summaryrefslogtreecommitdiff
path: root/drivers/dma/timb_dma.c
AgeCommit message (Collapse)AuthorFilesLines
2010-10-19dma/timberdale: simplify conditionalNicolas Kaiser1-1/+1
Simplify: ((a && b) || (!a && !b)) => (a == b) Signed-off-by: Nicolas Kaiser <nikai@nikai.net> Acked-by: Jack Stone <jwjstone@fastmail.fm> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-07-01drivers/dma: Eliminate a NULL pointer dereferenceJulia Lawall1-2/+2
If td_desc is NULL, just skip both kfrees. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E,E1; identifier f; statement S1,S2,S3; @@ if ((E == NULL && ...) || ...) { ... when != if (...) S1 else S2 when != E = E1 * E->f ... when any return ...; } else S3 // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-07-01dma/timb_dma: compile warning on 32 bitDan Carpenter1-2/+2
This silences a compile warning on 32 bit systems: drivers/dma/timb_dma.c:203: warning: cast to pointer from integer of different size Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-05-25kernel-wide: replace USHORT_MAX, SHORT_MAX and SHORT_MIN with USHRT_MAX, ↵Alexey Dobriyan1-1/+1
SHRT_MAX and SHRT_MIN - C99 knows about USHRT_MAX/SHRT_MAX/SHRT_MIN, not USHORT_MAX/SHORT_MAX/SHORT_MIN. - Make SHRT_MIN of type s16, not int, for consistency. [akpm@linux-foundation.org: fix drivers/dma/timb_dma.c] [akpm@linux-foundation.org: fix security/keys/keyring.c] Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Acked-by: WANG Cong <xiyou.wangcong@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-05-17DMAENGINE: extend the control command to include an argLinus Walleij1-1/+2
This adds an argument to the DMAengine control function, so that we can later provide control commands that need some external data passed in through an argument akin to the ioctl() operation prototype. [dan.j.williams@intel.com: fix up some missed conversions] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-29async_tx: use of kzalloc/kfree requires the include of slab.hStephen Rothwell1-0/+1
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26dmaengine: provide helper for setting txstateDan Williams1-5/+1
Simple conditional struct filler to cut out some duplicated code. Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26DMAENGINE: generic channel status v2Linus Walleij1-7/+8
Convert the device_is_tx_complete() operation on the DMA engine to a generic device_tx_status()operation which can return three states, DMA_TX_RUNNING, DMA_TX_COMPLETE, DMA_TX_PAUSED. [dan.j.williams@intel.com: update for timberdale] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Li Yang <leoli@freescale.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Magnus Damm <damm@opensource.se> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Joe Perches <joe@perches.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26DMAENGINE: generic slave control v2Linus Walleij1-2/+7
Convert the device_terminate_all() operation on the DMA engine to a generic device_control() operation which can now optionally support also pausing and resuming DMA on a certain channel. Implemented for the COH 901 318 DMAC as an example. [dan.j.williams@intel.com: update for timberdale] Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: Maciej Sosnowski <maciej.sosnowski@intel.com> Cc: Nicolas Ferre <nicolas.ferre@atmel.com> Cc: Pavel Machek <pavel@ucw.cz> Cc: Li Yang <leoli@freescale.com> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Haavard Skinnemoen <haavard.skinnemoen@atmel.com> Cc: Magnus Damm <damm@opensource.se> Cc: Liam Girdwood <lrg@slimlogic.co.uk> Cc: Joe Perches <joe@perches.com> Cc: Roland Dreier <rdreier@cisco.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-26dma: timb-dma: Update comment and fix compiler warningRichard Röjfors1-2/+5
An incremental patch which clarifies what the spinlock is used for and fixes a compiler warning. Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
2010-03-25dma: Add timb-dmaRichard Röjfors1-0/+853
Adds the support for the DMA engine withing the timberdale FPGA. The DMA channels are strict device to host, or host to device and can not be used for generic memcpy. Signed-off-by: Richard Röjfors <richard.rojfors@pelagicore.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-13 20:32:03 +0000