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Sergey Shtylyov 8063a9f008 ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files 
commit 72aad489f9 upstream.

The {dma|pio}_mode sysfs files are incorrectly documented as having a
list of the supported DMA/PIO transfer modes, while the corresponding
fields of the *struct* ata_device hold the transfer mode IDs, not masks.

To match these docs, the {dma|pio}_mode (and even xfer_mode!) sysfs
files are handled by the ata_bitfield_name_match() macro which leads to
reading such kind of nonsense from them:

$ cat /sys/class/ata_device/dev3.0/pio_mode
XFER_UDMA_7, XFER_UDMA_6, XFER_UDMA_5, XFER_UDMA_4, XFER_MW_DMA_4,
XFER_PIO_6, XFER_PIO_5, XFER_PIO_4, XFER_PIO_3, XFER_PIO_2, XFER_PIO_1,
XFER_PIO_0

Using the correct ata_bitfield_name_search() macro fixes that:

$ cat /sys/class/ata_device/dev3.0/pio_mode
XFER_PIO_4

While fixing the file documentation, somewhat reword the {dma|pio}_mode
file doc and add a note about being mostly useful for PATA devices to
the xfer_mode file doc...

Fixes: d9027470b8 ("[libata] Add ATA transport class")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Cc: stable@vger.kernel.org
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 		2022-06-14 18:41:46 +02:00
..
ABI ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files 2022-06-14 18:41:46 +02:00
PCI
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RCU Merge branches 'doc.2021.11.30c', 'exp.2021.12.07a', 'fastnohz.2021.11.30c', 'fixes.2021.11.30c', 'nocb.2021.12.09a', 'nolibc.2021.11.30c', 'tasks.2021.12.09a', 'torture.2021.12.07a' and 'torturescript.2021.11.30c' into HEAD 2021-12-09 11:38:09 -08:00
accounting sched/psi: report zeroes for CPU full at the system level 2022-06-09 10:25:41 +02:00
admin-guide random: fix sysctl documentation nits 2022-05-30 09:27:12 +02:00
arc docs: ARC: Improve readability 2021-12-10 14:28:01 -07:00
arm Documentation: arm: marvell: Extend Avanta list 2022-01-27 11:22:34 -07:00
arm64 arm64: Enable repeat tlbi workaround on KRYO4XX gold CPUs 2022-05-25 09:59:15 +02:00
block docs: block: remove queue-sysfs.rst 2022-01-09 18:59:10 -07:00
bpf bpf, docs: Fully document the JMP mode modifiers 2022-01-05 13:11:26 -08:00
cdrom
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core-api Reinstate some of "swiotlb: rework "fix info leak with DMA_FROM_DEVICE"" 2022-04-08 13:58:59 +02:00
cpu-freq cpufreq: Reintroduce ready() callback 2022-02-09 13:18:49 +05:30
crypto
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dev-tools linux-kselftest-kunit-fixes-5.17-rc4 2022-02-10 15:39:59 -08:00
devicetree regulator: mt6315-regulator: fix invalid allowed mode 2022-06-14 18:41:25 +02:00
doc-guide docs: discourage use of list tables 2022-01-07 09:33:13 -07:00
driver-api cxl/core/port: Rename bus.c to port.c 2022-04-08 13:58:07 +02:00
fault-injection
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fb
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features ARM: 9158/1: leave it to core code to manage thread_info::cpu 2021-12-17 11:34:31 +00:00
filesystems ext4, doc: fix incorrect h_reserved size 2022-04-27 14:41:16 +02:00
firmware-guide Device properties framework updates for 5.17-rc1 2022-01-10 20:48:19 -08:00
firmware_class
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fpga
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gpu Revert "fbcon: Disable accelerated scrolling" 2022-02-02 15:15:11 +01:00
hid
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hwmon hwmon/pmbus: (ir38064) Add support for IR38060, IR38164 IR38263 2021-12-26 15:02:07 -08:00
i2c Docs: Fixes link to I2C specification 2021-12-31 14:39:28 +01:00
ia64
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ide
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iio
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infiniband
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input
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isdn
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kbuild doc: kbuild: fix default in `imply` table 2022-01-08 18:28:21 +09:00
kernel-hacking docs: fix typo in Documentation/kernel-hacking/locking.rst 2022-01-27 11:22:33 -07:00
leds
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litmus-tests
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livepatch Documentation: livepatch: Add livepatch API page 2021-12-23 11:35:53 +01:00
locking Documentation/locking/locktypes: Update migrate_disable() bits. 2021-11-30 15:40:31 +01:00
m68k
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maintainer
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mhi
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mips
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misc-devices
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netlabel
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networking This isn't a hugely busy cycle for documentation, but a few significant 2022-01-11 10:00:04 -08:00
nios2
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nvdimm
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openrisc
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parisc
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pcmcia
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power Merge branches 'pm-opp', 'pm-devfreq' and 'powercap' 2022-01-10 18:00:31 +01:00
powerpc
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process docs: submitting-patches: Fix crossref to 'The canonical patch format' 2022-06-06 08:47:56 +02:00
riscv riscv: Move KASAN mapping next to the kernel mapping 2022-01-19 17:54:04 -08:00
s390
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scheduler docs/scheduler: fix typo and warning in sched-bwc 2021-12-06 12:15:49 -07:00
scsi
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security docs: fix 'make htmldocs' warning in SCTP.rst 2022-04-08 13:58:59 +02:00
sh
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sound ALSA: usb-audio: Add quirk bits for enabling/disabling generic implicit fb 2022-06-09 10:25:32 +02:00
sparc
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sphinx docs: sphinx/requirements: Limit jinja2<3.1 2022-04-08 13:57:14 +02:00
sphinx-static docs: add support for RTD dark mode 2021-12-10 14:05:55 -07:00
spi spi: pxa2xx: Get rid of unused enable_loopback member 2021-11-29 12:20:00 +00:00
staging Three small documentation fixes. 2022-01-22 09:02:57 +02:00
target
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timers rcu: Remove the RCU_FAST_NO_HZ Kconfig option 2021-11-30 17:24:47 -08:00
tools rtla/Makefile: Properly handle dependencies 2022-06-14 18:41:28 +02:00
trace Three small documentation fixes. 2022-01-22 09:02:57 +02:00
translations cpufreq: Reintroduce ready() callback 2022-02-09 13:18:49 +05:30
tty Documentation: add TTY chapter 2021-11-26 16:27:43 +01:00
usb docs: ABI: fixed req_number desc in UAC1 2021-12-30 12:10:44 +01:00
userspace-api landlock: Reduce the maximum number of layers to 16 2022-06-09 10:26:23 +02:00
virt KVM: arm64: Do not change the PMU event filter after a VCPU has run 2022-04-13 19:27:13 +02:00
vm docs/vm: Fix typo in *harden* 2022-01-27 11:22:34 -07:00
w1
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watchdog
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x86
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xtensa
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.gitignore
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COPYING-logo
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Changes
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CodingStyle
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Kconfig
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Makefile docs: address some text issues with css/theme support 2021-12-16 15:54:12 -07:00
SubmittingPatches
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arch.rst docs: Add documentation for ARC processors 2021-11-29 14:53:11 -07:00
asm-annotations.rst
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atomic_bitops.txt
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atomic_t.txt
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conf.py docs/conf.py: Cope with removal of language=None in Sphinx 5.0.0 2022-06-09 10:26:30 +02:00
docutils.conf
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dontdiff
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index.rst docs: Hook the RTLA documents into the kernel docs build 2022-01-27 11:20:39 -07:00
logo.gif
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memory-barriers.txt asm-generic: introduce io_stop_wc() and add implementation for ARM64 2021-12-22 10:44:53 +00:00
watch_queue.rst
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