From 9950110cf0f79db91c0103876f3a58c9069243eb Mon Sep 17 00:00:00 2001
From: Tejun Heo <htejun@gmail.com>
Date: Mon, 6 Sep 2010 17:57:40 +0200
Subject: [PATCH] ata_piix: remove SIDPR locking
Now that libata provides proper cross-port EH exclusion. The SIDPR
locking added by commit 213373cf (ata_piix: fix locking around SIDPR
access) is no longer necessary. Remove it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
---
drivers/ata/ata_piix.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 1b40684111c0e..2cfc1ae366ea1 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -158,7 +158,6 @@ struct piix_map_db {
struct piix_host_priv {
const int *map;
u32 saved_iocfg;
- spinlock_t sidpr_lock; /* FIXME: remove once locking in EH is fixed */
void __iomem *sidpr;
};
@@ -969,15 +968,12 @@ static int piix_sidpr_scr_read(struct ata_link *link,
unsigned int reg, u32 *val)
{
struct piix_host_priv *hpriv = link->ap->host->private_data;
- unsigned long flags;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
- spin_lock_irqsave(&hpriv->sidpr_lock, flags);
piix_sidpr_sel(link, reg);
*val = ioread32(hpriv->sidpr + PIIX_SIDPR_DATA);
- spin_unlock_irqrestore(&hpriv->sidpr_lock, flags);
return 0;
}
@@ -985,15 +981,12 @@ static int piix_sidpr_scr_write(struct ata_link *link,
unsigned int reg, u32 val)
{
struct piix_host_priv *hpriv = link->ap->host->private_data;
- unsigned long flags;
if (reg >= ARRAY_SIZE(piix_sidx_map))
return -EINVAL;
- spin_lock_irqsave(&hpriv->sidpr_lock, flags);
piix_sidpr_sel(link, reg);
iowrite32(val, hpriv->sidpr + PIIX_SIDPR_DATA);
- spin_unlock_irqrestore(&hpriv->sidpr_lock, flags);
return 0;
}
@@ -1597,7 +1590,6 @@ static int __devinit piix_init_one(struct pci_dev *pdev,
hpriv = devm_kzalloc(dev, sizeof(*hpriv), GFP_KERNEL);
if (!hpriv)
return -ENOMEM;
- spin_lock_init(&hpriv->sidpr_lock);
/* Save IOCFG, this will be used for cable detection, quirk
* detection and restoration on detach. This is necessary