[net-next,v10,3/3] net: stmmac: Add driver support for common safety IRQ
Commit Message
Add support to listen HW safety IRQ like ECC(error
correction code), DPP(data path parity), FSM(finite state
machine) fault in common IRQ line.
Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
---
drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 ++
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 41 ++++++++++++++++++-
.../ethernet/stmicro/stmmac/stmmac_platform.c | 8 ++++
4 files changed, 51 insertions(+), 2 deletions(-)
Comments
On Mon, Jan 29, 2024 at 05:41:29PM +0530, Suraj Jaiswal wrote:
> Add support to listen HW safety IRQ like ECC(error
> correction code), DPP(data path parity), FSM(finite state
> machine) fault in common IRQ line.
>
> Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
> ---
> drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
> drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 ++
> .../net/ethernet/stmicro/stmmac/stmmac_main.c | 41 ++++++++++++++++++-
> .../ethernet/stmicro/stmmac/stmmac_platform.c | 8 ++++
> 4 files changed, 51 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> index 721c1f8e892f..b9233b09b80f 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> @@ -344,6 +344,7 @@ enum request_irq_err {
> REQ_IRQ_ERR_ALL,
> REQ_IRQ_ERR_TX,
> REQ_IRQ_ERR_RX,
> + REQ_IRQ_ERR_SFTY,
> REQ_IRQ_ERR_SFTY_UE,
> REQ_IRQ_ERR_SFTY_CE,
> REQ_IRQ_ERR_LPI,
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> index 9f89acf31050..ca3d93851bed 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> @@ -31,6 +31,7 @@ struct stmmac_resources {
> int wol_irq;
> int lpi_irq;
> int irq;
> + int sfty_irq;
> int sfty_ce_irq;
> int sfty_ue_irq;
> int rx_irq[MTL_MAX_RX_QUEUES];
> @@ -297,6 +298,7 @@ struct stmmac_priv {
> void __iomem *ptpaddr;
> void __iomem *estaddr;
> unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
> + int sfty_irq;
> int sfty_ce_irq;
> int sfty_ue_irq;
> int rx_irq[MTL_MAX_RX_QUEUES];
> @@ -305,6 +307,7 @@ struct stmmac_priv {
> char int_name_mac[IFNAMSIZ + 9];
> char int_name_wol[IFNAMSIZ + 9];
> char int_name_lpi[IFNAMSIZ + 9];
> + char int_name_sfty[IFNAMSIZ + 10];
> char int_name_sfty_ce[IFNAMSIZ + 10];
> char int_name_sfty_ue[IFNAMSIZ + 10];
> char int_name_rx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 14];
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> index 47de466e432c..e0192a282121 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> @@ -3592,6 +3592,10 @@ static void stmmac_free_irq(struct net_device *dev,
> if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
> free_irq(priv->wol_irq, dev);
> fallthrough;
> + case REQ_IRQ_ERR_SFTY:
> + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq)
> + free_irq(priv->sfty_irq, dev);
> + fallthrough;
> case REQ_IRQ_ERR_WOL:
> free_irq(dev->irq, dev);
> fallthrough;
> @@ -3661,6 +3665,23 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
> }
> }
>
> + /* Request the common Safety Feature Correctible/Uncorrectible
> + * Error line in case of another line is used
> + */
> + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
> + int_name = priv->int_name_sfty;
> + sprintf(int_name, "%s:%s", dev->name, "safety");
> + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
> + 0, int_name, dev);
> + if (unlikely(ret < 0)) {
> + netdev_err(priv->dev,
> + "%s: alloc sfty MSI %d (error: %d)\n",
> + __func__, priv->sfty_irq, ret);
> + irq_err = REQ_IRQ_ERR_SFTY;
> + goto irq_error;
> + }
> + }
> +
> /* Request the Safety Feature Correctible Error line in
> * case of another line is used
> */
> @@ -3798,6 +3819,21 @@ static int stmmac_request_irq_single(struct net_device *dev)
> }
> }
>
> + /* Request the common Safety Feature Correctible/Uncorrectible
> + * Error line in case of another line is used
> + */
> + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
> + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
> + IRQF_SHARED, dev->name, dev);
> + if (unlikely(ret < 0)) {
> + netdev_err(priv->dev,
> + "%s: ERROR: allocating the sfty IRQ %d (%d)\n",
> + __func__, priv->sfty_irq, ret);
> + irq_err = REQ_IRQ_ERR_SFTY;
> + goto irq_error;
> + }
> + }
> +
> return 0;
>
> irq_error:
> @@ -6022,8 +6058,8 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
> if (test_bit(STMMAC_DOWN, &priv->state))
> return IRQ_HANDLED;
>
> - /* Check if a fatal error happened */
> - if (stmmac_safety_feat_interrupt(priv))
> + /* Check ASP error if it isn't delivered via an individual IRQ */
> + if (priv->sfty_irq <= 0 && stmmac_safety_feat_interrupt(priv))
> return IRQ_HANDLED;
>
> /* To handle Common interrupts */
> @@ -7462,6 +7498,7 @@ int stmmac_dvr_probe(struct device *device,
> priv->dev->irq = res->irq;
> priv->wol_irq = res->wol_irq;
> priv->lpi_irq = res->lpi_irq;
> + priv->sfty_irq = res->sfty_irq;
> priv->sfty_ce_irq = res->sfty_ce_irq;
> priv->sfty_ue_irq = res->sfty_ue_irq;
> for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> index 70eadc83ca68..ab250161fd79 100644
> --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> @@ -743,6 +743,14 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
> dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
> }
>
> + stmmac_res->sfty_irq =
> + platform_get_irq_byname_optional(pdev, "sfty");
> + if (stmmac_res->sfty_irq < 0) {
> + if (stmmac_res->sfty_irq == -EPROBE_DEFER)
> + return -EPROBE_DEFER;
> + dev_info(&pdev->dev, "IRQ safety IRQ not found\n");
Serge had this comment on v9: https://lore.kernel.org/netdev/giimpexp3qk3byb725r3ot3aund2bwmi45yrctkydatm73d5af@e36xmjf2ehvu/
s/IRQ safety IRQ/IRQ sfty
* Although I would have also converted this to just dev_dbg() since
* the IRQ line is optional and is present on a single platform you
* have.
With the subject and the log-message fixed feel free to add:
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
-Serge(y)
If you would have changed the dev_info() here it would have been
appropriate to add his "Reviewed-by:" tag, which makes your series more
likely to get merged. I assume you just misunderstood/didn't see the
request (I'd expect a comment somewhere about why you *don't* want to do
that if you did see it but decided not to do it), but in the future my
advice is for a minor change like this to just make it and take the
Reviewed-by tag on your patch!
> + }
> +
> stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
>
> return PTR_ERR_OR_ZERO(stmmac_res->addr);
> --
> 2.25.1
>
Hi Andrew, Suraj
On Mon, Jan 29, 2024 at 10:20:18AM -0600, Andrew Halaney wrote:
> On Mon, Jan 29, 2024 at 05:41:29PM +0530, Suraj Jaiswal wrote:
> > Add support to listen HW safety IRQ like ECC(error
> > correction code), DPP(data path parity), FSM(finite state
> > machine) fault in common IRQ line.
> >
> > Signed-off-by: Suraj Jaiswal <quic_jsuraj@quicinc.com>
> > ---
> > drivers/net/ethernet/stmicro/stmmac/common.h | 1 +
> > drivers/net/ethernet/stmicro/stmmac/stmmac.h | 3 ++
> > .../net/ethernet/stmicro/stmmac/stmmac_main.c | 41 ++++++++++++++++++-
> > .../ethernet/stmicro/stmmac/stmmac_platform.c | 8 ++++
> > 4 files changed, 51 insertions(+), 2 deletions(-)
> >
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
> > index 721c1f8e892f..b9233b09b80f 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/common.h
> > +++ b/drivers/net/ethernet/stmicro/stmmac/common.h
> > @@ -344,6 +344,7 @@ enum request_irq_err {
> > REQ_IRQ_ERR_ALL,
> > REQ_IRQ_ERR_TX,
> > REQ_IRQ_ERR_RX,
> > + REQ_IRQ_ERR_SFTY,
> > REQ_IRQ_ERR_SFTY_UE,
> > REQ_IRQ_ERR_SFTY_CE,
> > REQ_IRQ_ERR_LPI,
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> > index 9f89acf31050..ca3d93851bed 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
> > @@ -31,6 +31,7 @@ struct stmmac_resources {
> > int wol_irq;
> > int lpi_irq;
> > int irq;
> > + int sfty_irq;
> > int sfty_ce_irq;
> > int sfty_ue_irq;
> > int rx_irq[MTL_MAX_RX_QUEUES];
> > @@ -297,6 +298,7 @@ struct stmmac_priv {
> > void __iomem *ptpaddr;
> > void __iomem *estaddr;
> > unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
> > + int sfty_irq;
> > int sfty_ce_irq;
> > int sfty_ue_irq;
> > int rx_irq[MTL_MAX_RX_QUEUES];
> > @@ -305,6 +307,7 @@ struct stmmac_priv {
> > char int_name_mac[IFNAMSIZ + 9];
> > char int_name_wol[IFNAMSIZ + 9];
> > char int_name_lpi[IFNAMSIZ + 9];
> > + char int_name_sfty[IFNAMSIZ + 10];
> > char int_name_sfty_ce[IFNAMSIZ + 10];
> > char int_name_sfty_ue[IFNAMSIZ + 10];
> > char int_name_rx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 14];
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > index 47de466e432c..e0192a282121 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
> > @@ -3592,6 +3592,10 @@ static void stmmac_free_irq(struct net_device *dev,
> > if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
> > free_irq(priv->wol_irq, dev);
> > fallthrough;
> > + case REQ_IRQ_ERR_SFTY:
> > + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq)
> > + free_irq(priv->sfty_irq, dev);
> > + fallthrough;
> > case REQ_IRQ_ERR_WOL:
> > free_irq(dev->irq, dev);
> > fallthrough;
> > @@ -3661,6 +3665,23 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
> > }
> > }
> >
> > + /* Request the common Safety Feature Correctible/Uncorrectible
> > + * Error line in case of another line is used
> > + */
> > + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
> > + int_name = priv->int_name_sfty;
> > + sprintf(int_name, "%s:%s", dev->name, "safety");
> > + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
> > + 0, int_name, dev);
> > + if (unlikely(ret < 0)) {
> > + netdev_err(priv->dev,
> > + "%s: alloc sfty MSI %d (error: %d)\n",
> > + __func__, priv->sfty_irq, ret);
> > + irq_err = REQ_IRQ_ERR_SFTY;
> > + goto irq_error;
> > + }
> > + }
> > +
> > /* Request the Safety Feature Correctible Error line in
> > * case of another line is used
> > */
> > @@ -3798,6 +3819,21 @@ static int stmmac_request_irq_single(struct net_device *dev)
> > }
> > }
> >
> > + /* Request the common Safety Feature Correctible/Uncorrectible
> > + * Error line in case of another line is used
> > + */
> > + if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
> > + ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
> > + IRQF_SHARED, dev->name, dev);
> > + if (unlikely(ret < 0)) {
> > + netdev_err(priv->dev,
> > + "%s: ERROR: allocating the sfty IRQ %d (%d)\n",
> > + __func__, priv->sfty_irq, ret);
> > + irq_err = REQ_IRQ_ERR_SFTY;
> > + goto irq_error;
> > + }
> > + }
> > +
> > return 0;
> >
> > irq_error:
> > @@ -6022,8 +6058,8 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
> > if (test_bit(STMMAC_DOWN, &priv->state))
> > return IRQ_HANDLED;
> >
> > - /* Check if a fatal error happened */
> > - if (stmmac_safety_feat_interrupt(priv))
> > + /* Check ASP error if it isn't delivered via an individual IRQ */
> > + if (priv->sfty_irq <= 0 && stmmac_safety_feat_interrupt(priv))
> > return IRQ_HANDLED;
> >
> > /* To handle Common interrupts */
> > @@ -7462,6 +7498,7 @@ int stmmac_dvr_probe(struct device *device,
> > priv->dev->irq = res->irq;
> > priv->wol_irq = res->wol_irq;
> > priv->lpi_irq = res->lpi_irq;
> > + priv->sfty_irq = res->sfty_irq;
> > priv->sfty_ce_irq = res->sfty_ce_irq;
> > priv->sfty_ue_irq = res->sfty_ue_irq;
> > for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
> > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > index 70eadc83ca68..ab250161fd79 100644
> > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
> > @@ -743,6 +743,14 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
> > dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
> > }
> >
> > + stmmac_res->sfty_irq =
> > + platform_get_irq_byname_optional(pdev, "sfty");
> > + if (stmmac_res->sfty_irq < 0) {
> > + if (stmmac_res->sfty_irq == -EPROBE_DEFER)
> > + return -EPROBE_DEFER;
> > + dev_info(&pdev->dev, "IRQ safety IRQ not found\n");
>
> Serge had this comment on v9: https://lore.kernel.org/netdev/giimpexp3qk3byb725r3ot3aund2bwmi45yrctkydatm73d5af@e36xmjf2ehvu/
>
> s/IRQ safety IRQ/IRQ sfty
> * Although I would have also converted this to just dev_dbg() since
> * the IRQ line is optional and is present on a single platform you
> * have.
>
>
> With the subject and the log-message fixed feel free to add:
>
> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
>
> -Serge(y)
>
> If you would have changed the dev_info() here it would have been
> appropriate to add his "Reviewed-by:" tag, which makes your series more
> likely to get merged. I assume you just misunderstood/didn't see the
> request (I'd expect a comment somewhere about why you *don't* want to do
> that if you did see it but decided not to do it), but in the future my
> advice is for a minor change like this to just make it and take the
> Reviewed-by tag on your patch!
Right. Suraj likely has just missed that part, because having "IRQ
safety IRQ" statement sounds clumsy and not looking alike the others
optional IRQ info-messages, meanwhile having "IRQ sfty" instead would
be more correct.
Anyway, Suraj, could you please at least fix the info-string and
resubmit the series? With that fixed feel free to add my tag:
Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
Note I am not insisting in using dev_dbg() instead of dev_info() since
from one side the sfty IRQ line getting procedure would look alike to
the others optional IRQs retrieved in this method, from another side
using dbg log-level here and info-level for others IRQ wouldn't look
coherent. So it seems reasonable to use info-level everywhere and
convert to dbg-level at once (eventually).
-Serge(y)
>
> > + }
> > +
> > stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
> >
> > return PTR_ERR_OR_ZERO(stmmac_res->addr);
> > --
> > 2.25.1
> >
>
>
@@ -344,6 +344,7 @@ enum request_irq_err {
REQ_IRQ_ERR_ALL,
REQ_IRQ_ERR_TX,
REQ_IRQ_ERR_RX,
+ REQ_IRQ_ERR_SFTY,
REQ_IRQ_ERR_SFTY_UE,
REQ_IRQ_ERR_SFTY_CE,
REQ_IRQ_ERR_LPI,
@@ -31,6 +31,7 @@ struct stmmac_resources {
int wol_irq;
int lpi_irq;
int irq;
+ int sfty_irq;
int sfty_ce_irq;
int sfty_ue_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
@@ -297,6 +298,7 @@ struct stmmac_priv {
void __iomem *ptpaddr;
void __iomem *estaddr;
unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
+ int sfty_irq;
int sfty_ce_irq;
int sfty_ue_irq;
int rx_irq[MTL_MAX_RX_QUEUES];
@@ -305,6 +307,7 @@ struct stmmac_priv {
char int_name_mac[IFNAMSIZ + 9];
char int_name_wol[IFNAMSIZ + 9];
char int_name_lpi[IFNAMSIZ + 9];
+ char int_name_sfty[IFNAMSIZ + 10];
char int_name_sfty_ce[IFNAMSIZ + 10];
char int_name_sfty_ue[IFNAMSIZ + 10];
char int_name_rx_irq[MTL_MAX_TX_QUEUES][IFNAMSIZ + 14];
@@ -3592,6 +3592,10 @@ static void stmmac_free_irq(struct net_device *dev,
if (priv->wol_irq > 0 && priv->wol_irq != dev->irq)
free_irq(priv->wol_irq, dev);
fallthrough;
+ case REQ_IRQ_ERR_SFTY:
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq)
+ free_irq(priv->sfty_irq, dev);
+ fallthrough;
case REQ_IRQ_ERR_WOL:
free_irq(dev->irq, dev);
fallthrough;
@@ -3661,6 +3665,23 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
}
}
+ /* Request the common Safety Feature Correctible/Uncorrectible
+ * Error line in case of another line is used
+ */
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
+ int_name = priv->int_name_sfty;
+ sprintf(int_name, "%s:%s", dev->name, "safety");
+ ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
+ 0, int_name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: alloc sfty MSI %d (error: %d)\n",
+ __func__, priv->sfty_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY;
+ goto irq_error;
+ }
+ }
+
/* Request the Safety Feature Correctible Error line in
* case of another line is used
*/
@@ -3798,6 +3819,21 @@ static int stmmac_request_irq_single(struct net_device *dev)
}
}
+ /* Request the common Safety Feature Correctible/Uncorrectible
+ * Error line in case of another line is used
+ */
+ if (priv->sfty_irq > 0 && priv->sfty_irq != dev->irq) {
+ ret = request_irq(priv->sfty_irq, stmmac_safety_interrupt,
+ IRQF_SHARED, dev->name, dev);
+ if (unlikely(ret < 0)) {
+ netdev_err(priv->dev,
+ "%s: ERROR: allocating the sfty IRQ %d (%d)\n",
+ __func__, priv->sfty_irq, ret);
+ irq_err = REQ_IRQ_ERR_SFTY;
+ goto irq_error;
+ }
+ }
+
return 0;
irq_error:
@@ -6022,8 +6058,8 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id)
if (test_bit(STMMAC_DOWN, &priv->state))
return IRQ_HANDLED;
- /* Check if a fatal error happened */
- if (stmmac_safety_feat_interrupt(priv))
+ /* Check ASP error if it isn't delivered via an individual IRQ */
+ if (priv->sfty_irq <= 0 && stmmac_safety_feat_interrupt(priv))
return IRQ_HANDLED;
/* To handle Common interrupts */
@@ -7462,6 +7498,7 @@ int stmmac_dvr_probe(struct device *device,
priv->dev->irq = res->irq;
priv->wol_irq = res->wol_irq;
priv->lpi_irq = res->lpi_irq;
+ priv->sfty_irq = res->sfty_irq;
priv->sfty_ce_irq = res->sfty_ce_irq;
priv->sfty_ue_irq = res->sfty_ue_irq;
for (i = 0; i < MTL_MAX_RX_QUEUES; i++)
@@ -743,6 +743,14 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
}
+ stmmac_res->sfty_irq =
+ platform_get_irq_byname_optional(pdev, "sfty");
+ if (stmmac_res->sfty_irq < 0) {
+ if (stmmac_res->sfty_irq == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ dev_info(&pdev->dev, "IRQ safety IRQ not found\n");
+ }
+
stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
return PTR_ERR_OR_ZERO(stmmac_res->addr);