Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v4.4.171 2018-06-06T14:46:22+00:00 2018-06-06T14:46:22+00:00 Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com 2015-11-12T04:37:40+00:00 urn:sha1:1cab402e6a4379f6dcfdc47f39ab832d909df277 commit d9f5efade2cfd729138a7cafb46d01044da40f5e upstream. This patch fixes an issue that list_for_each_entry() in usb_dmac_chan_terminate_all() is possible to cause endless loop because this will move own desc to the desc_freed. So, this driver should use list_for_each_entry_safe() instead of list_for_each_entry(). Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Biju Das <biju.das@bp.renesas.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2018-05-30T05:49:02+00:00 Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com 2018-02-14T09:40:12+00:00 urn:sha1:c0c5b3fbf9673e85c55f66e093df70a12d2f7ecd [ Upstream commit d716d9b702bb759dd6fb50804f10a174bd156d71 ] According to R-Car Gen3 Rev.0.80 manual, the DMATCR can be set to 16,777,215 as maximum. So, this patch fixes the max_chunk_size for safety on all of SoCs. Otherwise, a system may hang if the DMATCR is set to 0 on R-Car Gen3. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2017-06-14T11:16:21+00:00 Hiroyuki Yokoyama hiroyuki.yokoyama.vx@renesas.com 2017-05-15T08:49:52+00:00 urn:sha1:3ff231a0d39944810bc8b0371026705f47c3d27c commit 9a445bbb1607d9f14556a532453dd86d1b7e381e upstream. This patch fixes the register definition of AE (Address Error flag) bit. Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver") Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com> [Shimoda: add Fixes and Cc tags in the commit log] Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2016-09-07T06:32:44+00:00 Yoshihiro Shimoda yoshihiro.shimoda.uh@renesas.com 2016-08-04T10:59:41+00:00 urn:sha1:e879dae59e057343a15091f55c54a354623d8142 commit 626d2f07de89bf6be3d7301524d0ab3375b81b9c upstream. The USB-DMAC's interruption happens even if the CHCR.DE is not set to 1 because CHCR.NULLE is set to 1. So, this driver should call usb_dmac_isr_transfer_end() if the DE bit is set to 1 only. Otherwise, the desc is possible to be NULL in the usb_dmac_isr_transfer_end(). Fixes: 0c1c8ff32fa2 ("dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver) Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2015-11-16T03:09:52+00:00 Geert Uytterhoeven geert+renesas@glider.be 2015-10-25T10:09:34+00:00 urn:sha1:bf55555baaf80cdf2cc4176fee02545a07a8ff4a If the call to pm_runtime_get_sync() failed, Runtime PM was left enabled. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2015-11-16T03:09:42+00:00 Geert Uytterhoeven geert+renesas@glider.be 2015-10-25T10:09:33+00:00 urn:sha1:36fa4a530b7798aa85789953b08d94c03fb09fa5 If CONFIG_PREEMPT=y: Unable to handle kernel NULL pointer dereference at virtual address 00000014 pgd = c0003000 [00000014] *pgd=80000040004003, *pmd=00000000 Internal error: Oops: 206 [#1] PREEMPT SMP ARM Modules linked in: CPU: 0 PID: 17 Comm: kworker/0:1 Tainted: G W 4.3.0-rc3-koelsch-022 71-g705498fc5e6a5da8-dirty #1789 Hardware name: Generic R8A7791 (Flattened Device Tree) Workqueue: pm pm_runtime_work task: ef578e40 ti: ef57a000 task.ti: ef57a000 PC is at usb_dmac_chan_halt+0xc/0xc0 LR is at usb_dmac_runtime_suspend+0x28/0x38 pc : [<c023c880>] lr : [<c023c95c>] psr: 80000113 sp : ef57bdf8 ip : 00000008 fp : 00000003 r10: 00000008 r9 : c06ab928 r8 : ef49e810 r7 : 00000000 r6 : 000000ac r5 : ef770010 r4 : 00000000 r3 : 00000000 r2 : 8ffc2b84 r1 : 00000000 r0 : ef770010 Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel Control: 30c5307d Table: 40003000 DAC: fffffffd Process kworker/0:1 (pid: 17, stack limit = 0xef57a210) Stack: (0xef57bdf8 to 0xef57c000) [... [<c023c880>] (usb_dmac_chan_halt) from [<c023c95c>] (usb_dmac_runtime_suspend+0x28/0x38) [<c023c95c>] (usb_dmac_runtime_suspend) from [<c027b25c>] (pm_genpd_runtime_suspend+0x74/0x23c) This happens because usb_dmac_probe() calls pm_runtime_put() before usb_dmac_chan_probe(), leading to the device being suspended before the DMA channels are initialized, causing a NULL pointer dereference. Move the call to pm_runtime_put() to the end of usb_dmac_probe() to fix this. Add a check to usb_dmac_runtime_suspend() to prevent the crash from happening in the error path. Reported-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2015-08-26T02:20:17+00:00 Vinod Koul vinod.koul@intel.com 2015-08-24T08:13:14+00:00 urn:sha1:8a4ce226b9061fe3ab04f6db34d4b2ae645b9f65 Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2015-08-26T02:19:57+00:00 Vinod Koul vinod.koul@intel.com 2015-08-24T08:13:14+00:00 urn:sha1:eeb72a8de8e5471cdce71ea7b2f908e851a73909 Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Vinod Koul <vinod.koul@intel.com> 2015-06-29T16:44:45+00:00 Linus Torvalds torvalds@linux-foundation.org 2015-06-29T16:44:45+00:00 urn:sha1:1bc5e157ed2b4f5b206155fc772d860158acd201 Pull dmaengine updates from Vinod Koul: "This time we have support for few new devices, few new features and odd fixes spread thru the subsystem. New devices added: - support for CSRatlas7 dma controller - Allwinner H3(sun8i) controller - TI DMA crossbar driver on DRA7x - new pxa driver New features added: - memset support is bought back now that we have a user in xdmac controller - interleaved transfers support different source and destination strides - supporting DMA routers and configuration thru DT - support for reusing descriptors - xdmac memset and interleaved transfer support - hdmac support for interleaved transfers - omap-dma support for memcpy Others: - Constify platform_device_id - mv_xor fixes and improvements" * tag 'dmaengine-4.2-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (46 commits) dmaengine: xgene: fix file permission dmaengine: fsl-edma: clear pending interrupts on initialization dmaengine: xdmac: Add memset support Documentation: dmaengine: document DMA_CTRL_ACK dmaengine: virt-dma: don't always free descriptor upon completion dmaengine: Revert "drivers/dma: remove unused support for MEMSET operations" dmaengine: hdmac: Implement interleaved transfers dmaengine: Move icg helpers to global header dmaengine: mv_xor: improve descriptors list handling and reduce locking dmaengine: mv_xor: Enlarge descriptor pool size dmaengine: mv_xor: add support for a38x command in descriptor mode dmaengine: mv_xor: Rename function for consistent naming dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup dmaengine: pl330: fix wording in mcbufsz message dmaengine: sirf: add CSRatlas7 SoC support dmaengine: xgene-dma: Fix "incorrect type in assignement" warnings dmaengine: fix kernel-doc documentation dmaengine: pxa_dma: add support for legacy transition dmaengine: pxa_dma: add debug information dmaengine: pxa: add pxa dmaengine driver ... 2015-06-05T17:54:57+00:00 Mark Brown broonie@kernel.org 2015-06-05T17:54:57+00:00 urn:sha1:a178831a635b1a09316437fcdeb7eca2544a178f