scsi: ufs: core: Add device level exception support

The ufs device JEDEC specification version 4.1 adds support for the
device level exception events. To support this new device level
exception feat

scsi: ufs: core: Add device level exception support

The ufs device JEDEC specification version 4.1 adds support for the
device level exception events. To support this new device level
exception feature, expose two new sysfs nodes below to provide the user
space access to the device level exception information.

/sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_count
/sys/bus/platform/drivers/ufshcd/*/device_lvl_exception_id

The device_lvl_exception_count sysfs node reports the number of device
level exceptions that have occurred since the last time this variable is
reset. Writing a value of 0 will reset it. The device_lvl_exception_id
reports the exception ID which is the qDeviceLevelExceptionID attribute
of the device JEDEC specifications version 4.1 and later. The user space
application can query these sysfs nodes to get more information about
the device level exception.

Signed-off-by: Bao D. Nguyen <[email protected]>
Link: https://lore.kernel.org/r/6278d7c125b2f0cf5056f4a647a4b9c1fdd24fc7.1743198325.git.quic_nguyenb@quicinc.com
Reviewed-by: Peter Wang <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Reviewed-by: Arthur Simchaev <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ABI: sysfs-driver-ufs: Add missing UFS sysfs attributes

Add UFS driver sysfs attributes clkscale_enable, clkgate_enable and
clkgate_delay_ms to this document.

Signed-off-by: Ziqi Chen <quic_z

scsi: ABI: sysfs-driver-ufs: Add missing UFS sysfs attributes

Add UFS driver sysfs attributes clkscale_enable, clkgate_enable and
clkgate_delay_ms to this document.

Signed-off-by: Ziqi Chen <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Critical health condition

Martin hi,

The UFS4.1 standard, released on January 8, 2025, added a new exception
event: HEALTH_CRITICAL, which notifies the host of a device's critical

scsi: ufs: core: Critical health condition

Martin hi,

The UFS4.1 standard, released on January 8, 2025, added a new exception
event: HEALTH_CRITICAL, which notifies the host of a device's critical
health condition. This notification implies that the device is approaching
the end of its lifetime based on the amount of performed program/erase
cycles.

Once an EOL (End-of-Life) exception event is received, we increment a
designated member, which is exposed via a sysfs entry. This new entry, will
report the number of times a critical health event has been reported by a
UFS device.

To handle this new sysfs entry, userspace applications can use select(),
poll(), or epoll() to monitor changes in the critical_health attribute. The
kernel will call sysfs_notify() to signal changes, allowing the userspace
application to detect and respond to these changes efficiently.

The host can gain further insight into the specific issue by reading one of
the following attributes: bPreEOLInfo, bDeviceLifeTimeEstA,
bDeviceLifeTimeEstB, bWriteBoosterBufferLifeTimeEst, and
bRPMBLifeTimeEst. All those are available for reading via the driver's
sysfs entries or through an applicable utility. It is up to userspace to
read these attributes if needed.

Signed-off-by: Avri Altman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: Add HCI capabilities sysfs group

The standard register map of UFSHCI is comprised of several groups. The
first group (starting from offset 0x00), is the host capabilities group.
It conta

scsi: ufs: Add HCI capabilities sysfs group

The standard register map of UFSHCI is comprised of several groups. The
first group (starting from offset 0x00), is the host capabilities group.
It contains some interesting information that otherwise is not available,
e.g. the UFS version of the platform etc.

Reviewed-by: Keoseong Park <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Signed-off-by: Avri Altman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: sysfs: Make max_number_of_rtt read-write

Given the importance of the RTT parameter, we want to be able to configure
it via sysfs. This is because UFS users should be discouraged from chan

scsi: ufs: sysfs: Make max_number_of_rtt read-write

Given the importance of the RTT parameter, we want to be able to configure
it via sysfs. This is because UFS users should be discouraged from change
UFS device parameters without the UFSHCI driver being aware of these
changes.

Signed-off-by: Avri Altman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Add sysfs node for UFS RTC update

Introduce a sysfs node named 'rtc_update_ms' within the kernel, enabling
user to adjust the RTC periodic update frequency to suit the specific
requ

scsi: ufs: core: Add sysfs node for UFS RTC update

Introduce a sysfs node named 'rtc_update_ms' within the kernel, enabling
user to adjust the RTC periodic update frequency to suit the specific
requirements of the system and UFS. Also, this patch allows the user to
disable/enable periodic update RTC in the UFS idle time.

Signed-off-by: Bean Huo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Acked-by: Avri Altman <[email protected]>
Reviewed-by: Thomas Weißschuh <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: ufs-sysfs: Expose UFS power info

Having UFS power info available in sysfs makes it easier to tell the state
of the link during runtime considering we have a bunch of power saving
features

scsi: ufs: ufs-sysfs: Expose UFS power info

Having UFS power info available in sysfs makes it easier to tell the state
of the link during runtime considering we have a bunch of power saving
features and various combinations for backward compatibility.

Reviewed-by: Manivannan Sadhasivam <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Can Guo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Remove HPB support

Interest among UFS users in HPB has reduced significantly. I am not aware
of any current users of the HPB functionality. Hence remove HPB support
from the kernel.

scsi: ufs: core: Remove HPB support

Interest among UFS users in HPB has reduced significantly. I am not aware
of any current users of the HPB functionality. Hence remove HPB support
from the kernel.

A note: the work in JEDEC on a successor for HPB is nearing completion.
Zoned storage for UFS or ZUFS combines the UFS standard with ZBC-2.

Acked-by: Avri Altman <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: ChanWoo Lee <[email protected]>
Cc: Daejun Park <[email protected]>
Cc: Keoseong Park <[email protected]>
Signed-off-by: Bart Van Assche <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Update contact email for monitor sysfs nodes

Update contact email addresses for Can Guo and Asutosh Das, replace Subhash
Jadavani's contact.

Signed-off-by: Can Guo <quic_cang@quici

scsi: ufs: core: Update contact email for monitor sysfs nodes

Update contact email addresses for Can Guo and Asutosh Das, replace Subhash
Jadavani's contact.

Signed-off-by: Can Guo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: wb: Add explicit flush_threshold sysfs attribute

There are three flags that control Write Booster Feature:

1. WB ON/OFF
2. WB Hibern Flush ON/OFF (implicitly)
3. WB Flush ON/

scsi: ufs: wb: Add explicit flush_threshold sysfs attribute

There are three flags that control Write Booster Feature:

1. WB ON/OFF
2. WB Hibern Flush ON/OFF (implicitly)
3. WB Flush ON/OFF (explicit)

In the case of "Hibern Flush", one of the conditions for flush WB buffer is
that avail_wb_buff < wb_flush_threshold.

As we know, different users have different requirements for power
consumption and performance. Therefore, we need the ability to manually set
wb_flush_threshold, so that users can easily and flexibly adjust the
wb_flush_threshold value, thereby achieving a balance between power
consumption and performance.

So the sysfs attribute that controls this is necessary.

wb_flush_threshold represents the threshold for flushing WB buffer, whose
value expressed in unit of 10% granularity, such as '1' representing 10%,
'2' representing 20%, and so on.

Signed-off-by: Lu Hongfei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Print UFSHCD capabilities in controller's sysfs node

Userspace may want to manually control when the data should go into
WriteBooster buffer. The control happens via "wb_on" node, b

scsi: ufs: core: Print UFSHCD capabilities in controller's sysfs node

Userspace may want to manually control when the data should go into
WriteBooster buffer. The control happens via "wb_on" node, but presently,
there is no simple way to check if WriteBooster is supported and
enabled.

Expose the Write Booster and Clock Scaling capabilities to be able to
determine if the Write Booster is available and if its manual control is
blocked by Clock Scaling mechanism.

Link: https://lore.kernel.org/r/20220829081845.v8.1.Ibf9efc9be50783eeee55befa2270b7d38552354c@changeid
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Daniil Lunev <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: wb: Add explicit flush sysfs attribute

There is the following quirk to bypass "WB Flush" in Write Booster.

- UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

If this quirk is not set, there is n

scsi: ufs: wb: Add explicit flush sysfs attribute

There is the following quirk to bypass "WB Flush" in Write Booster.

- UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL

If this quirk is not set, there is no knob that can control "WB Flush".

There are three flags that control Write Booster Feature:

1. WB ON/OFF
2. WB Hibern Flush ON/OFF (implicitly)
3. WB Flush ON/OFF (explicit)

The sysfs attribute that controls the WB was implemented. (1)

In the case of "Hibern Flush", it is always good to turn on. Control may
not be required. (2)

Finally, "Flush" may be necessary because the Auto-Hibern8 is not supported
in a specific environment. So the sysfs attribute that controls this is
necessary. (3)

Link: https://lore.kernel.org/r/20220804075354epcms2p8c21c894b4e28840c5fc651875b7f435f@epcms2p8
Reviewed-by: Avri Altman <[email protected]>
Signed-off-by: Jinyoung Choi <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: ufshpb: Change sysfs node hpb_stats/rb_* prefix to start with rcmd_*

According to the documentation of the sysfs nodes rb_noti_cnt,
rb_active_cnt and rb_inactive_cnt, these are all relate

scsi: ufs: ufshpb: Change sysfs node hpb_stats/rb_* prefix to start with rcmd_*

According to the documentation of the sysfs nodes rb_noti_cnt,
rb_active_cnt and rb_inactive_cnt, these are all related to HPB
recommendation in UPIU response packet. 'rcmd' (recommendation) should be
the correct abbreviation.

Change the sysfs documentation about these sysfs nodes to highlight what
they mean under different HPB control modes.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Keoseong Park <[email protected]>
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: Documentation: Fix typo in sysfs-driver-ufs

Remove repeated word: "the The amount"

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sohaib Mohamed

scsi: Documentation: Fix typo in sysfs-driver-ufs

Remove repeated word: "the The amount"

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Sohaib Mohamed <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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ABI: sysfs-driver-ufs: Add another What for platform drivers

The current what expressions:
What: /sys/bus/platform/drivers/ufshcd/*/...

Doesn't actually match what (some?) platform driver

ABI: sysfs-driver-ufs: Add another What for platform drivers

The current what expressions:
What: /sys/bus/platform/drivers/ufshcd/*/...

Doesn't actually match what (some?) platform drivers actually
export. For instance, drivers/scsi/ufs/ufs-hisi.c actually
creates the sysfs struct for ufshcd inside this directory:

/sys/devices/platform/soc/ff3c0000.ufs

Which has those aliases:

/sys/devices/virtual/devlink/platform:fff35000.crg_ctrl--platform:ff3c0000.ufs/consumer/
/sys/bus/platform/drivers/ufshcd-hisi/ff3c0000.ufs/
/sys/bus/platform/devices/soc/ff3c0000.ufs/
/sys/bus/platform/devices/ff3c0000.ufs/

So, add another What: for such files that will match the
device ufs entries, e. g.:

What: /sys/bus/platform/devices/*.ufs/

Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Link: https://lore.kernel.org/r/bc61469964bbcabe38d12aa88f2734d38a8741e5.1632750608.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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scsi: ufs: ufshpb: Make host mode parameters configurable

Elaborate some more on the host control mode logic parameters, explaining
what they do and how to configure them.

Link: https://lore.kernel

scsi: ufs: ufshpb: Make host mode parameters configurable

Elaborate some more on the host control mode logic parameters, explaining
what they do and how to configure them.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Daejun Park <[email protected]>
Signed-off-by: Avri Altman <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: ufshpb: Add HPB 2.0 support

Version 2.0 of HBP supports reads of varying sizes from 4KB to 1MB.

A read operation <= 32KB is supported as single HPB read. A read between
36KB and 1MB is s

scsi: ufs: ufshpb: Add HPB 2.0 support

Version 2.0 of HBP supports reads of varying sizes from 4KB to 1MB.

A read operation <= 32KB is supported as single HPB read. A read between
36KB and 1MB is supported by a combination of write buffer command and HPB
read command to deliver more PPN. The write buffer commands may not be
issued immediately due to busy tags. To use HPB read more aggressively, the
driver can requeue the write buffer command. The requeue threshold is
implemented as timeout and can be modified with requeue_timeout_ms entry in
sysfs.

[mkp: REQ_OP_DRV_* and blk_rq_is_passthrough()]

Link: https://lore.kernel.org/r/20210712090025epcms2p3b3d94f6f1b2cfa394e3d9ba130ca0fa7@epcms2p3
Tested-by: Can Guo <[email protected]>
Tested-by: Stanley Chu <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Can Guo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Reviewed-by: Stanley Chu <[email protected]>
Signed-off-by: Daejun Park <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: ufshpb: Introduce Host Performance Buffer feature

Implement Host Performance Buffer (HPB) initialization and add function
calls to UFS core driver.

NAND flash-based storage devices, incl

scsi: ufs: ufshpb: Introduce Host Performance Buffer feature

Implement Host Performance Buffer (HPB) initialization and add function
calls to UFS core driver.

NAND flash-based storage devices, including UFS, have mechanisms to
translate logical addresses of I/O requests to the corresponding physical
addresses of the flash storage. In UFS, logical-to-physical-address (L2P)
map data, which is required to identify the physical address for the
requested I/Os, can only be partially stored in SRAM from NAND flash. Due
to this partial loading, accessing the flash address area, where the L2P
information for that address is not loaded in the SRAM, can result in
serious performance degradation.

The basic concept of HPB is to cache L2P mapping entries in host system
memory so that both physical block address (PBA) and logical block address
(LBA) can be delivered in HPB read command. The HPB read command allows to
read data faster than a regular read command in UFS since it provides the
physical address (HPB Entry) of the desired logical block in addition to
its logical address. The UFS device can access the physical block in NAND
directly without searching and uploading L2P mapping table. This improves
read performance because the NAND read operation for uploading L2P mapping
table is removed.

In HPB initialization, the host checks if the UFS device supports HPB
feature and retrieves related device capabilities. Then, HPB parameters are
configured in the device.

Total start-up time of popular applications was measured and the difference
observed between HPB being enabled and disabled. Popular applications are
12 game apps and 24 non-game apps. Each test cycle consists of running 36
applications in sequence. We repeated the cycle for observing performance
improvement by L2P mapping cache hit in HPB.

The following is the test environment:

- kernel version: 4.4.0
- RAM: 8GB
- UFS 2.1 (64GB)

Results:

+-------+----------+----------+-------+
| cycle | baseline | with HPB | diff |
+-------+----------+----------+-------+
| 1 | 272.4 | 264.9 | -7.5 |
| 2 | 250.4 | 248.2 | -2.2 |
| 3 | 226.2 | 215.6 | -10.6 |
| 4 | 230.6 | 214.8 | -15.8 |
| 5 | 232.0 | 218.1 | -13.9 |
| 6 | 231.9 | 212.6 | -19.3 |
+-------+----------+----------+-------+

We also measured HPB performance using iozone:

$ iozone -r 4k -+n -i2 -ecI -t 16 -l 16 -u 16 -s $IO_RANGE/16 -F \
mnt/tmp_1 mnt/tmp_2 mnt/tmp_3 mnt/tmp_4 mnt/tmp_5 mnt/tmp_6 mnt/tmp_7 \
mnt/tmp_8 mnt/tmp_9 mnt/tmp_10 mnt/tmp_11 mnt/tmp_12 mnt/tmp_13 \
mnt/tmp_14 mnt/tmp_15 mnt/tmp_16

Results:

+----------+--------+---------+
| IO range | HPB on | HPB off |
+----------+--------+---------+
| 1 GB | 294.8 | 300.87 |
| 4 GB | 293.51 | 179.35 |
| 8 GB | 294.85 | 162.52 |
| 16 GB | 293.45 | 156.26 |
| 32 GB | 277.4 | 153.25 |
+----------+--------+---------+

Link: https://lore.kernel.org/r/20210712085830epcms2p8c1288b7f7a81b044158a18232617b572@epcms2p8
Reported-by: kernel test robot <[email protected]>
Tested-by: Bean Huo <[email protected]>
Tested-by: Can Guo <[email protected]>
Tested-by: Stanley Chu <[email protected]>
Reviewed-by: Greg Kroah-Hartman <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Reviewed-by: Can Guo <[email protected]>
Reviewed-by: Bean Huo <[email protected]>
Reviewed-by: Stanley Chu <[email protected]>
Acked-by: Avri Altman <[email protected]>
Signed-off-by: Daejun Park <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: ufs: core: Introduce HBA performance monitor sysfs nodes

Add a new sysfs group which has nodes to monitor data/request transfer
performance. This sysfs group has nodes showing total sectors/re

scsi: ufs: core: Introduce HBA performance monitor sysfs nodes

Add a new sysfs group which has nodes to monitor data/request transfer
performance. This sysfs group has nodes showing total sectors/requests
transferred, total busy time spent and max/min/avg/sum latencies. This
group can be enhanced later to show more UFS driver layer performance
statistics data during runtime.

Link: https://lore.kernel.org/r/[email protected]
Reviewed-by: Daejun Park <[email protected]>
Acked-by: Bean Huo <[email protected]>
Signed-off-by: Can Guo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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docs: typo fixes in Documentation/ABI/

Fix the following typos in the Documentation/ABI/ directory:

- In file obsolete/sysfs-cpuidle, change "obselete" for "obsolete".

- In file removed/sysfs-kern

docs: typo fixes in Documentation/ABI/

Fix the following typos in the Documentation/ABI/ directory:

- In file obsolete/sysfs-cpuidle, change "obselete" for "obsolete".

- In file removed/sysfs-kernel-uids, change "propotional" for "proportional".

- In directory stable/, fix the following words: "associtated" for "associated",
"hexidecimal" for "hexadecimal", "vlue" for "value", "csed" for "caused" and
"wrtie" for "write". This updates a total of five files.

- In directory testing/, fix the following words: "subystem" for "subsystem",
"isochrnous" for "isochronous", "Desctiptors" for "Descriptors", "picutre" for
"picture", "capture" for "capture", "occured" for "ocurred", "connnected" for
"connected","agressively" for "aggressively","manufacturee" for "manufacturer"
and "transaction" for "transaction", "malformatted" for "incorrectly formated"
,"internel" for "internal", "writtento" for "written to", "specificed" for
"specified", "beyound" for "beyond", "Symetric" for "Symmetric". This updates
a total of eleven files.

Signed-off-by: Carlos Bilbao <[email protected]>
Reviewed-by: Randy Dunlap <[email protected]>
Reviewed-by: Mauro Carvalho Chehab <[email protected]>
Link: https://lore.kernel.org/r/5710038.lOV4Wx5bFT@iron-maiden
Signed-off-by: Jonathan Corbet <[email protected]>

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scsi: ufs: docs: ABI: Add wb_on documentation for new entry wb_on

Adds UFS sysfs documentation for new entry wb_on.

[mkp: fix doc formatting]

Link: https://lore.kernel.org/r/20210119163847.20165-3

scsi: ufs: docs: ABI: Add wb_on documentation for new entry wb_on

Adds UFS sysfs documentation for new entry wb_on.

[mkp: fix doc formatting]

Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bean Huo <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

fix format

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scsi: docs: ABI: sysfs-driver-ufs: Rectify table formatting

Commit 0b2894cd0fdf ("scsi: docs: ABI: sysfs-driver-ufs: Add DeepSleep
power mode") adds new entries in tables of sysfs-driver-ufs ABI
doc

scsi: docs: ABI: sysfs-driver-ufs: Rectify table formatting

Commit 0b2894cd0fdf ("scsi: docs: ABI: sysfs-driver-ufs: Add DeepSleep
power mode") adds new entries in tables of sysfs-driver-ufs ABI
documentation, but formatted the table incorrectly.

Hence, make htmldocs warns:

./Documentation/ABI/testing/sysfs-driver-ufs:{915,956}:
WARNING: Malformed table. Text in column margin in table line 15.

Rectify table formatting for DeepSleep power mode.

Link: https://lore.kernel.org/r/[email protected]
Acked-by: Adrian Hunter <[email protected]>
Signed-off-by: Lukas Bulwahn <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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scsi: docs: ABI: sysfs-driver-ufs: Add DeepSleep power mode

Update sysfs documentation for addition of DeepSleep power mode.

Link: https://lore.kernel.org/r/20210104155026.16417-1-adrian.hunter@int

scsi: docs: ABI: sysfs-driver-ufs: Add DeepSleep power mode

Update sysfs documentation for addition of DeepSleep power mode.

Link: https://lore.kernel.org/r/[email protected]
Fixes: fe1d4c2ebcae ("scsi: ufs: Add DeepSleep feature")
Signed-off-by: Adrian Hunter <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

show more ...

docs: ABI: cleanup several ABI documents

There are some ABI documents that, while they don't generate
any warnings, they have issues when parsed by get_abi.pl script
on its output result.

Address t

docs: ABI: cleanup several ABI documents

There are some ABI documents that, while they don't generate
any warnings, they have issues when parsed by get_abi.pl script
on its output result.

Address them, in order to provide a clean output.

Reviewed-by: Tom Rix <[email protected]> # for fpga-manager
Reviewed-By: Kajol Jain<[email protected]> # for sysfs-bus-event_source-devices-hv_gpci and sysfs-bus-event_source-devices-hv_24x7
Acked-by: Jonathan Cameron <[email protected]> #for IIO
Acked-by: Oded Gabbay <[email protected]> # for Habanalabs
Acked-by: Vaibhav Jain <[email protected]> # for sysfs-bus-papr-pmem
Acked-by: Cezary Rojewski <[email protected]> # for catpt
Acked-by: Suzuki K Poulose <[email protected]>
Acked-by: Ilya Dryomov <[email protected]> # for rbd
Acked-by: Jonathan Corbet <[email protected]>
Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Link: https://lore.kernel.org/r/5bc78e5b68ed1e9e39135173857cb2e753be868f.1604042072.git.mchehab+huawei@kernel.org
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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scsi: ufs: docs: Add WriteBooster documentation

Adds sysfs documentation for WriteBooster entries.

Link: https://lore.kernel.org/r/[email protected]
Acked-by

scsi: ufs: docs: Add WriteBooster documentation

Adds sysfs documentation for WriteBooster entries.

Link: https://lore.kernel.org/r/[email protected]
Acked-by: Avri Altman <[email protected]>
Signed-off-by: Asutosh Das <[email protected]>
Signed-off-by: Martin K. Petersen <[email protected]>

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