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Benjamin Herrenschmidt 4e56828a5d fsi/fsi-master-gpio: Implement CRC error recovery 
The FSI protocol defines two modes of recovery from CRC errors,
this implements both:

 - If the device returns an ECRC (it detected a CRC error in the
   command), then we simply issue the command again.

 - If the master detects a CRC error in the response, we send
   an E_POLL command which requests a resend of the response
   without actually re-executing the command (which could otherwise
   have unwanted side effects such as dequeuing a FIFO twice).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Tested-by: Joel Stanley <joel@jms.id.au>
---

Note: This was actually tested by removing some of my fixes, thus
causing us to hit occasional CRC errors during high LPC activity.
2018-06-12 14:05:16 +10:00
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accessibility
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acpi
Merge tag 'libnvdimm-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2018-06-08 17:21:52 -07:00
amba
Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
2018-06-06 13:49:25 -07:00
android
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ata
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
atm
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auxdisplay
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base
Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
2018-06-08 11:10:58 -07:00
bcma
Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping
2018-06-04 10:58:12 -07:00
block
Merge tag 'for-linus-20180608' of git://git.kernel.dk/linux-block
2018-06-08 13:36:19 -07:00
bluetooth
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bus
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:15:22 -07:00
cdrom
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char
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
2018-06-09 11:14:30 -07:00
clk
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
2018-06-09 12:06:24 -07:00
clocksource
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
2018-06-09 12:06:24 -07:00
connector
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
cpufreq
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:15:22 -07:00
cpuidle
Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-06-07 10:23:33 -07:00
crypto
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
2018-06-05 15:51:21 -07:00
dax
Merge tag 'libnvdimm-for-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
2018-06-08 17:21:52 -07:00
dca
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devfreq
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dio
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dma
Merge tag 'dmaengine-4.18-rc1' of git://git.infradead.org/users/vkoul/slave-dma
2018-06-08 11:02:21 -07:00
dma-buf
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edac
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eisa
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extcon
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firewire
treewide: Use struct_size() for kmalloc()-family
2018-06-06 11:15:43 -07:00
firmware
Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:19:45 -07:00
fmc
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fpga
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fsi
fsi/fsi-master-gpio: Implement CRC error recovery
2018-06-12 14:05:16 +10:00
gpio
Merge tag 'gpio-v4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
2018-06-08 10:31:52 -07:00
gpu
Merge tag 'drm-next-2018-06-11' of git://anongit.freedesktop.org/drm/drm
2018-06-11 07:17:36 -07:00
hid
Merge branch 'for-4.18/wacom' into for-linus
2018-06-08 10:28:24 +02:00
hsi
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hv
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
hwmon
Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-06-07 10:23:33 -07:00
hwspinlock
Merge tag 'hwlock-v4.18' of git://github.com/andersson/remoteproc
2018-06-11 12:09:19 -07:00
hwtracing
Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2018-06-05 16:20:22 -07:00
i2c
Merge tag 'usb-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
2018-06-05 16:14:12 -07:00
ide
ide: don't enable/disable interrupts in force threaded-IRQ mode
2018-06-05 16:26:47 -04:00
idle
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iio
Merge tag 'staging-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
2018-06-09 10:32:39 -07:00
infiniband
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
2018-06-07 13:04:07 -07:00
input
Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2018-06-11 07:20:17 -07:00
iommu
Revert "iommu/amd_iommu: Use CONFIG_DMA_DIRECT_OPS=y and dma_direct_{alloc,free}()"
2018-06-11 12:22:12 -07:00
ipack
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irqchip
irqchip/ls-scfg-msi: Map MSIs in the iommu
2018-06-06 12:05:19 +02:00
isdn
Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-06-04 13:57:43 -07:00
leds
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lightnvm
lightnvm: pblk: fix resource leak of invalid_bitmap
2018-06-05 09:20:27 -06:00
macintosh
Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-06-07 10:23:33 -07:00
mailbox
Merge tag 'mailbox-v4.18' of git://git.linaro.org/landing-teams/working/fujitsu/integration
2018-06-07 13:35:59 -07:00
mcb
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md
Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
2018-06-09 12:01:36 -07:00
media
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 17:49:09 -07:00
memory
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memstick
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message
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
mfd
Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2018-06-11 07:20:17 -07:00
misc
Merge tag 'pci-v4.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2018-06-07 12:45:58 -07:00
mmc
Merge tag 'mmc-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
2018-06-05 16:11:43 -07:00
mtd
Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 17:49:09 -07:00
mux
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net
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2018-06-10 19:25:23 -07:00
nfc
NFC: pn533: don't send USB data off of the stack
2018-05-31 12:43:14 +02:00
ntb
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nubus
Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2018-06-05 16:20:22 -07:00
nvdimm
Merge branch 'for-4.18/mcsafe' into libnvdimm-for-next
2018-06-08 15:16:44 -07:00
nvme
Merge tag 'for-linus-20180608' of git://git.kernel.dk/linux-block
2018-06-08 13:36:19 -07:00
nvmem
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of
Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:19:45 -07:00
opp
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oprofile
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parisc
Merge tag 'dma-mapping-4.18' of git://git.infradead.org/users/hch/dma-mapping
2018-06-04 10:58:12 -07:00
parport
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pci
Merge tag 'pci-v4.18-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
2018-06-07 12:45:58 -07:00
pcmcia
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perf
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phy
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
pinctrl
Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
2018-06-09 12:06:24 -07:00
platform
Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2018-06-11 07:20:17 -07:00
pnp
Merge tag 'media/v4.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
2018-06-07 12:34:37 -07:00
power
Merge tag 'for-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
2018-06-09 12:11:09 -07:00
powercap
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pps
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ps3
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ptp
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pwm
pwm: stm32: Initialize raw local variables
2018-06-04 07:13:40 +01:00
rapidio
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ras
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regulator
Merge tag 'regulator-v4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
2018-06-08 13:08:57 -07:00
remoteproc
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reset
Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:15:22 -07:00
rpmsg
rpmsg: smd: do not use mananged resources for endpoints and channels
2018-06-04 12:35:03 -07:00
rtc
Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd
2018-06-11 07:20:17 -07:00
s390
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
sbus
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scsi
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
sfi
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sh
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siox
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slimbus
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sn
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soc
Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
2018-06-11 18:19:45 -07:00
soundwire
Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2018-06-05 16:20:22 -07:00
spi
Merge tag 'pm-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
2018-06-05 09:38:39 -07:00
spmi
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ssb
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staging
Merge tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
2018-06-11 07:23:19 -07:00
target
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
2018-06-10 13:01:12 -07:00
tc
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tee
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thermal
Merge tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2018-06-06 17:27:14 -07:00
thunderbolt
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tty
Merge tag 'powerpc-4.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
2018-06-07 10:23:33 -07:00
uio
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usb
Merge tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2018-06-06 17:27:14 -07:00
uwb
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vfio
Merge branch 'work.aio-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2018-06-04 13:57:43 -07:00
vhost
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2018-06-06 18:39:49 -07:00
video
Merge tag 'backlight-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
2018-06-11 07:23:19 -07:00
virt
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virtio
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visorbus
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vlynq
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vme
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w1
Merge tag 'char-misc-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2018-06-05 16:20:22 -07:00
watchdog
watchdog: da9063: remove duplicated timeout_to_sel calls
2018-06-07 12:41:43 +02:00
xen
Merge tag 'for-linus-4.18-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
2018-06-08 09:24:54 -07:00
zorro
Merge tag 'overflow-v4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
2018-06-06 17:27:14 -07:00
Kconfig
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Makefile
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