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tmp_suning_uos_patched/drivers/i2c/busses
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Ondrej Jirman bca6af4325 i2c: rk3x: Handle a spurious start completion interrupt flag 
[ Upstream commit 02fe0fbd8a21e183687925c3a266ae27dda9840f ]

In a typical read transfer, start completion flag is being set after
read finishes (notice ipd bit 4 being set):

trasnfer poll=0
i2c start
rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10
i2c read
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b
i2c stop
rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 33

This causes I2C transfer being aborted in polled mode from a stop completion
handler:

trasnfer poll=1
i2c start
rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10
i2c read
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 0
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b
i2c stop
rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 13
i2c stop
rk3x-i2c fdd40000.i2c: unexpected irq in STOP: 0x10

Clearing the START flag after read fixes the issue without any obvious
side effects.

This issue was dicovered on RK3566 when adding support for powering
off the RK817 PMIC.

Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-12-17 10:14:40 +01:00
..
i2c-acorn.c
i2c-ali15x3.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-ali1535.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-ali1563.c
i2c-altera.c i2c: altera: cleanup spinlock 2020-05-20 15:28:03 +02:00
i2c-amd-mp2-pci.c i2c: amd-mp2-pci: Fix Oops in amd_mp2_pci_init() error handling 2020-04-30 16:11:41 +02:00
i2c-amd-mp2-plat.c i2c: amd_mp2: handle num is 0 input for i2c_amd_xfer 2020-09-21 11:45:43 +02:00
i2c-amd-mp2.h
i2c-amd756-s4882.c
i2c-amd756.c
i2c-amd8111.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-aspeed.c i2c: aspeed: Mask IRQ status to relevant bits 2020-09-14 08:55:44 +02:00
i2c-at91-core.c i2c: at91: Send bus clear command if SDA is down 2020-05-05 16:37:21 +02:00
i2c-at91-master.c i2c: at91: Move to generic GPIO bus recovery 2020-08-05 11:52:27 +02:00
i2c-at91-slave.c
i2c-at91.h i2c: at91: Move to generic GPIO bus recovery 2020-08-05 11:52:27 +02:00
i2c-au1550.c
i2c-axxia.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-bcm-iproc.c i2c: iproc: handle master read request 2021-03-04 11:37:53 +01:00
i2c-bcm-kona.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-bcm2835.c i2c: bcm2835: Simplify with dev_err_probe() 2020-09-18 23:02:03 +02:00
i2c-brcmstb.c i2c: brcmstb: Fix brcmstd_send_i2c_cmd condition 2021-03-04 11:38:20 +01:00
i2c-cadence.c i2c: cadence: add IRQ check 2021-05-14 09:50:37 +02:00
i2c-cbus-gpio.c i2c: cbus-gpio: set atomic transfer callback 2021-12-08 09:03:23 +01:00
i2c-cht-wc.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-cpm.c i2c: cpm: Fix i2c_ram structure 2020-09-27 15:14:16 +02:00
i2c-cros-ec-tunnel.c i2c: cros-ec-tunnel: Fix ACPI identifier 2020-01-31 09:01:25 +01:00
i2c-davinci.c i2c: busses: convert to devm_platform_ioremap_resource 2020-04-15 12:09:09 +02:00
i2c-designware-baytrail.c i2c: designware: Fix spelling typos in the comments 2020-03-21 19:53:08 +01:00
i2c-designware-common.c i2c: designware: Adjust bus speed independently of ACPI 2020-06-23 21:24:33 +02:00
i2c-designware-core.h i2c: designware: Adjust bus speed independently of ACPI 2020-06-23 21:24:33 +02:00
i2c-designware-master.c i2c: designware: Adjust bus_freq_hz when refuse high speed mode set 2021-04-14 08:42:11 +02:00
i2c-designware-pcidrv.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-designware-platdrv.c i2c: designware: Add device HID for Hygon I2C controller 2020-08-07 20:07:44 +02:00
i2c-designware-slave.c i2c: designware: slave should do WRITE_REQUESTED before WRITE_RECEIVED 2020-11-06 16:02:00 +01:00
i2c-digicolor.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-diolan-u2c.c i2c: drivers: Use generic definitions for bus frequencies 2020-03-24 22:36:59 +01:00
i2c-dln2.c
i2c-efm32.c i2c: efm32: Use devm_platform_get_and_ioremap_resource() 2020-09-29 21:37:46 +02:00
i2c-eg20t.c i2c: eg20t: use generic power management 2020-08-10 15:47:38 +02:00
i2c-elektor.c
i2c-emev2.c i2c: emev2: add IRQ check 2021-05-14 09:50:37 +02:00
i2c-exynos5.c i2c: exynos5: Preserve high speed master code 2021-03-04 11:38:20 +01:00
i2c-fsi.c i2c: fsi: Prevent adding adapters for ports without dts nodes 2020-07-24 21:31:33 +02:00
i2c-gpio.c i2c: gpio: suppress error on probe defer 2020-03-10 12:31:55 +01:00
i2c-highlander.c i2c: highlander: add IRQ check 2021-09-15 09:50:36 +02:00
i2c-hix5hd2.c i2c: hix5hd2: fix IRQ check 2021-09-15 09:50:42 +02:00
i2c-hydra.c
i2c-i801.c i2c: i801: Ensure that SMBHSTSTS_INUSE_STS is cleared when leaving i801_access 2021-06-30 08:47:24 -04:00
i2c-ibm_iic.c
i2c-ibm_iic.h
i2c-icy.c i2c: icy: Fix build with CONFIG_AMIGA_PCMCIA=n 2020-06-07 20:45:24 +02:00
i2c-img-scb.c i2c: img-scb: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:36 +02:00
i2c-imx-lpi2c.c i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:36 +02:00
i2c-imx.c i2c: imx: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:36 +02:00
i2c-iop3xx.c i2c: iop3xx: fix deferred probing 2021-09-15 09:50:42 +02:00
i2c-iop3xx.h
i2c-isch.c
i2c-ismt.c i2c: ismt: Add support for Intel Emmitsburg PCH 2020-09-21 11:58:49 +02:00
i2c-jz4780.c i2c: jz4780: add IRQ check 2021-05-14 09:50:37 +02:00
i2c-kempld.c
i2c-lpc2k.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-meson.c i2c: meson: fixup rate calculation with filter delay 2020-10-08 11:57:23 +02:00
i2c-mlxbf.c i2c: mlxbf: add IRQ check 2021-05-14 09:50:37 +02:00
i2c-mlxcpld.c i2c: mlxcpld: check correct size of maximum RECV_LEN packet 2020-07-04 08:20:38 +02:00
i2c-mpc.c i2c: mpc: implement erratum A-004447 workaround 2021-06-16 12:01:38 +02:00
i2c-mt65xx.c i2c: mediatek: fixing the incorrect register offset 2021-11-18 14:04:22 +01:00
i2c-mt7621.c i2c: drivers: Use generic definitions for bus frequencies 2020-03-24 22:36:59 +01:00
i2c-mv64xxx.c i2c: busses: replace spin_lock_irqsave by spin_lock in hard IRQ 2020-09-29 21:40:03 +02:00
i2c-mxs.c i2c: mxs: use MXS_DMA_CTRL_WAIT4END instead of DMA_CTRL_ACK 2020-09-18 23:11:44 +02:00
i2c-nforce2-s4985.c
i2c-nforce2.c
i2c-nomadik.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-npcm7xx.c i2c: npcm7xx: Clear LAST bit after a failed transaction. 2020-09-27 20:05:27 +02:00
i2c-nvidia-gpu.c i2c: nvidia-gpu: Use put_unaligned_be24() 2020-09-21 12:05:40 +02:00
i2c-ocores.c i2c: ocores: convert to use i2c_new_client_device() 2020-01-15 20:39:26 +01:00
i2c-octeon-core.c i2c: octeon: check correct size of maximum RECV_LEN packet 2021-01-27 11:55:09 +01:00
i2c-octeon-core.h
i2c-octeon-platdrv.c i2c: busses: convert to devm_platform_ioremap_resource 2020-04-15 12:09:09 +02:00
i2c-omap.c i2c: omap: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:37 +02:00
i2c-opal.c treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
i2c-owl.c Merge branch 'i2c/for-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2020-10-21 10:54:05 -07:00
i2c-parport.c i2c: convert SMBus alert setup function to return an ERRPTR 2020-03-10 12:19:52 +01:00
i2c-pasemi.c
i2c-pca-isa.c
i2c-pca-platform.c i2c: busses: convert to devm_platform_get_and_ioremap_resource 2020-04-15 12:12:52 +02:00
i2c-piix4.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-pmcmsp.c Merge branch 'i2c/for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2020-02-07 12:54:13 -08:00
i2c-pnx.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-powermac.c i2c: powermac: use true,false for bool variable 2020-04-30 16:18:30 +02:00
i2c-pxa-pci.c
i2c-pxa.c i2c: pxa: don't error out if there's no pinctrl 2020-06-03 22:37:37 +02:00
i2c-qcom-cci.c i2c: qcom: Fix IRQ error misassignement 2020-12-02 17:05:42 +01:00
i2c-qcom-geni.c i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops 2021-06-10 13:39:29 +02:00
i2c-qup.c i2c: qup: Fix error return code in qup_i2c_bam_schedule_desc() 2020-12-02 16:42:09 +01:00
i2c-rcar.c i2c: rcar: add IRQ check 2021-05-14 09:50:38 +02:00
i2c-riic.c i2c: drivers: Use generic definitions for bus frequencies 2020-03-24 22:36:59 +01:00
i2c-rk3x.c i2c: rk3x: Handle a spurious start completion interrupt flag 2021-12-17 10:14:40 +01:00
i2c-robotfuzz-osif.c i2c: robotfuzz-osif: fix control-request directions 2021-06-30 08:47:25 -04:00
i2c-s3c2410.c i2c: s3c2410: fix IRQ check 2021-09-15 09:50:42 +02:00
i2c-scmi.c
i2c-sh_mobile.c i2c: sh_mobile: Use new clock calculation formulas for RZ/G2E 2021-06-03 09:00:39 +02:00
i2c-sh7760.c i2c: sh7760: fix IRQ error path 2021-05-14 09:50:39 +02:00
i2c-sibyte.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-simtec.c
i2c-sirf.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-sis96x.c
i2c-sis630.c
i2c-sis5595.c
i2c-sprd.c i2c: sprd: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:37 +02:00
i2c-st.c Merge branch 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2020-04-02 15:54:13 -07:00
i2c-stm32.c i2c: stm32: Simplify with dev_err_probe() 2020-09-21 11:45:43 +02:00
i2c-stm32.h
i2c-stm32f4.c i2c: stm32: Simplify with dev_err_probe() 2020-09-21 11:45:43 +02:00
i2c-stm32f7.c i2c: stm32f7: stop dma transfer in case of NACK 2021-12-08 09:03:23 +01:00
i2c-stu300.c i2c: busses: convert to devm_platform_ioremap_resource 2020-04-15 12:09:09 +02:00
i2c-sun6i-p2wi.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-synquacer.c i2c: synquacer: fix deferred probing 2021-09-15 09:50:41 +02:00
i2c-taos-evm.c i2c: taos-evm: convert to use i2c_new_client_device() 2020-01-15 20:39:41 +01:00
i2c-tegra-bpmp.c i2c: bpmp-tegra: Ignore unknown I2C_M flags 2021-01-27 11:54:50 +01:00
i2c-tegra.c i2c: tegra: Create i2c_writesl_vi() to use with VI I2C for filling TX FIFO 2021-02-07 15:37:15 +01:00
i2c-thunderx-pcidrv.c i2c: drivers: Use generic definitions for bus frequencies 2020-03-24 22:36:59 +01:00
i2c-tiny-usb.c
i2c-uniphier-f.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-uniphier.c i2c: busses: remove duplicate dev_err() 2020-04-18 23:42:14 +02:00
i2c-versatile.c
i2c-via.c
i2c-viapro.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-viperboard.c
i2c-wmt.c i2c: drivers: Use generic definitions for bus frequencies 2020-03-24 22:36:59 +01:00
i2c-xgene-slimpro.c
i2c-xiic.c i2c: xiic: fix reference leak when pm_runtime_get_sync fails 2021-05-14 09:50:37 +02:00
i2c-xlp9xx.c i2c: xlp9xx: fix main IRQ check 2021-09-15 09:50:44 +02:00
i2c-xlr.c i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()' 2021-11-18 14:04:25 +01:00
i2c-zx2967.c i2c: busses: convert to devm_platform_ioremap_resource 2020-04-15 12:09:09 +02:00
Kconfig i2c: sprd: depend on COMMON_CLK to fix compile tests 2021-01-27 11:55:11 +01:00
Makefile i2c: mlxbf: I2C SMBus driver for Mellanox BlueField SoC 2020-09-27 19:58:38 +02:00
scx200_acb.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00