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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/drivers/dma
История
Kevin Groeneveld 6b8af9f967 dmaengine: imx-sdma: fix init of uart scripts 
commit a3ae97f4c8 upstream.

Commit b98ce2f4e3 ("dmaengine: imx-sdma: add uart rom script") broke
uart rx on imx5 when using sdma firmware from older Freescale 2.6.35
kernel. In this case reading addr->uartXX_2_mcu_addr was going out of
bounds of the firmware memory and corrupting the uart script addresses.

Simply adding a bounds check before accessing addr->uartXX_2_mcu_addr
does not work as the uartXX_2_mcu_addr members are now beyond the size
of the older firmware and the uart addresses would never be populated
in that case. There are other ways to fix this but overall the logic
seems clearer to me to revert the uartXX_2_mcu_ram_addr structure
entries back to uartXX_2_mcu_addr, change the newer entries to
uartXX_2_mcu_rom_addr and update the logic accordingly.

I have tested this patch on:
1. An i.MX53 system with sdma firmware from Freescale 2.6.35 kernel.
   Without this patch uart rx is broken in this scenario, with the
   patch uart rx is restored.
2. An i.MX6D system with no external sdma firmware. uart is okay with
   or without this patch.
3. An i.MX8MM system using current sdma-imx7d.bin firmware from
   linux-firmware. uart is okay with or without this patch and I
   confirmed the rom version of the uart script is being used which was
   the intention and reason for commit b98ce2f4e3 ("dmaengine:
   imx-sdma: add uart rom script") in the first place.

Fixes: b98ce2f4e3 ("dmaengine: imx-sdma: add uart rom script")
Cc: stable@vger.kernel.org
Signed-off-by: Kevin Groeneveld <kgroeneveld@lenbrook.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/20220410223118.15086-1-kgroeneveld@lenbrook.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-04-27 14:38:58 +02:00
..
bestcomm dmaengine: bestcomm: fix system boot lockups 2021-11-18 19:17:16 +01:00
dw dmaengine: dw: Simplify DT property parser 2021-08-06 19:18:59 +05:30
dw-axi-dmac dmaengine: dw-axi-dmac: Burst length settings 2021-08-02 12:19:52 +05:30
dw-edma dmaengine: dw-edma: Fix unaligned 64bit access 2022-04-27 14:38:52 +02:00
fsl-dpaa2-qdma dmaengine: fsl-dpaa2-qdma: Fix spelling mistake "faile" -> "failed" 2021-08-29 19:14:20 +05:30
hsu dmaengine: hsu: Account transferred bytes 2021-05-31 09:50:39 +05:30
idxd dmaengine: idxd: skip clearing device context when device is read-only 2022-04-27 14:38:54 +02:00
ioat dmaengine: ioatdma: remove unused function missed during dma_v2 removal 2020-11-16 22:42:28 +05:30
ipu dmaengine: ipu: Fix fall-through warning for Clang 2021-07-13 14:38:47 -05:00
lgm dmaengine: INTEL_LDMA should depend on X86 2021-02-01 11:27:14 +05:30
mediatek dmaengine: mediatek:Fix PM usage reference leak of mtk_uart_apdma_alloc_chan_resources 2022-04-27 14:38:52 +02:00
ppc4xx ppc4xx: replace sscanf() by kstrtoul() 2021-07-28 12:40:51 +05:30
ptdma dmaengine: ptdma: Fix the error handling path in pt_core_init() 2022-02-23 12:03:21 +01:00
qcom dmaengine updates for v5.14-rc1 2021-07-05 12:05:13 -07:00
sf-pdma dmaengine updates for v5.14-rc1 2021-07-05 12:05:13 -07:00
sh dmaengine: Revert "dmaengine: shdma: Fix runtime PM imbalance on error" 2022-04-13 20:59:26 +02:00
ti dmaengine: ti: k3-udma: Set r/tchan or rflow to NULL if request fail 2021-11-18 19:17:16 +01:00
xilinx dmaengine: remove debugfs #ifdef 2021-11-25 09:48:41 +01:00
Kconfig dmaengine: ptdma: Initial driver for the AMD PTDMA 2021-08-29 19:14:20 +05:30
Makefile dmaengine: ptdma: Initial driver for the AMD PTDMA 2021-08-29 19:14:20 +05:30
TODO
…
acpi-dma.c dmaengine: acpi: Check for errors from acpi_register_gsi() separately 2021-08-06 21:48:11 +05:30
altera-msgdma.c dmaengine: altera-msgdma: make response port optional 2021-07-28 12:25:10 +05:30
amba-pl08x.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
at_hdmac.c dmaengine: at_hdmac: remove platform data header 2021-01-08 13:57:19 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: remove platform data header 2021-01-08 13:57:19 +05:30
at_xdmac.c dma: at_xdmac: fix a missing check on list iterator 2022-04-27 14:38:58 +02:00
bcm-sba-raid.c dmaengine: bcm-sba-raid: Replace zero-length array with flexible-array member 2020-02-13 20:15:35 +05:30
bcm2835-dma.c dmaengine: bcm2835: Drop local dma_parms 2020-09-11 17:42:12 +05:30
dma-axi-dmac.c dmaengine: axi-dmac: Drop local dma_parms 2020-09-11 17:42:12 +05:30
dma-jz4780.c dmaengine: jz4780: Add support for the JZ4760(B) 2021-01-26 22:45:22 +05:30
dmaengine.c dmaengine: Fix a double free in dma_async_device_register 2021-04-12 15:05:58 +05:30
dmaengine.h dmaengine: dmaengine_desc_callback_valid(): Check for `callback_result` 2021-11-18 19:17:02 +01:00
dmatest.c dmaengine: dmatest: Use dmaengine_get_dma_device 2020-12-11 21:20:08 +05:30
ep93xx_dma.c dmaengine: ep93xx: Prepare clock before using it 2021-08-02 12:27:10 +05:30
fsl-edma-common.c dmaengine: fsl-edma: fix wrong tcd endianness for big-endian cpu 2020-07-06 14:49:22 +05:30
fsl-edma-common.h dmaengine: fsl-edma-common: correct DSIZE_32BYTE 2020-07-06 10:24:49 +05:30
fsl-edma.c dmaengine: fsl-edma: Fix NULL pointer exception in fsl_edma_tx_handler 2020-06-24 13:05:01 +05:30
fsl-qdma.c dmaengine: fsl-qdma: check dma_set_mask return value 2021-05-10 19:51:03 +05:30
fsl_raid.c dmaengine: fsl: remove bad channel update 2020-10-05 09:59:17 +05:30
fsl_raid.h
…
fsldma.c dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function 2021-01-12 18:00:39 +05:30
fsldma.h fsldma: fix very broken 32-bit ppc ioread64 functionality 2020-08-29 13:50:56 -07:00
hisi_dma.c dmaengine: hisi_dma: fix MSI allocate fail when reload hisi_dma 2022-04-08 14:23:47 +02:00
idma64.c dmaengine: idma64: Switch to use __maybe_unused instead of ifdeffery 2020-11-09 17:21:05 +05:30
idma64.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
img-mdc-dma.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 422 2019-06-05 17:37:15 +02:00
imx-dma.c dmaengine: imx-dma: configure the generic DMA type to make it work 2021-08-02 12:31:19 +05:30
imx-sdma.c dmaengine: imx-sdma: fix init of uart scripts 2022-04-27 14:38:58 +02:00
iop-adma.c Merge branch 'topic/tasklet' into next 2020-10-01 10:18:59 +05:30
iop-adma.h treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
k3dma.c dmaengine: k3dma: use the correct HiSilicon copyright 2021-04-12 17:14:53 +05:30
lpc18xx-dmamux.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
mcf-edma.c dmaengine: mcf-edma: Fix NULL pointer exception in mcf_edma_tx_handler 2020-06-24 13:06:15 +05:30
milbeaut-hdmac.c dmaengine: Replace zero-length array with flexible-array 2020-06-15 23:08:30 -05:00
milbeaut-xdmac.c dmaengine: milbeaut-xdmac: Fix a resource leak in the error handling path of the probe function 2020-12-29 10:08:00 +05:30
mmp_pdma.c dmaengine: pxa/mmp: stop referencing config->slave_id 2022-01-27 11:04:13 +01:00
mmp_tdma.c dmaengine: mmp: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
moxart-dma.c dmaengine: moxart-dma: remove redundant irqsave and irqrestore in hardIRQ 2020-11-09 17:25:54 +05:30
mpc512x_dma.c dmaengine: mpc512x: Fix fall-through warning for Clang 2021-07-14 11:05:55 -05:00
mv_xor.c dmaengine: mv_xor: drop of_match_ptr from of_device_id table 2020-11-24 23:02:20 +05:30
mv_xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288 2019-06-05 17:36:37 +02:00
mv_xor_v2.c dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe() 2020-11-24 22:55:15 +05:30
mxs-dma.c dmaengine: mxs-dma: Remove the unused .id_table 2020-11-24 22:55:15 +05:30
nbpfaxi.c dmaengine: nbpfaxi: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
of-dma.c dmaengine: of-dma: router_xlate to return -EPROBE_DEFER if controller is not yet available 2021-07-28 12:54:50 +05:30
owl-dma.c dmaengine: owl-dma: Fix a resource leak in the remove function 2021-01-12 18:00:40 +05:30
pch_dma.c dmaengine: pch_dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:06 +05:30
pl330.c dmaengine: pl330: fix wrong usage of spinlock flags in dma_cyclc 2021-05-10 21:38:46 +05:30
plx_dma.c dmaengine: plx_dma: add a missing put_device() on error path 2021-04-12 15:13:51 +05:30
pxa_dma.c dmaengine: pxa/mmp: stop referencing config->slave_id 2022-01-27 11:04:13 +01:00
s3c24xx-dma.c dmaengine: s3c24xx-dma: fix spelling mistake "to" -> "too" 2020-01-23 17:03:25 +05:30
sa11x0-dma.c dmaengine: sa11x0: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
sprd-dma.c dmaengine: sprd: Add missing MODULE_DEVICE_TABLE 2021-07-15 17:47:38 +05:30
st_fdma.c dmaengine: st_fdma: fix MODULE_ALIAS 2021-12-22 09:32:41 +01:00
st_fdma.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
ste_dma40.c dmaengine: stedma40: add missing iounmap() on error in d40_probe() 2021-05-31 09:47:27 +05:30
ste_dma40_ll.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
ste_dma40_ll.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
stm32-dma.c dmaengine: stm32-dma: avoid 64-bit division in stm32_dma_get_max_width 2021-11-18 19:17:11 +01:00
stm32-dmamux.c dmaengine: stm32-dmamux: Fix PM disable depth imbalance in stm32_dmamux_probe 2022-02-23 12:03:21 +01:00
stm32-mdma.c dmaengine: stm32-mdma: fix STM32_MDMA_CTBR_TSEL_MASK 2022-01-27 11:05:24 +01:00
sun4i-dma.c dmaengine: sun4i: Use list_move_tail instead of list_del/list_add_tail 2021-06-07 17:06:38 +05:30
sun6i-dma.c dmaengine: sun6i: Add support for A100 DMA 2020-11-18 16:28:49 +05:30
tegra20-apb-dma.c dmaengine: tegra20: Fix runtime PM imbalance on error 2021-04-12 15:10:44 +05:30
tegra210-adma.c dmaengine: tegra210-adma: fix pm runtime unbalance 2021-11-18 19:17:03 +01:00
timb_dma.c dmaengine: timb_dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
txx9dmac.c dmaengine: txx9dmac: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
txx9dmac.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
uniphier-mdmac.c dmaengine: uniphier-mdmac: replace zero-length array with flexible-array member 2020-02-13 20:15:57 +05:30
uniphier-xdmac.c dmaengine: uniphier-xdmac: Fix type of address variables 2022-01-27 11:05:23 +01:00
virt-dma.c dmaengine: virt-dma: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30
virt-dma.h dmaengine: virt-dma: Add missing locking around list operations 2019-12-26 10:04:18 +05:30
xgene-dma.c dmaengine: xgene: convert tasklets to use new tasklet_setup() API 2020-09-18 12:19:07 +05:30