Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v4.17.1 2018-01-08T10:54:50+00:00 2018-01-08T10:54:50+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2018-01-03T06:42:11+00:00 urn:sha1:0e847d44b3f2f7ab5d4a826f25be9b24a632ce9e Free BD consistent memory while freeing the channel i.e in free_chan_resources. Signed-off-by: Radhey Shyam Pandey <radheys@xilinx.com> Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2018-01-08T10:54:50+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2018-01-03T06:42:10+00:00 urn:sha1:4b597c634a2a8fbc8ecbdaf7c2b4c8bb68cfba20 This patch fixes the below sparse warning in the driver drivers/dma/xilinx/xilinx_dma.c: In function ‘xilinx_vdma_dma_prep_interleaved’: drivers/dma/xilinx/xilinx_dma.c:1614:43: warning: variable ‘prev’ set but not used [-Wunused-but-set-variable] struct xilinx_vdma_tx_segment *segment, *prev = NULL; Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2018-01-08T10:54:50+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2018-01-03T06:42:09+00:00 urn:sha1:48c62fb051af3850e631b573e5393a2b0808ef10 If the hardware is configured for Scatter Gather(SG) mode, and hardware is idle, in the control register SG mode bit must be set to a 0 then back to 1 by the software, to force the CDMA SG engine to use a new value written to the CURDESC_PNTR register, failure to do so could result errors from the dmaengine. This patch updates the same. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:18:08+00:00 Vinod Koul vinod.koul@intel.com 2017-12-18T05:18:05+00:00 urn:sha1:3093186898b06a2eda0bf02329fff6754b6cbfe3 some typos is comments, so fix them up /s/enusres/ensures /s/descripotrs/descriptors /s/Submited/Submitted /s/pollling/polling Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:07+00:00 urn:sha1:c7a03599b58f116362d4ed0e548df7374a563916 This patch updates the probe banner info based on the ip probed. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:06+00:00 urn:sha1:22653af70eed34d18542d6c7e6ae9224d0cd94cd This patch fixes below. ERROR: open brace '{' following function definitions go on the next line +static int xilinx_dma_child_probe(struct xilinx_dma_device *xdev, + struct device_node *node) { Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:05+00:00 urn:sha1:e50a0ad1596f778193ddeca232970c4b7281b50e This patch fixes the kernel doc warnings in the driver. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:04+00:00 urn:sha1:23059408b6a3c0960f4c7e46736228e5cbbe7d52 As per axi dmaengine spec the software must not move the tail pointer to a location that has not been updated (next descriptor field of the h/w descriptor should always point to a valid address). When user submits multiple descriptors on the recv side, with the current driver flow the last buffer descriptor next descriptor field points to a invalid location, resulting the invalid data or errors from the axidma dmaengine. This patch fixes this issue by creating a buffer descritpor chain during channel allocation itself and use those buffer descriptors for the subsequent dma operations. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:03+00:00 urn:sha1:fe0503e19310bddc892ddbfd6dfc8746abbe7261 VDMA engine default frame buffer configuration is cirular mode. in this mode dmaengine continuously circles through h/w configured fstore frame buffers. When vdma h/w is configured for more than one frame. for example h/w is configured for n number of frames, user submits less than n number of frames and triggered the dmaengine using issue_pending API. since the h/w (or) driver default configuraiton is circular mode h/w tries to write/read from an invalid frame buffer resulting errors from the vdma dmaengine. This patch fixes this issue by enabling the park mode as default mode configuration for frame buffers in s/w, so that driver can handle all cases for "k" frames where n%k==0 (n is a multiple of k) by simply replicating the frame pointers. Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2017-12-18T05:14:09+00:00 Kedareswara rao Appana appana.durga.rao@xilinx.com 2017-12-07T05:21:02+00:00 urn:sha1:21e02a3e05cfd3994ca598a5c9c2e1795007b603 Add variable for checking channel idle state to ensure that dma descriptor is not submitted when dmaengine is in progress. This will avoid the polling for a bit in the status register to know dma state in the driver hot path. Reviewed-by: Jose Abreu <joabreu@synopsys.com> Signed-off-by: Kedareswara rao Appana <appanad@xilinx.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>