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| author | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-22 07:40:55 -0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-07-22 07:40:55 -0400 |
| commit | 3f98538c7673e5306a126fd3cb7e0a84abc170ee (patch) | |
| tree | d8705fb9e21400a3e90423f52d3bd4b89327d485 /drivers/dma/at_xdmac.c | |
| parent | 22be8233b34f4f468934c5fefcbe6151766fb8f2 (diff) | |
| parent | 5f9e832c137075045d15cd6899ab0505cfb2ca4b (diff) | |
| download | linux-stable-3f98538c7673e5306a126fd3cb7e0a84abc170ee.tar.gz linux-stable-3f98538c7673e5306a126fd3cb7e0a84abc170ee.tar.bz2 linux-stable-3f98538c7673e5306a126fd3cb7e0a84abc170ee.zip | |
Merge tag 'v5.3-rc1' into patchwork
Linus 5.3-rc1
* tag 'v5.3-rc1': (12816 commits)
Linus 5.3-rc1
iommu/amd: fix a crash in iova_magazine_free_pfns
hexagon: switch to generic version of pte allocation
typo fix: it's d_make_root, not d_make_inode...
dt-bindings: pinctrl: stm32: Fix missing 'clocks' property in examples
dt-bindings: iio: ad7124: Fix dtc warnings in example
dt-bindings: iio: avia-hx711: Fix avdd-supply typo in example
dt-bindings: pinctrl: aspeed: Fix AST2500 example errors
dt-bindings: pinctrl: aspeed: Fix 'compatible' schema errors
dt-bindings: riscv: Limit cpus schema to only check RiscV 'cpu' nodes
dt-bindings: Ensure child nodes are of type 'object'
x86/entry/64: Prevent clobbering of saved CR2 value
smp: Warn on function calls from softirq context
KVM: x86: Add fixed counters to PMU filter
KVM: nVMX: do not use dangling shadow VMCS after guest reset
KVM: VMX: dump VMCS on failed entry
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
KVM: s390: Use kvm_vcpu_wake_up in kvm_s390_vcpu_wakeup
KVM: Boost vCPUs that are delivering interrupts
KVM: selftests: Remove superfluous define from vmx.c
...
Diffstat (limited to 'drivers/dma/at_xdmac.c')
| -rw-r--r-- | drivers/dma/at_xdmac.c | 24 |
1 files changed, 8 insertions, 16 deletions
diff --git a/drivers/dma/at_xdmac.c b/drivers/dma/at_xdmac.c index e4ae2ee46d3f..b58ac720d9a1 100644 --- a/drivers/dma/at_xdmac.c +++ b/drivers/dma/at_xdmac.c @@ -1,21 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Driver for the Atmel Extensible DMA Controller (aka XDMAC on AT91 systems) * * Copyright (C) 2014 Atmel Corporation * * Author: Ludovic Desroches <ludovic.desroches@atmel.com> - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 as published by - * the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program. If not, see <http://www.gnu.org/licenses/>. */ #include <asm/barrier.h> @@ -1579,11 +1568,14 @@ static void at_xdmac_handle_cyclic(struct at_xdmac_chan *atchan) struct at_xdmac_desc *desc; struct dma_async_tx_descriptor *txd; - desc = list_first_entry(&atchan->xfers_list, struct at_xdmac_desc, xfer_node); - txd = &desc->tx_dma_desc; + if (!list_empty(&atchan->xfers_list)) { + desc = list_first_entry(&atchan->xfers_list, + struct at_xdmac_desc, xfer_node); + txd = &desc->tx_dma_desc; - if (txd->flags & DMA_PREP_INTERRUPT) - dmaengine_desc_get_callback_invoke(txd, NULL); + if (txd->flags & DMA_PREP_INTERRUPT) + dmaengine_desc_get_callback_invoke(txd, NULL); + } } static void at_xdmac_handle_error(struct at_xdmac_chan *atchan) |