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| author | Sergey Shtylyov <s.shtylyov@omp.ru> | 2022-06-08 22:51:07 +0300 |
|---|---|---|
| committer | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-06-09 09:25:25 +0900 |
| commit | 72aad489f992871e908ff6d9055b26c6366fb864 (patch) | |
| tree | fdfea758174cb627e27552d35d51ec70a0bb34ea /drivers/ata | |
| parent | 6d11acd452fd885ef6ace184c9c70bc863a8c72f (diff) | |
| download | linux-72aad489f992871e908ff6d9055b26c6366fb864.tar.gz linux-72aad489f992871e908ff6d9055b26c6366fb864.tar.bz2 linux-72aad489f992871e908ff6d9055b26c6366fb864.zip | |
ata: libata-transport: fix {dma|pio|xfer}_mode sysfs files
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: d9027470b886 ("[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>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-transport.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libata-transport.c b/drivers/ata/libata-transport.c index ca129854a88c..c38027887499 100644 --- a/drivers/ata/libata-transport.c +++ b/drivers/ata/libata-transport.c @@ -196,7 +196,7 @@ static struct { { XFER_PIO_0, "XFER_PIO_0" }, { XFER_PIO_SLOW, "XFER_PIO_SLOW" } }; -ata_bitfield_name_match(xfer,ata_xfer_names) +ata_bitfield_name_search(xfer, ata_xfer_names) /* * ATA Port attributes |