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* Merge tag 'dmaengine-4.18-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds2018-06-081-146/+203
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull dmaengine updates from Vinod Koul: - updates to sprd, bam_dma, stm drivers - remove VLAs in dmatest - move TI drivers to their own subdir - switch to SPDX tags for ima/mxs dma drivers - simplify getting .drvdata on bunch of drivers by Wolfram Sang * tag 'dmaengine-4.18-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (32 commits) dmaengine: sprd: Add Spreadtrum DMA configuration dmaengine: sprd: Optimize the sprd_dma_prep_dma_memcpy() dmaengine: imx-dma: Switch to SPDX identifier dmaengine: mxs-dma: Switch to SPDX identifier dmaengine: imx-sdma: Switch to SPDX identifier dmaengine: usb-dmac: Document R8A7799{0,5} bindings dmaengine: qcom: bam_dma: fix some doc warnings. dmaengine: qcom: bam_dma: fix invalid assignment warning dmaengine: sprd: fix an NULL vs IS_ERR() bug dmaengine: sprd: Use devm_ioremap_resource() to map memory dmaengine: sprd: Fix potential NULL dereference in sprd_dma_probe() dmaengine: pl330: flush before wait, and add dev burst support. dmaengine: axi-dmac: Request IRQ with IRQF_SHARED dmaengine: stm32-mdma: fix spelling mistake: "avalaible" -> "available" dmaengine: rcar-dmac: Document R-Car D3 bindings dmaengine: sprd: Move DMA request mode and interrupt type into head file dmaengine: sprd: Define the DMA data width type dmaengine: sprd: Define the DMA transfer step type dmaengine: ti: New directory for Texas Instruments DMA drivers dmaengine: shdmac: Change platform check to CONFIG_ARCH_RENESAS ...
| * dmaengine: sprd: Add Spreadtrum DMA configurationEric Long2018-05-291-0/+182
| | | | | | | | | | | | | | | | | | | | This patch adds the 'device_config' and 'device_prep_slave_sg' interfaces for users to configure DMA, as well as adding one 'struct sprd_dma_config' structure to save Spreadtrum DMA configuration for each DMA channel. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Optimize the sprd_dma_prep_dma_memcpy()Eric Long2018-05-291-128/+39Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is one preparation patch, we can use default DMA configuration to implement the device_prep_dma_memcpy() interface instead of issuing sprd_dma_config(). We will implement one new sprd_dma_config() function with introducing device_prep_slave_sg() interface in following patch. So we can remove the obsolete sprd_dma_config() firstly. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: fix an NULL vs IS_ERR() bugDan Carpenter2018-05-171-2/+2
| | | | | | | | | | | | | | | | | | | | | | We recently cleaned this code up but we need to update the error handling as well. The devm_ioremap_resource() returns error pointers on error, never NULL. Fixes: e7f063ae1a31 ("dmaengine: sprd: Use devm_ioremap_resource() to map memory") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Use devm_ioremap_resource() to map memoryBaolin Wang2018-05-091-4/+1Star
| | | | | | | | | | | | | | | | | | | | Instead of checking the return value of platform_get_resource(), we can use devm_ioremap_resource() which has the NULL pointer check and the memory region requesting. Suggested-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Fix potential NULL dereference in sprd_dma_probe()Wei Yongjun2018-05-071-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | platform_get_resource() may fail and return NULL, so we should better check it's return value to avoid a NULL pointer dereference a bit later in the code. This is detected by Coccinelle semantic patch. @@ expression pdev, res, n, t, e, e1, e2; @@ res = platform_get_resource(pdev, t, n); + if (!res) + return -EINVAL; ... when != res == NULL e = devm_ioremap_nocache(e1, res->start, e2); Fixes: 9b3b8171f7f4 ("dmaengine: sprd: Add Spreadtrum DMA driver") Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Move DMA request mode and interrupt type into head fileEric Long2018-04-271-51/+1Star
| | | | | | | | | | | | | | | | | | This patch will move the Spreadtrum DMA request mode and interrupt type into one head file for user to configure. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Define the DMA data width typeBaolin Wang2018-04-271-3/+11
| | | | | | | | | | | | | | Define the DMA data width type to make code more readable. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
| * dmaengine: sprd: Define the DMA transfer step typeEric Long2018-04-271-6/+13
| | | | | | | | | | | | | | | | Define the DMA transfer step type to make code more readable. Signed-off-by: Eric Long <eric.long@spreadtrum.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vkoul@kernel.org>
* | treewide: Use struct_size() for devm_kmalloc() and friendsKees Cook2018-06-061-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replaces open-coded struct size calculations with struct_size() for devm_*, f2fs_*, and sock_* allocations. Automatically generated (and manually adjusted) from the following Coccinelle script: // Direct reference to struct field. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(*VAR->ELEMENT), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // mr = kzalloc(sizeof(*mr) + m * sizeof(mr->map[0]), GFP_KERNEL); @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; identifier VAR, ELEMENT; expression COUNT; @@ - alloc(HANDLE, sizeof(*VAR) + COUNT * sizeof(VAR->ELEMENT[0]), GFP) + alloc(HANDLE, struct_size(VAR, ELEMENT, COUNT), GFP) // Same pattern, but can't trivially locate the trailing element name, // or variable name. @@ identifier alloc =~ "devm_kmalloc|devm_kzalloc|sock_kmalloc|f2fs_kmalloc|f2fs_kzalloc"; expression HANDLE; expression GFP; expression SOMETHING, COUNT, ELEMENT; @@ - alloc(HANDLE, sizeof(SOMETHING) + COUNT * sizeof(ELEMENT), GFP) + alloc(HANDLE, CHECKME_struct_size(&SOMETHING, ELEMENT, COUNT), GFP) Signed-off-by: Kees Cook <keescook@chromium.org>
* dmaengine: sprd: statify 'sprd_dma_prep_dma_memcpy'Vinod Koul2018-01-151-1/+1
| | | | | | | | | | | Sparse warns that 'sprd_dma_prep_dma_memcpy' should be static so make it static. drivers/dma/sprd-dma.c:713:32: warning: symbol'sprd_dma_prep_dma_memcpy' was not declared. Should it be static? Reviewed-by: Baolin Wang <baolin.wang@linaro.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
* dmaengine: sprd: Add Spreadtrum DMA driverBaolin Wang2017-10-241-0/+988
This patch adds the DMA controller driver for Spreadtrum SC9860 platform. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-15 00:23:02 +0200