0x84/0x1f4) [<c0100624>] (do_one_initcall) from [<c0700e1c>] (kernel_init_freeable+0xf8/0x1b4) [<c0700e1c>] (kernel_init_freeable) from [<c040a920>] (kernel_init+0x8/0xf0) [<c040a920>] (kernel_init) from [<c01013a8>] (ret_from_fork+0x14/0x2c) ---[ end trace e188b8fe0e782e75 ]--- Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-15Merge tag 'sound-4.1-rc1' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "There have been major modernization with the standard bus: in ALSA sequencer core and HD-audio. Also, HD-audio receives the regmap support replacing the in-house cache register cache code. These changes shouldn't impact the existing behavior, but rather refactoring. In addition, HD-audio got the code split to a core library part and the "legacy" driver parts. This is a preliminary work for adapting the upcoming ASoC HD-audio driver, and the whole transition is still work in progress, likely finished in 4.1. Along with them, there are many updates in ASoC area as usual, too: lots of cleanups, Intel code shuffling, etc. Here are some highlights: ALSA core: - PCM: the audio timestamp / wallclock enhancement - PCM: fixes in DPCM management - Fixes / cleanups of user-space control element management - Sequencer: modernization using the standard bus HD-audio: - Modernization using the standard bus - Regmap support - Use standard runtime PM for codec power saving - Widget-path based power-saving for IDT, VIA and Realtek codecs - Reorganized sysfs entries for each codec object - More Dell headset support ASoC: - Move of jack registration to the card level - Lots of ASoC cleanups, mainly moving things from the CODEC level to the card level - Support for DAPM routes specified by both the machine driver and DT - Continuing improvements to rcar - pcm512x enhacements - Intel platforms updates - rt5670 updates / fixes - New platforms / devices: some non-DSP Qualcomm platforms, Google's Storm platform, Maxmim MAX98925 CODECs and the Ingenic JZ4780 SoC Misc: - ice1724: Improved ESI W192M support - emu10k1: Emu 1010 fixes/enhancement" * tag 'sound-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (411 commits) ALSA: hda - set GET bit when adding a vendor verb to the codec regmap ALSA: hda/realtek - Enable the ALC292 dock fixup on the Thinkpad T450 ALSA: hda - Fix another race in runtime PM refcounting ALSA: hda - Expose codec type sysfs ALSA: ctl: fix to handle several elements added by one operation for userspace element ASoC: Intel: fix array_size.cocci warnings ASoC: n810: Automatically disconnect non-connected pins ASoC: n810: Consistently pass the card DAPM context to n810_ext_control() ASoC: davinci-evm: Use card DAPM context to access widgets ASoC: mop500_ab8500: Use card DAPM context to access widgets ASoC: wm1133-ev1: Use card DAPM context to access widgets ASoC: atmel: Improve machine driver compile test coverage ASoC: atmel: Add dependency to SND_SOC_I2C_AND_SPI where necessary ALSA: control: Fix a typo of SNDRV_CTL_ELEM_ACCESS_TLV_* with SNDRV_CTL_TLV_OP_* ALSA: usb-audio: Don't attempt to get Microsoft Lifecam Cinema sample rate ASoC: rnsd: fix build regression without CONFIG_OF ALSA: emu10k1: add toggles for E-mu 1010 optical ports ALSA: ctl: fill identical information to return value when adding userspace elements ALSA: ctl: fix a bug to return no identical information in info operation for userspace controls ALSA: ctl: confirm to return all identical information in 'activate' event ...
2015-04-13Merge tag 'staging-4.1-rc1' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging Pull staging driver updates from Greg KH: "Here's the big staging driver patchset for 4.1-rc1. There's a lot of patches here, the Outreachy application period happened during this development cycle, so that means that there was a lot of cleanup patches accepted. Other than the normal coding style and sparse fixes here, there are some driver updates and work toward making some of the drivers into "mergable" shape (like the Unisys drivers.) All of these have been in linux-next for a while" * tag 'staging-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (1214 commits) staging: lustre: orthography & coding style staging: lustre: lnet: lnet: fix error return code staging: lustre: fix sparse warning Revert "Staging: sm750fb: Fix C99 Comments" Staging: rtl8192u: use correct array for debug output staging: rtl8192e: Remove dead code staging: rtl8192e: Comment cleanup (style/format) staging: rtl8192e: Fix indentation in rtllib_rx_auth_resp() staging: rtl8192e: Decrease nesting of rtllib_rx_auth_resp() staging: rtl8192e: Divide rtllib_rx_auth() staging: rtl8192e: Fix PRINTK_WITHOUT_KERN_LEVEL warnings staging: rtl8192e: Fix DO_WHILE_MACRO_WITH_TRAILING_SEMICOLON warning staging: rtl8192e: Fix BRACES warning staging: rtl8192e: Fix LINE_CONTINUATIONS warning staging: rtl8192e: Fix UNNECESSARY_PARENTHESES warnings staging: rtl8192e: remove unused EXPORT_SYMBOL_RSL macro staging: rtl8192e: Fix RETURN_VOID warnings staging: rtl8192e: Fix UNNECESSARY_ELSE warning staging: rtl8723au: Remove unneeded comments staging: rtl8723au: Use __func__ in trace logs ...
2015-04-13Merge tag 'spi-v4.1' of ↵Linus Torvalds4-1760/+0
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi Pull spi updates from Mark Brown: "Only one framework update this time around, a change from Lars-Peter to move full to pm_ops and remove the legacy bus PM ops. Otherwise it's all driver updates: - make the spidev driver complain loudly if registered as spidev with DT rather than with a compatible string, hopefully helping people avoid making that mistake. - error handling and robustness fixes for the Designware and Intel MID drivers from Andy Shevchenko. - substantial performance improvements for the Raspberry Pi driver from Martin Sperl. - several new features for spidev_test from Adrian Remonda and Ian Abbott" * tag 'spi-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (75 commits) spi: bcm2835: enabling polling mode for transfers shorter than 30us spi: bcm2835: transform native-cs to gpio-cs on first spi_setup spi: img-spfi: Control CS lines with GPIO spi: img-spfi: Reset controller after each message spi: img-spfi: Implement a handle_err() callback spi: img-spfi: Setup TRANSACTION register before CONTROL register spi: Make master->handle_err() callback optional to avoid crashes spi: img-spfi: Limit bit clock to 1/4th of input clock spi: img-spfi: Implement a prepare_message() callback spi: fsl-dspi: Add ~50ns delay between cs and sck spi: fsl-dspi: Add cs-sck delays spi: fsl-dspi: Fix clock rate scale values spi: signedness bug in qspi_trigger_transfer_out_int() spi: imx: read back the RX/TX watermark levels earlier spi: spi-bfin5xx: Initialize cr_width in bfin_spi_pump_transfers() spi: bitbang: only toggle bitchanges spi: pxa2xx: missing break in pxa2xx_ssp_get_clk_div() spi: fsl-dspi: Fix clock rate scale values spi: Using Trigger number to transmit/receive data spi: bcm2835: fill FIFO before enabling interrupts to reduce interrupts/message ...
2015-04-12Merge remote-tracking branches 'asoc/topic/dmaengine', 'asoc/topic/fsi', ↵Mark Brown1-0/+1
'asoc/topic/fsl' and 'asoc/topic/fsl-ssi' into asoc-next
2015-04-11Merge remote-tracking branches 'spi/topic/blackfin', 'spi/topic/cadence', ↵Mark Brown4-1760/+0
'spi/topic/dw' and 'spi/topic/err' into spi-next
2015-04-11Revert "dmaengine: Add a warning for drivers not using the generic slave ↵Linus Torvalds1-3/+0
caps retrieval" This reverts commit ecc19d17868be9c9f8f00ed928791533c420f3e0. It added a new warning to try to encourage driver writers to set the device capabities properly, but drivers haven't been updated and in the meantime it just generaters a scary message that users cannot actually do anything about. Warnings like these are appropriate if you actually expect to fix the code that causes them. They are not appropriate for releases. Requested-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-11dmaengine: cppi41: add missing bitfieldsFelipe Balbi1-0/+9
Add missing directions, residue_granularity, srd_addr_widths and dst_addr_widths bitfields. Without those we will see a kernel WARN() when loading musb on am335x devices. Signed-off-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-07Merge 4.0-rc7 into tty-nextGreg Kroah-Hartman5-1/+19
We want the fixes in here as well, also to help out with merge issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-07Merge 4.0-rc7 into staging-nextGreg Kroah-Hartman5-1/+19
We want those fixes (iio primarily) into the -next branch to help with merge and testing issues. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-02dmaengine: fsl_raid: statify fsl_re_chan_probeVinod Koul1-1/+1
Function fsl_re_chan_probe should be declared static, so do it Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02dmaengine: Driver support for FSL RaidEngine device.Xuelin Shi4-0/+1222
The RaidEngine is a new FSL hardware used for Raid5/6 acceration. This patch enables the RaidEngine functionality and provides hardware offloading capability for memcpy, xor and pq computation. It works with async_tx. Signed-off-by: Harninder Rai <harninder.rai@freescale.com> Signed-off-by: Xuelin Shi <xuelin.shi@freescale.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02dmaengine: xgene_dma_init_ring_mngr() can be statickbuild test robot1-1/+1
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02dmaengine: Add support for APM X-Gene SoC DMA engine driverRameshwar Prasad Sahu3-0/+2099
This patch implements the APM X-Gene SoC DMA engine driver. The APM X-Gene SoC DMA engine consists of 4 DMA channels for performing DMA operations. These DMA operations include memory copy, scatter-gather memory copy, raid5 xor, and raid6 p+q offloading. Signed-off-by: Rameshwar Prasad Sahu <rsahu@apm.com> Signed-off-by: Loc Ho <lho@apm.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-02dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driverYoshihiro Shimoda3-0/+920
This DMAC is Renesas USB high-speed module DMA controller that supports slave transfer. This USB-DMAC has similar register sets with R-Car Gen2 DMAC, but the USB-DMAC has specific registers to control the USB transactions. If this code is added into the rcar-dmac driver, it will become unreadable. So, this driver is independent from the rcar-dmac. And, this USB-DMAC uses virt-dma infrastructure. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01dmaengine: edma: fixed wrongly initialized data parameter to the edma callbackPetr Kulhavy1-1/+1
The "data" parameter passed indirectly to the edma_callback() should be edma_chan and not the dma_chan. This bug was so far harmless since the offset of struct dma_chan within struct edma_chan is 0. However as soon as someone changes struct edma_chan this would cause troubles. Signed-off-by: Petr Kulhavy <petr@barix.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01dmaengine: ste_dma40: fix implicit conversionStefan Agner1-2/+4
The function d40_prep_sg takes the type enum dma_transfer_direction as second last parameter. However, the memcpy calls pass DMA_NONE which is of type enum dma_data_direction. Fix this by passing the actual transfer direction DMA_MEM_TO_MEM. This does not change the actual code flow since only the transfer direction DMA_MEM_TO_DEV and DMA_DEV_TO_MEM are actually used in the function d40_prep_sg. Signed-off-by: Stefan Agner <stefan@agner.ch> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-04-01dmaengine: jz4780: add driver for the Ingenic JZ4780 DMA controllerAlex Smith3-0/+888
This patch adds a driver for the DMA controller found in the Ingenic JZ4780. It currently does not implement any support for the programmable firmware feature of the controller - this is not necessary for most uses. It also does not take priority into account when allocating channels, it just allocates the first available channel. This can be implemented later. Signed-off-by: Alex Smith <alex.smith@imgtec.com> Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com> [Updated for dmaengine api changes, Add residue support, couple of minor fixes] Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30dmaengine: moxart-dma: Fix memory leak when stopping a running transferPeter Ujfalusi1-1/+3
The vd->node is removed from the lists when the transfer started so the vchan_get_all_descriptors() will not find it. This results memory leak. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30dmaengine: bcm2835-dma: Fix memory leak when stopping a running transferPeter Ujfalusi1-0/+1
The vd->node is removed from the lists when the transfer started so the vchan_get_all_descriptors() will not find it. This results memory leak. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30dmaengine: omap-dma: Fix memory leak when terminating running transferPeter Ujfalusi1-0/+1
In omap_dma_start_desc the vdesc->node is removed from the virt-dma framework managed lists (to be precise from the desc_issued list). If a terminate_all comes before the transfer finishes the omap_desc will not be freed up because it is not in any of the lists and we stopped the DMA channel so the transfer will not going to complete. There is no special sequence for leaking memory when using cyclic (audio) transfer: with every start and stop of a cyclic transfer the driver leaks struct omap_desc worth of memory. Free up the allocated memory directly in omap_dma_terminate_all() since the framework will not going to do that for us. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> CC: <stable@vger.kernel.org> CC: <linux-omap@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30dmaengine: edma: fix memory leak when terminating running transfersPetr Kulhavy1-0/+7
If edma_terminate_all() was called while a transfer was running (i.e. after edma_execute() but before edma_callback()) the echan->edesc was not freed. This was due to the fact that a running transfer is on none of the vchan lists: desc_submitted, desc_issued, desc_completed (edma_execute() removes it from the desc_issued list), so the vchan_dma_desc_free_list() called at the end of edma_terminate_all() didn't find it and didn't free it. This bug was found on an AM1808 based hardware (very similar to da850evm, however using the second MMC/SD controller), where intense operations on the SD card wasted the device 128MB RAM within a couple of days. Peter Ujfalusi: The issue is even more severe since it affects cyclic (audio) transfers as well. In this case starting/stopping audio will results memory leak. Signed-off-by: Petr Kulhavy <petr@barix.com> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> CC: <stable@vger.kernel.org> CC: <linux-omap@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-30dmaengine: jz4740: Define capabilitiesLars-Peter Clausen1-0/+7
Setup the capabilities of the device/driver, so that users of the DMAengine API can query them. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-26dmaengine: hsu: move memory allocation to GFP_NOWAITAndy Shevchenko1-2/+2
The GFP_ATOMIC is too strict, and DMAEngine documentation make an advice to use GFP_NOWAIT. This patch does the conversion. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26dmaengine: hsu: remove redundant pieces of codeAndy Shevchenko1-11/+2
There are few places where the implemented pieces of code are not needed, i.e.: - direction can't be wrong in hsu_dma_chan_start() - desc->active set to 0 by kzalloc - DMAEngine is NULL-aware when call ->device_alloc_chan_resources() Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-26dmaengine: hsu: add Intel Tangier PCI IDAndy Shevchenko1-0/+1
Intel Tangier is known to have the HSU DMA IP as PCI device 00:05.0. The patch adds the ID as found on Intel Edison board to the PCI device table. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-23Merge 4.0-rc5 into tty-nextGreg Kroah-Hartman5-80/+137
We want the tty/serial fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-23Merge 4.0-rc5 into staging-testingGreg Kroah-Hartman5-80/+137
We want the staging tree fixes that are upstream here as well to prevent merge conflicts from people trying to clean up code. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-18Merge branch 'topic/alloc_removal' into for-linusVinod Koul7-46/+0
2015-03-18dmaengine: sun6i: remove device_alloc_chan_resources handlerVinod Koul1-6/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18dmaengine: sa11x0: remove device_alloc_chan_resources handlerVinod Koul1-6/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18dmaengine: s3c24xx: remove device_alloc_chan_resources handlerVinod Koul1-9/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18dmaengine: k3dma: remove device_alloc_chan_resources handlerVinod Koul1-6/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Acked-by: Zhangfei Gao <zhangfei.gao@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18dmaengine: img-mdc: remove device_alloc_chan_resources handlerVinod Koul1-6/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Acked-by: Andrew Bresticker <abrestic@chromium.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2015-03-18dmaengine: jz4740: remove device_alloc_chan_resources handlerVinod Koul1-6/+0
Now that device_alloc_chan_resources handler in not mandatory, remove dummy implementations Acked-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Vinod Koul <vinod.koul@intel.com>