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Chris Packham a74c313aca i2c: mpc: Use atomic read and fix break condition 
Maxime points out that the polling code in mpc_i2c_isr should use the
_atomic API because it is called in an irq context and that the
behaviour of the MCF bit is that it is 1 when the byte transfer is
complete. All of this means the original code was effectively a
udelay(100).

Fix this by using readb_poll_timeout_atomic() and removing the negation
of the break condition.

Fixes: 4a8ac5e45cda ("i2c: mpc: Poll for MCF")
Reported-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Tested-by: Maxime Bizon <mbizon@freebox.fr>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-12-10 22:27:30 +01:00
..
i2c-acorn.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
i2c-ali15x3.c
i2c: Use separate MODULE_AUTHOR() statements for multiple authors
2020-07-04 08:25:13 +02:00
i2c-ali1535.c
i2c: ali1535: mention that the device should not be disabled
2021-07-02 09:14:46 +02:00
i2c-ali1563.c
i2c: busses: i2c-ali1563: File headers are not good candidates for kernel-doc
2021-05-27 21:29:26 +02:00
i2c-altera.c
i2c: altera: Fix formatting issue in struct and demote unworthy kernel-doc headers
2021-06-03 22:25:24 +02:00
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
i2c: amd8111: Fix coding style issues
2021-04-15 22:24:11 +02:00
i2c-amd-mp2-pci.c
i2c: switch from 'pci_' to 'dma_' API
2021-10-02 09:48:53 +02:00
i2c-amd-mp2-plat.c
i2c: amd-mp2-plat: ACPI: Use ACPI_COMPANION() directly
2021-11-07 14:57:41 +01:00
i2c-amd-mp2.h
i2c: amd-mp2: Remove unused macro
2021-02-01 23:01:50 +01:00
i2c-aspeed.c
i2c: aspeed: disable additional device addresses on ast2[56]xx
2021-05-27 21:44:19 +02:00
i2c-at91-core.c
i2c: at91: mark PM ops as __maybe unused
2021-08-11 15:54:01 +02:00
i2c-at91-master.c
i2c: at91-master: : use proper DMAENGINE API for termination
2021-08-11 15:12:18 +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: remove legacy DMA left overs
2020-11-03 21:34:40 +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: 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-bcm-iproc.c
i2c: iproc: fix race between client unreg and tasklet
2021-08-10 22:40:55 +02:00
i2c-bcm-kona.c
i2c: bcm-kona: Fix return value in probe()
2021-09-29 23:05:05 +02:00
i2c-brcmstb.c
i2c: remove unused 'version.h' include in drivers
2021-04-08 23:12:38 +02:00
i2c-cadence.c
i2c: cadence: Implement save restore
2021-08-25 23:07:05 +02:00
i2c-cbus-gpio.c
i2c: cbus-gpio: set atomic transfer callback
2021-11-29 09:52:10 +01:00
i2c-cht-wc.c
i2c: cht-wc: Replace of_node by NULL
2021-06-20 22:47:24 +02:00
i2c-cp2615.c
i2c: cp2615: check for allocation failure in cp2615_i2c_recv()
2021-06-20 23:13:34 +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: davinci: Simplify with dev_err_probe()
2021-06-23 18:23:55 +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: Use DIV_ROUND_CLOSEST() macro
2021-08-11 16:43:25 +02:00
i2c-designware-core.h
i2c: designware: Fix indentation in the header
2021-08-11 16:43:32 +02:00
i2c-designware-master.c
i2c: busses: i2c-designware-master: Fix misnaming of 'i2c_dw_init_master()'
2021-05-27 21:32:12 +02:00
i2c-designware-pcidrv.c
i2c: designware: Fix return value check in navi_amd_register_client()
2021-04-08 22:47:48 +02:00
i2c-designware-platdrv.c
i2c: designware: Use DIV_ROUND_CLOSEST() macro
2021-08-11 16:43:25 +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: Replace spin_lock_irqsave with spin_lock in hard IRQ
2021-02-12 08:21:57 +01:00
i2c-diolan-u2c.c
i2c: drivers: Use generic definitions for bus frequencies
2020-03-24 22:36:59 +01:00
i2c-dln2.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 372
2019-06-05 17:37:10 +02:00
i2c-eg20t.c
i2c: busses: i2c-eg20t: Fix 'bad line' issue and provide description for 'msgs' param
2021-05-27 21:33:10 +02:00
i2c-elektor.c
Merge branch 'i2c/for-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2021-02-22 09:02:24 -08:00
i2c-emev2.c
i2c: emev2: add IRQ check
2021-04-14 10:20:00 +02:00
i2c-exynos5.c
i2c: exynos5: correct top kerneldoc
2021-04-06 22:32:33 +02:00
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: fix MODULE_LICENCE
2021-01-05 17:30:45 +01:00
i2c-highlander.c
i2c: highlander: add IRQ check
2021-08-03 22:48:39 +02:00
i2c-hisi.c
i2c: add support for HiSilicon I2C controller
2021-04-10 21:54:05 +02:00
i2c-hix5hd2.c
i2c: hix5hd2: fix IRQ check
2021-08-19 19:18:24 +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: Fix interrupt storm from SMB_ALERT signal
2021-11-23 10:43:50 +01:00
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: Remove unused variable new_fwnode in icy_probe()
2021-05-25 21:21:32 +02:00
i2c-img-scb.c
i2c: img-scb: fix reference leak when pm_runtime_get_sync fails
2021-04-14 09:49:06 +02:00
i2c-imx-lpi2c.c
i2c: imx-lpi2c: fix reference leak when pm_runtime_get_sync fails
2021-04-14 09:49:09 +02:00
i2c-imx.c
i2c: imx: : use proper DMAENGINE API for termination
2021-08-11 15:15:30 +02:00
i2c-iop3xx.c
i2c: iop3xx: fix deferred probing
2021-08-19 19:18:17 +02:00
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: switch from 'pci_' to 'dma_' API
2021-10-02 09:48:53 +02:00
i2c-jz4780.c
Merge branch 'i2c/for-5.13' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
2021-04-30 13:01:02 -07:00
i2c-kempld.c
i2c: kempld: deprecate class based instantiation
2021-09-29 23:07:02 +02:00
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
2021-04-14 10:20:45 +02:00
i2c-mlxcpld.c
i2c: mlxcpld: Allow flexible polling time setting for I2C transactions
2021-10-11 12:32:00 +02:00
i2c-mpc.c
i2c: mpc: Use atomic read and fix break condition
2021-12-10 22:27:30 +01:00
i2c-mt65xx.c
i2c: mediatek: Dump i2c/dma register when a timeout occurs
2021-10-11 12:40:05 +02:00
i2c-mt7621.c
i2c: drivers: Use generic definitions for bus frequencies
2020-03-24 22:36:59 +01:00
i2c-mv64xxx.c
i2c: mv64xxx: Fix random system lock caused by runtime PM
2021-04-15 22:13:19 +02:00
i2c-mxs.c
i2c: mxs: : use proper DMAENGINE API for termination
2021-08-11 15:16:01 +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
i2c: busses: i2c-nomadik: Fix formatting issue pertaining to 'timeout'
2021-05-27 21:27:48 +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: Constify the software node
2021-04-10 21:43:01 +02:00
i2c-ocores.c
i2c: busses: i2c-ocores: Place the expected function names into the documentation headers
2021-05-27 21:33:41 +02:00
i2c-octeon-core.c
i2c: octeon: check correct size of maximum RECV_LEN packet
2021-01-17 12:26:55 +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
2021-04-14 09:49:17 +02:00
i2c-opal.c
treewide: Use fallthrough pseudo-keyword
2020-08-23 17:36:59 -05:00
i2c-owl.c
i2c: owl: Add compatible for the Actions Semi S500 I2C controller
2020-12-09 21:23:21 +01:00
i2c-parport.c
i2c: parport: Switch to use module_parport_driver()
2021-08-10 23:07:37 +02:00
i2c-pasemi-core.c
i2c: pasemi: Set enable bit for Apple variant
2021-10-11 11:45:56 +02:00
i2c-pasemi-core.h
i2c: pasemi: Set enable bit for Apple variant
2021-10-11 11:45:56 +02:00
i2c-pasemi-pci.c
i2c: pasemi: Set enable bit for Apple variant
2021-10-11 11:45:56 +02:00
i2c-pasemi-platform.c
i2c: pasemi: Add Apple platform driver
2021-10-11 11:45:48 +02:00
i2c-pca-isa.c
isa: Make the remove callback for isa drivers return void
2021-01-26 07:42:27 +01:00
i2c-pca-platform.c
i2c: pca-platform: drop two members from driver data that are assigned to only
2020-12-02 21:29:31 +01:00
i2c-piix4.c
i2c: Use separate MODULE_AUTHOR() statements for multiple authors
2020-07-04 08:25:13 +02:00
i2c-pnx.c
i2c: busses: i2c-pnx: Provide descriptions for 'alg_data' data structure
2021-05-27 21:34:08 +02:00
i2c-powermac.c
i2c: powermac: remove uncertainty about SMBUS_BLOCK transfers
2021-03-18 11:59:57 +01:00
i2c-pxa-pci.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 462
2019-06-19 17:09:10 +02:00
i2c-pxa.c
i2c: pxa: drop unneeded MODULE_ALIAS
2021-10-02 09:32:06 +02:00
i2c-qcom-cci.c
i2c: qcom-cci: add sm8250 compatible
2021-05-25 21:14:04 +02:00
i2c-qcom-geni.c
i2c: qcom-geni: Suspend and resume the bus during SYSTEM_SLEEP_PM ops
2021-06-04 22:32:58 +02:00
i2c-qup.c
i2c: qup: move to use request_irq by IRQF_NO_AUTOEN flag
2021-10-29 21:57:33 +02:00
i2c-rcar.c
i2c: rcar: enable interrupts before starting transfer
2021-09-29 23:02:59 +02:00
i2c-riic.c
i2c: riic: Add RZ/G2L support
2021-06-20 22:40:44 +02:00
i2c-rk3x.c
i2c: rk3x: Handle a spurious start completion interrupt flag
2021-11-30 22:38:15 +01:00
i2c-robotfuzz-osif.c
i2c: robotfuzz-osif: fix control-request directions
2021-06-24 22:08:00 +02:00
i2c-s3c2410.c
i2c: s3c2410: fix IRQ check
2021-08-19 19:18:24 +02:00
i2c-scmi.c
i2c: i2c-scmi: Drop unused ACPI_MODULE_NAME definition
2021-03-18 12:11:45 +01:00
i2c-sh7760.c
i2c: sh7760: fix IRQ error path
2021-04-17 22:00:58 +02:00
i2c-sh_mobile.c
i2c: sh_mobile: : use proper DMAENGINE API for termination
2021-08-11 15:22:24 +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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 235
2019-06-19 17:09:07 +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: fix reference leak when pm_runtime_get_sync fails
2021-04-14 09:49:20 +02:00
i2c-st.c
i2c: busses: i2c-st: Fix copy/paste function misnaming issues
2021-05-27 21:39:35 +02:00
i2c-stm32.c
i2c: stm32: Simplify with dev_err_probe()
2020-09-21 11:45:43 +02:00
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: busses: i2c-stm32f4: Remove incorrectly placed ' ' from function name
2021-05-27 21:39:57 +02:00
i2c-stm32f7.c
i2c: stm32f7: use proper DMAENGINE API for termination
2021-11-30 10:22:14 +01:00
i2c-sun6i-p2wi.c
i2c: sun6i-pw2i: Prefer strscpy over strlcpy
2021-08-17 21:37:40 +02:00
i2c-synquacer.c
i2c: synquacer: fix deferred probing
2021-08-17 21:41:32 +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: tegra-bpmp: Demote kernel-doc abuses
2021-06-03 22:31:42 +02:00
i2c-tegra.c
i2c: tegra: Ensure that device is suspended before driver is removed
2021-10-29 21:51:31 +02:00
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: tiny-usb: Correct I2C fault codes.
2020-01-06 15:40:43 +01:00
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
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
i2c: busses: Use fallthrough pseudo-keyword
2020-07-23 22:04:08 +02:00
i2c-viperboard.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
i2c-virtio.c
i2c: virtio: fix completion handling
2021-12-09 09:49:58 +01:00
i2c-wmt.c
i2c: drivers: Use generic definitions for bus frequencies
2020-03-24 22:36:59 +01:00
i2c-xgene-slimpro.c
i2c: xgene-slimpro: Fix wrong pointer passed to PTR_ERR()
2021-11-06 22:09:37 +01:00
i2c-xiic.c
i2c: xiic: Fix RX IRQ busy check
2021-09-14 12:22:54 +02:00
i2c-xlp9xx.c
i2c: xlp9xx: fix main IRQ check
2021-08-25 23:04:17 +02:00
i2c-xlr.c
i2c: xlr: Fix a resource leak in the error handling path of 'xlr_i2c_probe()'
2021-10-29 22:04:35 +02:00
Kconfig
i2c: pasemi: Add Apple platform driver
2021-10-11 11:45:48 +02:00
Makefile
i2c: pasemi: Add Apple platform driver
2021-10-11 11:45:48 +02:00
scx200_acb.c
i2c: busses: Use fallthrough pseudo-keyword
2020-07-23 22:04:08 +02:00