AuxXxilium/linux_dsm_epyc7002
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8503ff1665
linux_dsm_epyc7002/drivers/i2c/busses
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Jisheng Zhang 8503ff1665 i2c: designware: Avoid unnecessary resuming during system suspend 
Commit 1fc2fe204c ("i2c: designware: Add runtime PM hooks") adds
runtime pm support using the same ops for system pm and runtime pm.
When suspend to ram, the i2c host may have been runtime suspended, thus
i2c_dw_disable() hangs.

Previously, I fixed this issue by separating ops for system pm and
runtime pm, then in the system suspend/resume path, runtime pm apis are
used to ensure the device is at correct state.

But as Mika Westerberg pointed out: it sounds a bit silly to resume the
device just because you want to call i2c_dw_disable() for it before
suspending again. He then suggested an elegant solution which keeps the
device runtime suspended during system suspend with the help of
'dev->power.direct_complete'. This patch adopted this solution, and in
fact Mika provided the main code.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Tested-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2015-06-03 02:54:19 +09:00
..
i2c-acorn.c i2c: acorn: is tristate and should use module.h 2014-01-24 18:21:11 +01:00
i2c-ali15x3.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-ali1535.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-ali1563.c i2c: ali1563: fix checkpatch.pl issues 2014-05-22 10:09:21 +02:00
i2c-amd756-s4882.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-amd756.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-amd8111.c i2c: remove DEFINE_PCI_DEVICE_TABLE macro 2014-03-13 09:44:59 +01:00
i2c-at91.c i2c: at91: fixup return type of wait_for_completion_timeout 2015-03-15 10:54:08 +01:00
i2c-au1550.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-axxia.c i2c: axxia: Add bus recovery functionality 2015-06-03 00:40:16 +09:00
i2c-bcm2835.c i2c: i2c-bcm2835: match return type of wait_for_completion_timeout 2015-03-15 10:28:34 +01:00
i2c-bcm-iproc.c i2c: bcm-iproc: make use of the new infrastructure for quirks 2015-03-13 15:10:59 +01:00
i2c-bcm-kona.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-bfin-twi.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-cadence.c i2c: cadence: fixup wait_for_completion_timeout return handling 2015-03-15 10:20:45 +01:00
i2c-cbus-gpio.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-cpm.c i2c: cpm: make use of the new infrastructure for quirks 2015-03-13 15:10:54 +01:00
i2c-cros-ec-tunnel.c mfd: cros_ec: Use fixed size arrays to transfer data with the EC 2015-02-26 15:44:52 -08:00
i2c-davinci.c i2c: davinci: use ICPFUNC to toggle I2C as gpio for bus recovery 2015-04-10 17:57:28 +02:00
i2c-designware-baytrail.c i2c: designware-baytrail: baytrail_i2c_acquire() might sleep 2015-03-07 01:08:26 +01:00
i2c-designware-core.c i2c: designware: fixup return handling of wait_for_completion_timeout 2015-03-15 10:22:38 +01:00
i2c-designware-core.h i2c: designware: Add Intel Baytrail PMIC I2C bus support 2015-01-26 12:26:25 +01:00
i2c-designware-pcidrv.c i2c: designware-pci: update Intel copyright line 2015-02-17 16:42:43 +01:00
i2c-designware-platdrv.c i2c: designware: Avoid unnecessary resuming during system suspend 2015-06-03 02:54:19 +09:00
i2c-digicolor.c i2c: digicolor: remove duplicate include 2015-04-23 19:35:32 +02:00
i2c-diolan-u2c.c i2c: remove unnecessary OOM messages 2014-06-02 19:24:33 +02:00
i2c-dln2.c i2c: dln2: set the device tree node of the adapter 2015-03-27 16:56:21 +01:00
i2c-efm32.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-eg20t.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-elektor.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-exynos5.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-gpio.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-highlander.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-hix5hd2.c PM: Merge the SET*_RUNTIME_PM_OPS() macros 2014-12-04 00:51:30 +01:00
i2c-hydra.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-i801.c i2c: i801: Use managed pcim_* PCI device initialization and reservation 2015-03-09 10:51:59 +01:00
i2c-ibm_iic.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-ibm_iic.h i2c-ibm_iic: Whitespace cleanup 2008-01-27 18:14:45 +01:00
i2c-img-scb.c i2c: img-scb: fixup of wait_for_completion_timeout return handling 2015-03-15 10:54:09 +01:00
i2c-imx.c i2c: constify platform_device_id 2015-05-12 18:27:48 +02:00
i2c-iop3xx.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-iop3xx.h i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-isch.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-ismt.c i2c: ismt: fix type of return var of wait_for_completion_timeout 2015-03-15 10:50:02 +01:00
i2c-jz4780.c i2c: jz4780: Fix build for m68k and sparc64 2015-04-15 17:57:26 +02:00
i2c-kempld.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-meson.c i2c: add support for Amlogic Meson I2C controller 2014-11-18 16:16:44 +01:00
i2c-mpc.c i2c: mpc: Fix ISR return value 2015-03-27 16:53:41 +01:00
i2c-mt65xx.c I2C: mediatek: Add driver for MediaTek MT8173 I2C controller 2015-06-01 08:28:23 +09:00
i2c-mv64xxx.c i2c: mv64xxx: rework offload support to fix several problems 2014-12-17 19:26:03 +01:00
i2c-mxs.c i2c: constify platform_device_id 2015-05-12 18:27:48 +02:00
i2c-nforce2-s4985.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-nforce2.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-nomadik.c i2c: nomadik: match status to return type of read_i2c 2015-03-15 10:51:13 +01:00
i2c-ocores.c i2c: ocores: rework clk code to handle NULL cookie 2015-02-20 18:01:23 +01:00
i2c-octeon.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-omap.c i2c: omap: implement bus recovery 2015-05-12 21:16:04 +02:00
i2c-opal.c i2c: opal: Update quirk flags to do write-then-anything 2015-03-14 12:08:21 +01:00
i2c-parport-light.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-parport.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-parport.h i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pasemi.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pca-isa.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pca-platform.c i2c: pca-platform: fix broken email address 2015-04-23 19:35:30 +02:00
i2c-piix4.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-pmcmsp.c i2c: pmcmsp: make use of the new infrastructure for quirks 2015-03-13 15:10:58 +01:00
i2c-pnx.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-powermac.c i2c: powermac: make use of the new infrastructure for quirks 2015-03-13 15:10:57 +01:00
i2c-puv3.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-pxa-pci.c i2c: remove DEFINE_PCI_DEVICE_TABLE macro 2014-03-13 09:44:59 +01:00
i2c-pxa.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-qup.c i2c: qup: make use of the new infrastructure for quirks 2015-03-13 15:10:53 +01:00
i2c-rcar.c i2c: rcar: report slave capabilities to users 2015-06-01 08:07:14 +09:00
i2c-riic.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-rk3x.c i2c: rk3x: Increase wait timeout to 1 second 2015-05-12 15:15:17 +02:00
i2c-robotfuzz-osif.c i2c: Add bus driver for for OSIF USB i2c device. 2014-01-13 13:56:56 +01:00
i2c-s3c2410.c i2c: constify platform_device_id 2015-05-12 18:27:48 +02:00
i2c-scmi.c i2c: delete non-required instances of include <linux/init.h> 2014-01-24 18:24:31 +01:00
i2c-sh7760.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sh_mobile.c i2c: sh_mobile: terminate DMA reads properly 2015-01-30 17:58:43 +01:00
i2c-sibyte.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-simtec.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00
i2c-sirf.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sis96x.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-sis630.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-sis5595.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-st.c i2c: st: add include for pinctrl 2015-04-23 19:35:33 +02:00
i2c-stu300.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-sun6i-p2wi.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-taos-evm.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-tegra.c i2c: tegra: match return type of wait_for_completion_timeout 2015-03-15 10:16:17 +01:00
i2c-tiny-usb.c i2c: i2c-tiny-usb: Remove RobotFuzz USB vendor:product ID 2014-01-13 13:56:52 +01:00
i2c-versatile.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
i2c-via.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-viapro.c i2c: remove FSF address 2014-11-07 18:35:33 +01:00
i2c-viperboard.c i2c: viperboard: make use of the new infrastructure for quirks 2015-03-13 15:10:57 +01:00
i2c-wmt.c i2c: wmt: match return type of wait_for_completion_timeout 2015-03-15 10:29:53 +01:00
i2c-xgene-slimpro.c i2c: add SLIMpro I2C device driver on APM X-Gene platform 2015-05-12 22:06:05 +02:00
i2c-xiic.c i2c: xiic: Fix kerneldoc warnings 2015-05-12 15:18:27 +02:00
i2c-xlp9xx.c i2c: xlp9xx: Driver for Netlogic XLP9XX/5XX I2C controller 2015-04-10 18:59:49 +02:00
i2c-xlr.c i2c: busses: drop owner assignment from platform_drivers 2014-10-20 16:20:37 +02:00
Kconfig I2C: mediatek: Add driver for MediaTek I2C controller 2015-06-01 08:28:09 +09:00
Makefile I2C: mediatek: Add driver for MediaTek I2C controller 2015-06-01 08:28:09 +09:00
scx200_acb.c Driver core patches for 3.19-rc1 2014-12-14 16:10:09 -08:00