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* dmaengine i.MX dma: initialize dma capabilities outside channel loopSascha Hauer2011-01-311-3/+3
| | | | | | The capabilities are device specific fields, not channel specific fields. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dmaengine i.MX DMA: do not initialize chan_id fieldSascha Hauer2011-01-311-1/+0
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dmaengine i.MX dma: check sg entries for valid addresses and lengthsSascha Hauer2011-01-311-0/+15
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dmaengine i.MX dma: set maximum segment size for our deviceSascha Hauer2011-01-311-0/+4
| | | | Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* dma: imx-dma: fix imxdma_probe error pathAxel Lin2010-12-031-1/+1
| | | | | | | | otherwise, i will be -1 inside the latest iteration of the while loop. Signed-off-by: Axel Lin <axel.lin@gmail.com> Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* dma: imx-dma: fix signedness bugSascha Hauer2010-10-221-1/+3
| | | | | | | | | | | mxdmac->channel was unsigned, so check (imxdmac->channel < 0) for failed imx_dma_request_by_prio() made no sence. Explicitly check signed values. Also, fix uninitialzed use of ret. Signed-off-by: Vasiliy Kulikov <segooon@gmail.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
* dmaengine: Add Freescale i.MX1/21/27 DMA driverSascha Hauer2010-10-071-0/+422
This driver is currently implemented as a user to the old i.MX DMA API. This allows us to convert each user of the old API to the dmaengine API one by one. Once this is done the old DMA driver can be merged into the i.MX dmaengine driver. V2: remove some debug leftovers and unused variables Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Dan Williams <dan.j.williams@intel.com>