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| author | Darrick J. Wong <djwong@us.ibm.com> | 2007-01-11 14:15:32 -0800 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.il.steeleye.com> | 2007-01-13 16:19:42 -0600 |
| commit | 57ba07dc54b7657e69fe8ac42d83df21e415c85b (patch) | |
| tree | 493da7233a4d7116c6302099a81c6c087b106165 /drivers/scsi/aic94xx/aic94xx_seq.c | |
| parent | 3b709df5f7c83b6b0907217a248a1414a37ffcb6 (diff) | |
| download | op-kernel-dev-57ba07dc54b7657e69fe8ac42d83df21e415c85b.zip op-kernel-dev-57ba07dc54b7657e69fe8ac42d83df21e415c85b.tar.gz | |
[SCSI] aic94xx: Lock DDB read/write accesses
Extend the use of the DDB lock to include all DDB accesses, because
DDB updates now occur from multiple threads. This fixes the SMP timeout
problems that we were occasionally seeing with a x260, because the
controller got confused when the DDBs got corrupted.
Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/scsi/aic94xx/aic94xx_seq.c')
| -rw-r--r-- | drivers/scsi/aic94xx/aic94xx_seq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/aic94xx/aic94xx_seq.c b/drivers/scsi/aic94xx/aic94xx_seq.c index 0d343cf..2768fe4 100644 --- a/drivers/scsi/aic94xx/aic94xx_seq.c +++ b/drivers/scsi/aic94xx/aic94xx_seq.c @@ -1395,7 +1395,9 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy) u8 phy_is_up; u8 mask; int i, err; + unsigned long flags; + spin_lock_irqsave(&asd_ha->hw_prof.ddb_lock, flags); for_each_phy(phy_mask, mask, i) asd_ddbsite_write_byte(asd_ha, 0, offsetof(struct asd_ddb_seq_shared, @@ -1415,6 +1417,7 @@ void asd_update_port_links(struct asd_ha_struct *asd_ha, struct asd_phy *phy) break; } } + spin_unlock_irqrestore(&asd_ha->hw_prof.ddb_lock, flags); if (err) asd_printk("couldn't update DDB 0:error:%d\n", err); |
