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| author | Niklas Cassel <niklas.cassel@wdc.com> | 2022-10-07 15:23:40 +0200 |
|---|---|---|
| committer | Damien Le Moal <damien.lemoal@opensource.wdc.com> | 2022-10-19 13:46:08 +0900 |
| commit | 5122e53ee784b9a2a2f40d34222751b6b4ab076c (patch) | |
| tree | 7a636ece9bb4c0c65920727a68adfc8dd521e324 /drivers/ata | |
| parent | 7834589e81bcf5fe4e7ab60430670c9245183de0 (diff) | |
| download | linux-5122e53ee784b9a2a2f40d34222751b6b4ab076c.tar.bz2 | |
ata: libata-core: do not retry reading the log on timeout
ata_read_log_page() first tries to read the log using READ LOG DMA EXT.
If that fails it will instead try to read the log using READ LOG EXT.
ata_exec_internal_sg() is synchronous, so it will wait for the command to
finish. If we actually got an error back from the device, it is correct
to retry. However, if the command timed out, ata_exec_internal_sg() will
freeze the port.
There is no point in retrying if the port is frozen, as
ata_exec_internal_sg() will return AC_ERR_SYSTEM on a frozen port,
without ever sending the command down to the drive.
Therefore, avoid retrying if the first command froze the port, as that
will result in a misleading AC_ERR_SYSTEM error print, instead of printing
the error that actually caused the port to be frozen (AC_ERR_TIMEOUT).
Signed-off-by: Niklas Cassel <niklas.cassel@wdc.com>
Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index 695a20dee1d1..884ae73b11ea 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -2000,7 +2000,8 @@ retry: if (err_mask) { if (dma) { dev->horkage |= ATA_HORKAGE_NO_DMA_LOG; - goto retry; + if (!ata_port_is_frozen(dev->link->ap)) + goto retry; } ata_dev_err(dev, "Read log 0x%02x page 0x%02x failed, Emask 0x%x\n", |