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Colin Ian King 0788611c9a dmaengine: dw-axi-dmac: fix null dereference when pointer first is null 
In the unlikely event that axi_desc_get returns a null desc in the
very first iteration of the while-loop the error exit path ends
up calling axi_desc_put on a null pointer 'first' and this causes
a null pointer dereference.  Fix this by adding a null check on
pointer 'first' before calling axi_desc_put.

Addresses-Coverity: ("Explicit null dereference")
Fixes: 1fe20f1b8454 ("dmaengine: Introduce DW AXI DMAC driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-05-21 14:25:52 +05:30
..
bestcomm
treewide: kmalloc() -> kmalloc_array()
2018-06-12 16:19:22 -07:00
dw
Merge branch 'topic/dw' into for-linus
2019-03-12 12:03:47 +05:30
dw-axi-dmac
dmaengine: dw-axi-dmac: fix null dereference when pointer first is null
2019-05-21 14:25:52 +05:30
hsu
dmaengine: hsu: remove dma_slave_config direction usage
2018-10-07 19:25:09 +05:30
ioat
dmaengine: ioatdma: support latency tolerance report (LTR) for v3.4
2019-02-25 12:18:38 +05:30
ipu
treewide: Use array_size() in vmalloc()
2018-06-12 16:19:22 -07:00
mediatek
dmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start
2019-04-26 17:26:38 +05:30
ppc4xx
dmaengine: ppc4xx: fix off-by-one build failure
2018-10-16 20:08:30 +05:30
qcom
dmaengine: qcom_hidma: assign channel cookie correctly
2019-01-20 10:43:34 +05:30
sh
dmaengine updates for v5.2-rc1
2019-05-09 08:51:45 -07:00
ti
dmaengine: cppi41: delete channel from pending list when stop channel
2018-12-05 14:01:59 +05:30
xilinx
dmaengine updates for v5.1-rc1
2019-03-14 09:11:54 -07:00
acpi-dma.c
dmaengine: acpi-dma: align debug message with flow
2016-02-22 09:06:09 +05:30
altera-msgdma.c
dmaengine: altera: Use IRQ-safe spinlock calls in the error paths as well
2017-10-20 11:51:10 +05:30
amba-pl08x.c
dmaengine: pl08x: be fair when re-assigning physical channel
2019-03-25 21:52:28 +05:30
at_hdmac_regs.h
dmaengine: at_hdmac: Remove unnecessary 0x prefixes before %pad
2017-11-08 10:47:04 +05:30
at_hdmac.c
dmaengine: at_hdmac: drop useless LIST_HEAD
2019-01-07 09:49:26 +05:30
at_xdmac.c
dmaengine: at_xdmac: remove a stray bottom half unlock
2019-05-04 16:11:02 +05:30
bcm2835-dma.c
dmaengine updates for v5.2-rc1
2019-05-09 08:51:45 -07:00
bcm-sba-raid.c
dmaengine: bcm-sba-raid: Use dev_get_drvdata()
2019-04-29 10:47:15 +05:30
coh901318_lli.c
dmaengine: coh901318: use NULL for pointer initialization
2016-09-26 22:28:24 +05:30
coh901318.c
dmaengine: coh901318: Remove unused variable
2018-11-26 13:35:52 +05:30
coh901318.h
…
dma-axi-dmac.c
dmaengine: axi-dmac: Enable DMA_INTERLEAVE capability
2019-04-24 11:08:38 +05:30
dma-jz4740.c
dmaengine: jz4740: remove dma_slave_config direction usage
2018-10-07 19:20:14 +05:30
dma-jz4780.c
dmaengine: jz4780: Fix transfers being ACKed too soon
2019-05-21 09:59:58 +05:30
dmaengine.c
mm: replace all open encodings for NUMA_NO_NODE
2019-03-05 21:07:14 -08:00
dmaengine.h
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
dmatest.c
dmaengine updates for v5.1-rc1
2019-03-14 09:11:54 -07:00
ep93xx_dma.c
dmaengine: ep93xx: fix some typo
2018-11-11 14:56:49 +05:30
fsl_raid.c
dmaengine: fsl_raid: make of_device_ids const.
2017-06-29 09:25:28 +05:30
fsl_raid.h
…
fsl-edma-common.c
dmaengine: fsl-edma: dma map slave device address
2019-02-04 12:32:53 +05:30
fsl-edma-common.h
dmaengine: fsl-edma: Fix typo in Vybrid name
2019-05-04 15:50:26 +05:30
fsl-edma.c
dmaengine: fsl-edma: Adjust indentation
2019-05-04 15:50:26 +05:30
fsl-qdma.c
dmaengine: fsl-qdma: Add improvement
2019-05-21 10:05:20 +05:30
fsldma.c
dmaengine: fsldma: Replace DMA_IN/OUT by FSL_DMA_IN/OUT
2019-01-07 09:50:16 +05:30
fsldma.h
dmaengine: fsldma: Add 64-bit I/O accessors for powerpc64
2019-02-04 12:56:54 +05:30
idma64.c
dmaengine: idma64: Move driver name to the header
2019-04-26 16:55:23 +05:30
idma64.h
dmaengine: idma64: Use actual device for DMA transfers
2019-03-21 19:48:26 +05:30
img-mdc-dma.c
dmaengine: img-mdc-dma: Use vchan_terminate_vdesc() instead of desc_free
2017-12-04 22:33:51 +05:30
imx-dma.c
dmaengine updates for v5.1-rc1
2019-03-14 09:11:54 -07:00
imx-sdma.c
dmaengine: imx-sdma: Only check ratio on parts that support 1:1
2019-04-26 17:18:21 +05:30
iop-adma.c
dmaengine: iop-adma: convert callback to helper function
2016-08-08 08:11:39 +05:30
k3dma.c
dmaengine: k3dma: Add support for dma-channel-mask
2019-02-04 14:30:57 +05:30
Kconfig
dmaengine: axi-dmac: extend support for ZynqMP arch
2019-03-25 21:52:28 +05:30
lpc18xx-dmamux.c
dmaengine: add driver for lpc18xx dmamux
2015-08-18 22:12:14 +05:30
Makefile
dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs
2019-01-07 09:50:16 +05:30
mcf-edma.c
dmaengine: fsl-edma: dma map slave device address
2019-02-04 12:32:53 +05:30
mic_x100_dma.c
dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTE
2018-12-17 11:49:41 +05:30
mic_x100_dma.h
dmaengine: Add an enum for the dmaengine alignment constraints
2015-08-05 10:53:52 +05:30
mmp_pdma.c
dmaengine: mmp_pdma: remove dma_slave_config direction usage
2018-11-05 10:32:46 +05:30
mmp_tdma.c
Merge branch 'topic/dmam' into for-linus
2018-10-24 09:15:43 +01:00
moxart-dma.c
treewide: Use struct_size() for kmalloc()-family
2018-06-06 11:15:43 -07:00
mpc512x_dma.c
Merge branch 'topic/err_reporting' into for-linus
2016-10-03 09:17:33 +05:30
mv_xor_v2.c
dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address
2018-07-25 17:53:22 +05:30
mv_xor.c
Merge branch 'topic/mv' into for-linus
2019-03-12 12:04:16 +05:30
mv_xor.h
dmaengine: mv_xor: Add support for scatter-gather DMA mode
2016-11-25 11:16:36 +05:30
mxs-dma.c
cross-tree: phase out dma_zalloc_coherent()
2019-01-08 07:58:37 -05:00
nbpfaxi.c
dmaengine: nbpfaxi: Use dev_get_drvdata()
2019-04-29 10:47:15 +05:30
of-dma.c
dmaengine: Convert to using %pOF instead of full_name
2017-07-19 09:30:44 +05:30
owl-dma.c
dmaengine: owl: Fix warnings generated during build
2018-10-15 22:39:16 +05:30
pch_dma.c
PCI: Move Rohm Vendor ID to generic list
2019-02-01 17:24:52 -06:00
pl330.c
dmaengine: pl330: _stop: clear interrupt status
2019-04-26 16:51:37 +05:30
pxa_dma.c
dmaengine-4.21-rc1
2019-01-01 15:45:48 -08:00
s3c24xx-dma.c
headers: separate linux/mod_devicetable.h from linux/platform_device.h
2018-07-07 17:52:26 +02:00
sa11x0-dma.c
dmaengine: sa11x0: drop useless LIST_HEAD
2019-01-07 09:49:26 +05:30
sirf-dma.c
dmaengine: sirf-dma: remove unused ‘sdesc’
2016-12-12 22:25:22 +05:30
sprd-dma.c
dmaengine: sprd: Change channel id to slave id for DMA cell specifier
2019-02-25 12:11:19 +05:30
st_fdma.c
dmaengine: st_fdma: use struct_size() in kzalloc()
2019-01-07 18:05:22 +05:30
st_fdma.h
dmaengine: st_fdma: Add STMicroelectronics FDMA driver header file
2016-10-18 20:12:06 +05:30
ste_dma40_ll.c
dmaengine: ste_dma40_ll: make d40_width_to_bits static
2016-06-08 08:59:55 +05:30
ste_dma40_ll.h
…
ste_dma40.c
dmaengine: ste_dma40: remove dma_slave_config direction usage
2018-11-24 20:22:21 +05:30
stm32-dma.c
dmaengine: stm32-dma: fix residue calculation in stm32-dma
2019-05-04 15:46:58 +05:30
stm32-dmamux.c
dmaengine: stm32-dmamux: Add PM Runtime support
2019-01-07 09:52:24 +05:30
stm32-mdma.c
dmaengine: stm32-mdma: Revert "dmaengine: stm32-mdma: Add a check on read_u32_array"
2019-03-25 21:56:54 +05:30
sun4i-dma.c
dmaengine: sun4i: fix invalid argument
2017-04-24 09:50:05 +05:30
sun6i-dma.c
dmaengine: sun6i: Retrieve channel count/max request from devicetree
2017-10-23 11:44:03 +05:30
tegra20-apb-dma.c
dmaengine: tegra-apb: Use struct_size() in devm_kzalloc()
2019-01-07 18:07:58 +05:30
tegra210-adma.c
dmaengine: tegra210-adma: restore channel status
2019-05-04 16:13:42 +05:30
timb_dma.c
dmaengine: timb_dma: Use struct_size() in kzalloc()
2019-01-20 10:50:07 +05:30
TODO
…
txx9dmac.c
drivers: Remove explicit invocations of mmiowb()
2019-04-08 12:01:02 +01:00
txx9dmac.h
…
uniphier-mdmac.c
dmaengine: uniphier-mdmac: add UniPhier MIO DMAC driver
2018-11-24 19:42:59 +05:30
virt-dma.c
dmaengine: virt-dma: Add helper to free/reuse a descriptor
2017-12-04 22:33:51 +05:30
virt-dma.h
dmaengine: virt-dma: Support for race free transfer termination
2017-12-04 22:33:51 +05:30
xgene-dma.c
dmaengine: xgene-dma: fix spelling mistake "descripto" -> "descriptor"
2019-04-26 16:57:15 +05:30
zx_dma.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00