Ferry Toth e1dc4fa4c2 dmaengine: hsu: disable spurious interrupt ... [ Upstream commit 035b73b2b3b2e074a56489a7bf84b6a8012c0e0d ] On Intel Tangier B0 and Anniedale the interrupt line, disregarding to have different numbers, is shared between HSU DMA and UART IPs. Thus on such SoCs we are expecting that IRQ handler is called in UART driver only. hsu_pci_irq was handling the spurious interrupt from HSU DMA by returning immediately. This wastes CPU time and since HSU DMA and HSU UART interrupt occur simultaneously they race to be handled causing delay to the HSU UART interrupt handling. Fix this by disabling the interrupt entirely. Fixes: 4831e0d9054c ("serial: 8250_mid: handle interrupt correctly in DMA case") Signed-off-by: Ferry Toth <ftoth@exalondelft.nl> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20210112223749.97036-1-ftoth@exalondelft.nl Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-04-12 12:52:24 +08:00
..
bestcomm	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dw	dmaengine: dw: Activate FIFO-mode for memory peripherals only	2021-03-16 16:39:25 +08:00
dw-axi-dmac	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dw-edma	dmaengine: dw-edma: Fix use after free in dw_edma_alloc_chunk()	2021-04-12 12:51:18 +08:00
hsu	dmaengine: hsu: disable spurious interrupt	2021-04-12 12:52:24 +08:00
ioat	dmaengine: ioat setting ioat timeout as module parameter	2021-03-16 16:32:31 +08:00
ipu	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mediatek	dmaengine: mediatek: mtk-hsdma: Fix a resource leak in the error handling path of the probe function	2021-04-12 12:51:19 +08:00
ppc4xx	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
qcom	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sh	dmaengine: sh: usb-dmac: set tx_result parameters	2021-03-16 16:31:57 +08:00
ti	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
xilinx	dmaengine: xilinx_dma: fix mixed_enum_type coverity warning	2021-04-12 12:51:19 +08:00
Kconfig	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
Makefile	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
TODO	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
acpi-dma.c	dmaengine: acpi: Put the CSRT table after using it	2021-03-16 16:35:54 +08:00
altera-msgdma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
amba-pl08x.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
at_hdmac.c	dmaengine: at_hdmac: add missing kfree() call in at_dma_xlate()	2021-04-12 12:51:04 +08:00
at_hdmac_regs.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
at_xdmac.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
bcm-sba-raid.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
bcm2835-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
coh901318.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
coh901318.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
coh901318_lli.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dma-axi-dmac.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dma-jz4780.c	dmaengine: dma-jz4780: Fix race in jz4780_dma_tx_status	2021-03-16 16:40:04 +08:00
dmaengine.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dmaengine.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
dmatest.c	dmaengine: dmatest: Check list for emptiness before access its last entry	2021-03-16 16:38:41 +08:00
ep93xx_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fsl-edma-common.c	dmaengine: fsl-edma: fix wrong tcd endianness for big-endian cpu	2021-03-16 16:32:30 +08:00
fsl-edma-common.h	dmaengine: fsl-edma-common: correct DSIZE_32BYTE	2021-03-16 16:32:14 +08:00
fsl-edma.c	dmaengine: fsl-edma: Fix NULL pointer exception in fsl_edma_tx_handler	2021-03-16 16:32:14 +08:00
fsl-qdma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fsl_raid.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fsl_raid.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
fsldma.c	dmaengine: fsldma: Fix a resource leak in an error handling path of the probe function	2021-04-12 12:52:23 +08:00
fsldma.h	fsldma: fix very broken 32-bit ppc ioread64 functionality	2021-03-16 16:35:27 +08:00
idma64.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
idma64.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
img-mdc-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
imx-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
imx-sdma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
iop-adma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
iop-adma.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
k3dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
lpc18xx-dmamux.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mcf-edma.c	dmaengine: mcf-edma: Fix NULL pointer exception in mcf_edma_tx_handler	2021-03-16 16:32:14 +08:00
mic_x100_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mic_x100_dma.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mmp_pdma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mmp_tdma.c	dmaengine: mmp_tdma: Reset channel error on release	2021-03-16 16:27:50 +08:00
moxart-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mpc512x_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mv_xor.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mv_xor.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
mv_xor_v2.c	dmaengine: mv_xor_v2: Fix error return code in mv_xor_v2_probe()	2021-03-16 16:42:52 +08:00
mxs-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
nbpfaxi.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
of-dma.c	dmaengine: of-dma: Fix of_dma_router_xlate's of_dma_xlate handling	2021-03-16 16:35:27 +08:00
owl-dma.c	dmaengine: owl-dma: Fix a resource leak in the remove function	2021-04-12 12:52:23 +08:00
pch_dma.c	dmaengine: pch_dma.c: Avoid data race between probe and irq handler	2021-03-16 16:27:49 +08:00
pl330.c	dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size	2021-03-16 16:41:39 +08:00
pxa_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
s3c24xx-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sa11x0-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sirf-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sprd-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
st_fdma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
st_fdma.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
ste_dma40.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
ste_dma40_ll.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
ste_dma40_ll.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
stm32-dma.c	dmaengine: stm32-dma: use vchan_terminate_vdesc() in .terminate_all	2021-03-16 16:36:55 +08:00
stm32-dmamux.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
stm32-mdma.c	dmaengine: stm32-mdma: use vchan_terminate_vdesc() in .terminate_all	2021-03-16 16:36:54 +08:00
sun4i-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
sun6i-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
tegra20-apb-dma.c	dmaengine: tegra-apb: Prevent race conditions on channel's freeing	2021-03-16 16:36:55 +08:00
tegra210-adma.c	dmaengine: tegra210-adma: Fix runtime PM imbalance on error	2021-03-16 16:32:29 +08:00
timb_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
txx9dmac.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
txx9dmac.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
uniphier-mdmac.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
virt-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
virt-dma.h	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
xgene-dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00
zx_dma.c	Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces.	2021-03-16 11:01:34 +08:00