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| author | Mikael Pettersson <mikpe@it.uu.se> | 2010-01-09 23:32:06 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-01-12 14:33:07 -0500 |
| commit | a2342f46437cde56803a36fdf94da635a74ad41c (patch) | |
| tree | 6cec79d175ca40743087a6f39a613d564a0cda10 /drivers/ata | |
| parent | 066000dd856709b6980123eb39b957fe26993f7b (diff) | |
| download | linux-stable-a2342f46437cde56803a36fdf94da635a74ad41c.tar.gz linux-stable-a2342f46437cde56803a36fdf94da635a74ad41c.tar.bz2 linux-stable-a2342f46437cde56803a36fdf94da635a74ad41c.zip | |
sata_promise: don't classify overruns as HSM errors
When sata_promise encounters an overrun or underrun error it
translates that to a libata AC_ERR_HSM, causing a hard reset.
Since over/under-runs were thought to be rare and transient,
this action seemed reasonable.
Unfortunately it turns out that the controller throws overrun
errors when e.g. hal polls a CD or DVD writer containing blank
media, causing long sequences of hard resets and retries before
EH finally gives up.
This patch updates sata_promise to classify over/under-runs as
AC_ERR_OTHER instead. This allows libata EH and upper layers to
retry or fail the operation as they see fit without the disruption
caused by repeated hard resets.
This fixes a problem using a DVD-RAM drive with sata_promise,
reported by Thomas Schorpp. I also tested it on a DVD-RW drive.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Tested-by: thomas schorpp <thomas.schorpp@googlemail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/sata_promise.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/sata_promise.c b/drivers/ata/sata_promise.c index 07d8d00b4d34..63306285c843 100644 --- a/drivers/ata/sata_promise.c +++ b/drivers/ata/sata_promise.c @@ -862,7 +862,7 @@ static void pdc_error_intr(struct ata_port *ap, struct ata_queued_cmd *qc, if (port_status & PDC_DRIVE_ERR) ac_err_mask |= AC_ERR_DEV; if (port_status & (PDC_OVERRUN_ERR | PDC_UNDERRUN_ERR)) - ac_err_mask |= AC_ERR_HSM; + ac_err_mask |= AC_ERR_OTHER; if (port_status & (PDC2_ATA_HBA_ERR | PDC2_ATA_DMA_CNT_ERR)) ac_err_mask |= AC_ERR_ATA_BUS; if (port_status & (PDC_PH_ERR | PDC_SH_ERR | PDC_DH_ERR | PDC2_HTO_ERR |