Re: [PATCH] Fix PHY Lib support for gianfar and ucc_geth

[Jeff Garzik]

Andy Fleming wrote:

The PHY Lib now uses mutexes instead of spin_locks.  ucc_geth
and gianfar both grab the locks in their mdio_reset functions,
so they need to use mutex_(un)lock instead.  This was not caught
until someone tested it on an SMP system.

Signed-off-by: Andy Fleming <[EMAIL PROTECTED]>
---
 drivers/net/gianfar_mii.c  |    4 ++--
 drivers/net/ucc_geth_mii.c |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/net/gianfar_mii.c b/drivers/net/gianfar_mii.c
index 100bf41..6a647d9 100644
--- a/drivers/net/gianfar_mii.c
+++ b/drivers/net/gianfar_mii.c
@@ -127,7 +127,7 @@ int gfar_mdio_reset(struct mii_bus *bus)
        struct gfar_mii __iomem *regs = (void __iomem *)bus->priv;
        unsigned int timeout = PHY_INIT_TIMEOUT;

- spin_lock_bh(&bus->mdio_lock);

+       mutex_lock(&bus->mdio_lock);

/* Reset the management interface */

        gfar_write(&regs->miimcfg, MIIMCFG_RESET);
@@ -140,7 +140,7 @@ int gfar_mdio_reset(struct mii_bus *bus)
                        timeout--)
                cpu_relax();

- spin_unlock_bh(&bus->mdio_lock);

+       mutex_unlock(&bus->mdio_lock);

if(timeout <= 0) {

                printk(KERN_ERR "%s: The MII Bus is stuck!\n",
diff --git a/drivers/net/ucc_geth_mii.c b/drivers/net/ucc_geth_mii.c
index e3ba14a..c69e654 100644
--- a/drivers/net/ucc_geth_mii.c
+++ b/drivers/net/ucc_geth_mii.c
@@ -109,7 +109,7 @@ int uec_mdio_reset(struct mii_bus *bus)
        struct ucc_mii_mng __iomem *regs = (void __iomem *)bus->priv;
        unsigned int timeout = PHY_INIT_TIMEOUT;

- spin_lock_bh(&bus->mdio_lock);

+       mutex_lock(&bus->mdio_lock);

/* Reset the management interface */

        out_be32(&regs->miimcfg, MIIMCFG_RESET_MANAGEMENT);
@@ -121,7 +121,7 @@ int uec_mdio_reset(struct mii_bus *bus)
        while ((in_be32(&regs->miimind) & MIIMIND_BUSY) && timeout--)
                cpu_relax();

- spin_unlock_bh(&bus->mdio_lock);

+       mutex_unlock(&bus->mdio_lock);

applied


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