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ryan_chen 3af9be5f5c i2c: aspeed: Avoid i2c interrupt status clear race condition. 
commit c926c87b8e upstream.

In AST2600 there have a slow peripheral bus between CPU and i2c
controller. Therefore GIC i2c interrupt status clear have delay timing,
when CPU issue write clear i2c controller interrupt status. To avoid
this issue, the driver need have read after write clear at i2c ISR.

Fixes: f327c686d3 ("i2c: aspeed: added driver for Aspeed I2C")
Signed-off-by: ryan_chen <ryan_chen@aspeedtech.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[wsa: added Fixes tag]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2020-05-06 08:15:15 +02:00
..
Kconfig Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-09-24 16:48:02 -07:00
Makefile i2c: Add i2c-icy for I2C on m68k/Amiga 2019-08-29 21:04:11 +02:00
i2c-acorn.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-ali15x3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-ali1535.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-ali1563.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428 2019-06-05 17:37:16 +02:00
i2c-altera.c i2c: altera: use proper variable to hold errno 2020-05-02 08:48:47 +02:00
i2c-amd-mp2-pci.c i2c: amd-mp2-pci: Fix Oops in amd_mp2_pci_init() error handling 2020-05-06 08:15:08 +02:00
i2c-amd-mp2-plat.c i2c: Add drivers for the AMD PCIe MP2 I2C controller 2019-03-25 15:21:17 +01:00
i2c-amd-mp2.h i2c: Add drivers for the AMD PCIe MP2 I2C controller 2019-03-25 15:21:17 +01:00
i2c-amd756-s4882.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-amd756.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-amd8111.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-aspeed.c i2c: aspeed: Avoid i2c interrupt status clear race condition. 2020-05-06 08:15:15 +02:00
i2c-at91-core.c i2c: at91: fix clk_offset for sama5d2 2019-08-01 22:24:16 +02:00
i2c-at91-master.c i2c: at91: disable TXRDY interrupt after sending data 2019-08-01 22:24:16 +02:00
i2c-at91-slave.c i2c: at91: added slave mode support 2019-03-24 22:41:51 +01:00
i2c-at91.h i2c: at91: Convert to use struct i2c_timings 2019-03-27 14:09:53 +01:00
i2c-au1550.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-axxia.c i2c: axxia: support slave mode 2019-08-29 21:07:30 +02:00
i2c-bcm-iproc.c i2c: iproc: generate stop event for slave writes 2020-05-06 08:15:13 +02:00
i2c-bcm-kona.c
…
i2c-bcm2835.c i2c: bcm2835: Store pointer to bus clock 2020-01-17 19:48:17 +01:00
i2c-brcmstb.c i2c: brcmstb: remove unused struct member 2019-04-15 13:42:36 +02:00
i2c-cadence.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-cbus-gpio.c i2c: cbus-gpio: Switch to use GPIO descriptors 2019-02-08 22:18:51 +01:00
i2c-cht-wc.c i2c: cht-wc: drop check because i2c_unregister_device() is NULL safe 2019-09-04 23:11:26 +02:00
i2c-cpm.c Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
i2c-cros-ec-tunnel.c mfd / platform: cros_ec: Reorganize platform and mfd includes 2019-09-02 11:33:42 +01:00
i2c-davinci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-designware-baytrail.c More ACPI updates for 4.20-rc1 2018-10-30 09:15:31 -07:00
i2c-designware-common.c i2c: designware: Add support for an interface clock 2019-03-20 17:57:18 +01:00
i2c-designware-core.h i2c: designware: Add support for an interface clock 2019-03-20 17:57:18 +01:00
i2c-designware-master.c i2c: designware: Fix unused variable warning 2019-08-06 22:23:24 +02:00
i2c-designware-pcidrv.c i2c: designware-pci: Fix BUG_ON during device removal 2020-03-18 07:17:53 +01:00
i2c-designware-platdrv.c i2c: designware: platdrv: Remove DPM_FLAG_SMART_SUSPEND flag on BYT and CHT 2020-04-21 09:05:02 +02:00
i2c-designware-slave.c i2c: designware: Synchronize IRQs when unregistering slave client 2019-08-29 20:47:42 +02:00
i2c-digicolor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-diolan-u2c.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-dln2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-efm32.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-eg20t.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
i2c-elektor.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-emev2.c i2c: emev2: avoid race when unregistering slave client 2019-08-14 14:49:43 +02:00
i2c-exynos5.c i2c: exynos5: Remove IRQF_ONESHOT 2019-09-04 23:13:16 +02:00
i2c-fsi.c i2c: fsi: Add of_put_node() before break 2019-09-03 20:33:43 +02:00
i2c-gpio.c i2c: gpio: suppress error on probe defer 2020-03-18 07:17:56 +01:00
i2c-highlander.c i2c: use SPDX identifier for Renesas drivers 2018-08-24 14:49:36 +02:00
i2c-hix5hd2.c i2c: hix5hd2: add missed clk_disable_unprepare in remove 2020-04-01 11:01:56 +02:00
i2c-hydra.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-i801.c i2c: i801: Do not add ICH_RES_IO_SMI for the iTCO_wdt device 2020-04-08 09:08:46 +02:00
i2c-ibm_iic.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-ibm_iic.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-icy.c i2c: icy: Add LTC2990 present on 2019 board revision 2019-08-29 21:05:35 +02:00
i2c-img-scb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-imx-lpi2c.c i2c: imx-lpi2c: use devm_platform_ioremap_resource() to simplify code 2019-08-01 14:49:52 +02:00
i2c-imx.c Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-09-24 16:48:02 -07:00
i2c-iop3xx.c i2c: iop3xx: Fix memory leak in probe error path 2020-01-23 08:22:47 +01:00
i2c-iop3xx.h Merge branch 'i2c/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-07-15 21:10:39 -07:00
i2c-isch.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
i2c-ismt.c i2c: ismt: Remove call to memset after dmam_alloc_coherent 2019-08-01 14:48:55 +02:00
i2c-jz4780.c i2c: jz4780: silence log flood on txabrt 2020-03-05 16:43:45 +01:00
i2c-kempld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 294 2019-06-05 17:36:38 +02:00
i2c-lpc2k.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-meson.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-mlxcpld.c i2c: mlxcpld: Fix wrong initialization order in probe 2019-05-27 21:24:58 +02:00
i2c-mpc.c i2c: mpc: always determine I2C clock prescaler at runtime 2018-01-15 19:19:55 +01:00
i2c-mt65xx.c i2c: mt65xx: fix NULL ptr dereference 2019-10-24 20:52:11 +02:00
i2c-mt7621.c i2c: mt7621: Fix platform_no_drv_owner.cocci warnings 2019-07-06 17:04:32 +02:00
i2c-mv64xxx.c i2c: mv64xxx: Apply errata delay only in standard mode 2018-03-17 21:20:04 +01:00
i2c-mxs.c i2c: mxs: use devm_platform_ioremap_resource() to simplify code 2019-08-01 14:49:36 +02:00
i2c-nforce2-s4985.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-nforce2.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-nomadik.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-nvidia-gpu.c i2c: nvidia-gpu: Handle timeout correctly in gpu_i2c_check_status() 2020-04-01 11:02:10 +02:00
i2c-ocores.c i2c: ocores: use request_any_context_irq() to register IRQ handler 2019-08-29 22:12:19 +02:00
i2c-octeon-core.c i2c: octeon: Prevent error message on bus error 2018-03-02 11:11:15 +01:00
i2c-octeon-core.h i2c: octeon: Prevent error message on bus error 2018-03-02 11:11:15 +01:00
i2c-octeon-platdrv.c
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i2c-omap.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-opal.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 114 2019-05-24 17:39:01 +02:00
i2c-owl.c i2c: Add Actions Semiconductor Owl family S700 I2C support 2019-01-03 20:36:18 +01:00
i2c-parport-light.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-parport.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-parport.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-pasemi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 174 2019-05-30 11:26:41 -07:00
i2c-pca-isa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-pca-platform.c i2c: pca-platform: Use platform_irq_get_optional 2020-04-17 10:49:59 +02:00
i2c-piix4.c Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-09-24 16:48:02 -07:00
i2c-pmcmsp.c i2c: pmcmsp: use core to detect 'no zero length' quirk 2018-08-04 23:25:06 +02:00
i2c-pnx.c i2c: pnx: move header into the driver 2018-05-17 16:27:59 +02:00
i2c-powermac.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-puv3.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-pxa-pci.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 462 2019-06-19 17:09:10 +02:00
i2c-pxa.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-qcom-geni.c i2c: qcom-geni: Disable DMA processing on the Lenovo Yoga C630 2019-09-28 19:47:04 +02:00
i2c-qup.c i2c: qup: use core to detect 'no zero length' quirk 2018-10-05 18:05:08 +02:00
i2c-rcar.c i2c: rcar: avoid race when unregistering slave client 2019-08-14 14:49:36 +02:00
i2c-riic.c i2c: riic: Clear NACK in tend isr 2019-09-28 20:44:12 +02:00
i2c-rk3x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-robotfuzz-osif.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-s3c2410.c i2c: s3c2410: Mark expected switch fall-through 2019-08-01 22:24:16 +02:00
i2c-scmi.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-sh7760.c
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i2c-sh_mobile.c i2c: sh_mobile: use new clock calculation formulas for Gen2 2019-02-08 22:24:50 +01:00
i2c-sibyte.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-simtec.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235 2019-06-19 17:09:07 +02:00
i2c-sirf.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 4 2019-05-21 11:28:40 +02:00
i2c-sis96x.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-sis630.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-sis5595.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-sprd.c i2c: sprd: Validate the return value of clock initialization 2019-08-06 22:54:23 +02:00
i2c-st.c i2c: st: fix missing struct parameter description 2020-04-17 10:49:59 +02:00
i2c-stm32.c i2c: stm32f7: report dma error during probe 2020-01-26 10:01:06 +01:00
i2c-stm32.h i2c: stm32: Use the correct style for SPDX License Identifier 2019-08-14 14:56:54 +02:00
i2c-stm32f4.c i2c-stm32f4: remove redundant initialization of pointer reg 2018-02-27 13:51:05 +01:00
i2c-stm32f7.c i2c: stm32f7: report dma error during probe 2020-01-26 10:01:06 +01:00
i2c-stu300.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 194 2019-05-30 11:29:22 -07:00
i2c-sun6i-p2wi.c
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i2c-synquacer.c i2c: synquacer: Make synquacer_i2c_ops constant 2019-09-03 20:17:27 +02:00
i2c-taos-evm.c Merge branch 'i2c/for-5.4' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux 2019-09-24 16:48:02 -07:00
i2c-tegra-bpmp.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 201 2019-05-30 11:29:52 -07:00
i2c-tegra.c i2c: tegra: Properly disable runtime PM on driver's probe error 2020-01-23 08:22:46 +01:00
i2c-thunderx-pcidrv.c
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i2c-tiny-usb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372 2019-06-05 17:37:10 +02:00
i2c-uniphier-f.c i2c: uniphier(-f): remove all dev_dbg() 2019-09-05 22:34:37 +02:00
i2c-uniphier.c i2c: uniphier(-f): remove all dev_dbg() 2019-09-05 22:34:37 +02:00
i2c-versatile.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
i2c-via.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-viapro.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-viperboard.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
i2c-wmt.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 75 2019-05-24 17:36:47 +02:00
i2c-xgene-slimpro.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
i2c-xiic.c i2c: xiic: Add max_read_len quirk 2019-06-08 00:24:07 +02:00
i2c-xlp9xx.c i2c: xlp9xx: Fix case where SSIF read transaction completes early 2018-08-09 17:41:13 +02:00
i2c-xlr.c i2c: xlr: use core to detect 'no zero length' quirk 2018-08-04 23:25:08 +02:00
i2c-zx2967.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
scx200_acb.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00