When phy interface changes its status, it calls phy_change() function.
This function calls the interrupt disabling functions for the driver registered, but if this driver doesn't implement it, there is no IRQ disabling. After doing the work, we call enable_irq and not the respective driver function. This fixes it, as it could lead to an unbalanced IRQ.
Signed-off-by: Jean-Michel Hautbois <[email protected]>
---
drivers/net/phy/phy.c | 12 ++++++++++--
1 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 7670aac..b28f2ac 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -89,7 +89,8 @@ static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
phydev->interrupts = interrupts;
if (phydev->drv->config_intr)
err = phydev->drv->config_intr(phydev);
-
+ else
+ err = -ENOSYS;
return err;
}
@@ -541,6 +542,10 @@ static int phy_enable_interrupts(struct phy_device *phydev)
return err;
err = phy_config_interrupt(phydev, PHY_INTERRUPT_ENABLED);
+ if (err == -ENOSYS) {
+ err = 0;
+ enable_irq(phydev->irq);
+ }
return err;
}
@@ -556,7 +561,10 @@ static int phy_disable_interrupts(struct phy_device *phydev)
/* Disable PHY interrupts */
err = phy_config_interrupt(phydev, PHY_INTERRUPT_DISABLED);
- if (err)
+ if (err == -ENOSYS) {
+ err = 0;
+ disable_irq(phydev->irq);
+ } else if (err != 0)
goto phy_err;
/* Clear the interrupt */
--
1.7.0.4
Fixes some coding style issues (errors and warnings).
Signed-off-by: Jean-Michel Hautbois <[email protected]>
---
drivers/net/phy/phy.c | 20 ++++++++++----------
1 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index b28f2ac..69758b4 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -33,10 +33,10 @@
#include <linux/timer.h>
#include <linux/workqueue.h>
-#include <asm/atomic.h>
-#include <asm/io.h>
+#include <linux/atomic.h>
+#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
/**
* phy_print_status - Convenience function to print out the current phy status
@@ -47,11 +47,11 @@ void phy_print_status(struct phy_device *phydev)
pr_info("PHY: %s - Link is %s", dev_name(&phydev->dev),
phydev->link ? "Up" : "Down");
if (phydev->link)
- printk(" - %d/%s", phydev->speed,
+ pr_info(" - %d/%s", phydev->speed,
DUPLEX_FULL == phydev->duplex ?
"Full" : "Half");
- printk("\n");
+ pr_info("\n");
}
EXPORT_SYMBOL(phy_print_status);
@@ -325,7 +325,7 @@ int phy_mii_ioctl(struct phy_device *phydev,
case SIOCSMIIREG:
if (mii_data->phy_id == phydev->addr) {
- switch(mii_data->reg_num) {
+ switch (mii_data->reg_num) {
case MII_BMCR:
if ((val & (BMCR_RESET|BMCR_ANENABLE)) == 0)
phydev->autoneg = AUTONEG_DISABLE;
@@ -352,7 +352,7 @@ int phy_mii_ioctl(struct phy_device *phydev,
}
phy_write(phydev, mii_data->reg_num, val);
-
+
if (mii_data->reg_num == MII_BMCR &&
val & BMCR_RESET &&
phydev->drv->config_init) {
@@ -471,7 +471,7 @@ static void phy_force_reduction(struct phy_device *phydev)
int idx;
idx = phy_find_setting(phydev->speed, phydev->duplex);
-
+
idx++;
idx = phy_find_valid(idx, phydev->supported);
@@ -732,6 +732,7 @@ out_unlock:
* will not reenable interrupts.
*/
}
+EXPORT_SYMBOL(phy_stop);
/**
@@ -762,7 +763,6 @@ void phy_start(struct phy_device *phydev)
}
mutex_unlock(&phydev->lock);
}
-EXPORT_SYMBOL(phy_stop);
EXPORT_SYMBOL(phy_start);
/**
@@ -782,7 +782,7 @@ void phy_state_machine(struct work_struct *work)
if (phydev->adjust_state)
phydev->adjust_state(phydev->attached_dev);
- switch(phydev->state) {
+ switch (phydev->state) {
case PHY_DOWN:
case PHY_STARTING:
case PHY_READY:
--
1.7.0.4
On Sat, 2010-12-18 at 16:55 +0100, Jean-Michel Hautbois wrote:
> When phy interface changes its status, it calls phy_change() function.
> This function calls the interrupt disabling functions for the driver registered, but if this driver doesn't implement it, there is no IRQ disabling. After doing the work, we call enable_irq and not the respective driver function. This fixes it, as it could lead to an unbalanced IRQ.
>
> Signed-off-by: Jean-Michel Hautbois <[email protected]>
> ---
> drivers/net/phy/phy.c | 12 ++++++++++--
> 1 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
> index 7670aac..b28f2ac 100644
> --- a/drivers/net/phy/phy.c
> +++ b/drivers/net/phy/phy.c
> @@ -89,7 +89,8 @@ static int phy_config_interrupt(struct phy_device *phydev, u32 interrupts)
> phydev->interrupts = interrupts;
> if (phydev->drv->config_intr)
> err = phydev->drv->config_intr(phydev);
> -
> + else
> + err = -ENOSYS;
[...]
ENOSYS means missing system call. Perhaps EOPNOTSUPP is the appropriate
error code.
Ben.
--
Ben Hutchings, Senior Software Engineer, Solarflare Communications
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.