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sfc: Replace MDIO spinlock with mutex 

We never use MDIO in atomic context, so we don't need to spin.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steve Hodgson 2009-11-28 05:34:44 +00:00 committed by David S. Miller
parent 47c3d19f60
commit ab86746175
3 changed files with 9 additions and 9 deletions
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2
drivers/net/sfc/efx.c
View File

@ -1922,7 +1922,7 @@ static int efx_init_struct(struct efx_nic *efx, struct efx_nic_type *type,
/* Initialise common structures */ /* Initialise common structures */
memset(efx, 0, sizeof(*efx)); memset(efx, 0, sizeof(*efx));
spin_lock_init(&efx->biu_lock); spin_lock_init(&efx->biu_lock);
spin_lock_init(&efx->phy_lock); mutex_init(&efx->mdio_lock);
mutex_init(&efx->spi_lock); mutex_init(&efx->spi_lock);
INIT_WORK(&efx->reset_work, efx_reset_work); INIT_WORK(&efx->reset_work, efx_reset_work);
INIT_DELAYED_WORK(&efx->monitor_work, efx_monitor); INIT_DELAYED_WORK(&efx->monitor_work, efx_monitor);

12
drivers/net/sfc/falcon.c
View File

@ -2110,7 +2110,7 @@ static int falcon_mdio_write(struct net_device *net_dev,
EFX_REGDUMP(efx, "writing MDIO %d register %d.%d with 0x%04x\n", EFX_REGDUMP(efx, "writing MDIO %d register %d.%d with 0x%04x\n",
prtad, devad, addr, value); prtad, devad, addr, value);
spin_lock_bh(&efx->phy_lock); mutex_lock(&efx->mdio_lock);
/* Check MDIO not currently being accessed */ /* Check MDIO not currently being accessed */
rc = falcon_gmii_wait(efx); rc = falcon_gmii_wait(efx);
@ -2145,8 +2145,8 @@ static int falcon_mdio_write(struct net_device *net_dev,
udelay(10); udelay(10);
} }
out: out:
spin_unlock_bh(&efx->phy_lock); mutex_unlock(&efx->mdio_lock);
return rc; return rc;
} }
@ -2158,7 +2158,7 @@ static int falcon_mdio_read(struct net_device *net_dev,
efx_oword_t reg; efx_oword_t reg;
int rc; int rc;
spin_lock_bh(&efx->phy_lock); mutex_lock(&efx->mdio_lock);
/* Check MDIO not currently being accessed */ /* Check MDIO not currently being accessed */
rc = falcon_gmii_wait(efx); rc = falcon_gmii_wait(efx);
@ -2194,8 +2194,8 @@ static int falcon_mdio_read(struct net_device *net_dev,
prtad, devad, addr, rc); prtad, devad, addr, rc);
} }
out: out:
spin_unlock_bh(&efx->phy_lock); mutex_unlock(&efx->mdio_lock);
return rc; return rc;
} }

4
drivers/net/sfc/net_driver.h
View File

@ -724,7 +724,7 @@ union efx_multicast_hash {
* @mac_op: MAC interface * @mac_op: MAC interface
* @mac_address: Permanent MAC address * @mac_address: Permanent MAC address
* @phy_type: PHY type * @phy_type: PHY type
* @phy_lock: PHY access lock * @mdio_lock: MDIO lock
* @phy_op: PHY interface * @phy_op: PHY interface
* @phy_data: PHY private data (including PHY-specific stats) * @phy_data: PHY private data (including PHY-specific stats)
* @mdio: PHY MDIO interface * @mdio: PHY MDIO interface
@ -806,7 +806,7 @@ struct efx_nic {
unsigned char mac_address[ETH_ALEN]; unsigned char mac_address[ETH_ALEN];
enum phy_type phy_type; enum phy_type phy_type;
spinlock_t phy_lock; struct mutex mdio_lock;
struct efx_phy_operations *phy_op; struct efx_phy_operations *phy_op;
void *phy_data; void *phy_data;
struct mdio_if_info mdio; struct mdio_if_info mdio;