drivers/net/wireless/ath/ath9k/ahb.c | 22 ++++++---------------- drivers/net/wireless/ath/ath9k/pci.c | 9 +++------ 2 files changed, 9 insertions(+), 22 deletions(-)
Avoids having to manually free. Both of these get called and removed in
probe only and are safe to convert.
devm_platform_ioremap_resource is different as it also calls
devm_request_memory_region, which requires non overlapping memory
regions. Luckily, that seems to be the case.
Tested on a TP-Link Archer C7v2.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
drivers/net/wireless/ath/ath9k/ahb.c | 22 ++++++----------------
drivers/net/wireless/ath/ath9k/pci.c | 9 +++------
2 files changed, 9 insertions(+), 22 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c
index d4805e02b927..636a487bf9b4 100644
--- a/drivers/net/wireless/ath/ath9k/ahb.c
+++ b/drivers/net/wireless/ath/ath9k/ahb.c
@@ -74,7 +74,6 @@ static int ath_ahb_probe(struct platform_device *pdev)
void __iomem *mem;
struct ath_softc *sc;
struct ieee80211_hw *hw;
- struct resource *res;
const struct platform_device_id *id = platform_get_device_id(pdev);
int irq;
int ret = 0;
@@ -86,16 +85,10 @@ static int ath_ahb_probe(struct platform_device *pdev)
return -EINVAL;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "no memory resource found\n");
- return -ENXIO;
- }
-
- mem = devm_ioremap(&pdev->dev, res->start, resource_size(res));
- if (mem == NULL) {
+ mem = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(mem)) {
dev_err(&pdev->dev, "ioremap failed\n");
- return -ENOMEM;
+ return PTR_ERR(mem);
}
irq = platform_get_irq(pdev, 0);
@@ -118,16 +111,16 @@ static int ath_ahb_probe(struct platform_device *pdev)
sc->mem = mem;
sc->irq = irq;
- ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
+ ret = devm_request_irq(&pdev->dev, irq, ath_isr, IRQF_SHARED, "ath9k", sc);
if (ret) {
dev_err(&pdev->dev, "request_irq failed\n");
- goto err_free_hw;
+ return ret;
}
ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
if (ret) {
dev_err(&pdev->dev, "failed to initialize device\n");
- goto err_irq;
+ goto err_free_hw;
}
ah = sc->sc_ah;
@@ -137,8 +130,6 @@ static int ath_ahb_probe(struct platform_device *pdev)
return 0;
- err_irq:
- free_irq(irq, sc);
err_free_hw:
ieee80211_free_hw(hw);
return ret;
@@ -152,7 +143,6 @@ static void ath_ahb_remove(struct platform_device *pdev)
struct ath_softc *sc = hw->priv;
ath9k_deinit_device(sc);
- free_irq(sc->irq, sc);
ieee80211_free_hw(sc->hw);
}
}
diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
index 27d4034c814e..48c7cae11e37 100644
--- a/drivers/net/wireless/ath/ath9k/pci.c
+++ b/drivers/net/wireless/ath/ath9k/pci.c
@@ -965,9 +965,9 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
}
if (!msi_enabled)
- ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc);
+ ret = devm_request_irq(&pdev->dev, pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc);
else
- ret = request_irq(pdev->irq, ath_isr, 0, "ath9k", sc);
+ ret = devm_request_irq(&pdev->dev, pdev->irq, ath_isr, 0, "ath9k", sc);
if (ret) {
dev_err(&pdev->dev, "request_irq failed\n");
@@ -979,7 +979,7 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops);
if (ret) {
dev_err(&pdev->dev, "Failed to initialize device\n");
- goto err_init;
+ goto err_irq;
}
sc->sc_ah->msi_enabled = msi_enabled;
@@ -991,8 +991,6 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
return 0;
-err_init:
- free_irq(sc->irq, sc);
err_irq:
ieee80211_free_hw(hw);
return ret;
@@ -1006,7 +1004,6 @@ static void ath_pci_remove(struct pci_dev *pdev)
if (!is_ath9k_unloaded)
sc->sc_ah->ah_flags |= AH_UNPLUGGED;
ath9k_deinit_device(sc);
- free_irq(sc->irq, sc);
ieee80211_free_hw(sc->hw);
}
--
2.49.0Rosen Penev <rosenp@gmail.com> writes: > Avoids having to manually free. Both of these get called and removed in > probe only and are safe to convert. Erm, huh? The request_irq() change in ath_ahb_probe() is literally the same change that you sent once and that we had to revert. Not taking any more of these, sorry. Nacked-by: Toke Høiland-Jørgensen <toke@toke.dk>
On Thu, Apr 10, 2025 at 4:06 AM Toke Høiland-Jørgensen <toke@toke.dk> wrote: > > Rosen Penev <rosenp@gmail.com> writes: > > > Avoids having to manually free. Both of these get called and removed in > > probe only and are safe to convert. > > Erm, huh? The request_irq() change in ath_ahb_probe() is literally the > same change that you sent once and that we had to revert. Not taking any > more of these, sorry. You're right about this. The first change is correct as it happens before it is assigned to sc. Will send a v2 without irq changes. > > Nacked-by: Toke Høiland-Jørgensen <toke@toke.dk>
On Wed, Apr 9, 2025 at 5:41 PM Rosen Penev <rosenp@gmail.com> wrote:
>
> Avoids having to manually free. Both of these get called and removed in
> probe only and are safe to convert.
>
> devm_platform_ioremap_resource is different as it also calls
> devm_request_memory_region, which requires non overlapping memory
> regions. Luckily, that seems to be the case.
>
> Tested on a TP-Link Archer C7v2.
>
> Signed-off-by: Rosen Penev <rosenp@gmail.com>
whoops. net-next should not be in the title.
> ---
> drivers/net/wireless/ath/ath9k/ahb.c | 22 ++++++----------------
> drivers/net/wireless/ath/ath9k/pci.c | 9 +++------
> 2 files changed, 9 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath9k/ahb.c b/drivers/net/wireless/ath/ath9k/ahb.c
> index d4805e02b927..636a487bf9b4 100644
> --- a/drivers/net/wireless/ath/ath9k/ahb.c
> +++ b/drivers/net/wireless/ath/ath9k/ahb.c
> @@ -74,7 +74,6 @@ static int ath_ahb_probe(struct platform_device *pdev)
> void __iomem *mem;
> struct ath_softc *sc;
> struct ieee80211_hw *hw;
> - struct resource *res;
> const struct platform_device_id *id = platform_get_device_id(pdev);
> int irq;
> int ret = 0;
> @@ -86,16 +85,10 @@ static int ath_ahb_probe(struct platform_device *pdev)
> return -EINVAL;
> }
>
> - res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> - if (res == NULL) {
> - dev_err(&pdev->dev, "no memory resource found\n");
> - return -ENXIO;
> - }
> -
> - mem = devm_ioremap(&pdev->dev, res->start, resource_size(res));
> - if (mem == NULL) {
> + mem = devm_platform_ioremap_resource(pdev, 0);
> + if (IS_ERR(mem)) {
> dev_err(&pdev->dev, "ioremap failed\n");
> - return -ENOMEM;
> + return PTR_ERR(mem);
> }
>
> irq = platform_get_irq(pdev, 0);
> @@ -118,16 +111,16 @@ static int ath_ahb_probe(struct platform_device *pdev)
> sc->mem = mem;
> sc->irq = irq;
>
> - ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
> + ret = devm_request_irq(&pdev->dev, irq, ath_isr, IRQF_SHARED, "ath9k", sc);
> if (ret) {
> dev_err(&pdev->dev, "request_irq failed\n");
> - goto err_free_hw;
> + return ret;
> }
>
> ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
> if (ret) {
> dev_err(&pdev->dev, "failed to initialize device\n");
> - goto err_irq;
> + goto err_free_hw;
> }
>
> ah = sc->sc_ah;
> @@ -137,8 +130,6 @@ static int ath_ahb_probe(struct platform_device *pdev)
>
> return 0;
>
> - err_irq:
> - free_irq(irq, sc);
> err_free_hw:
> ieee80211_free_hw(hw);
> return ret;
> @@ -152,7 +143,6 @@ static void ath_ahb_remove(struct platform_device *pdev)
> struct ath_softc *sc = hw->priv;
>
> ath9k_deinit_device(sc);
> - free_irq(sc->irq, sc);
> ieee80211_free_hw(sc->hw);
> }
> }
> diff --git a/drivers/net/wireless/ath/ath9k/pci.c b/drivers/net/wireless/ath/ath9k/pci.c
> index 27d4034c814e..48c7cae11e37 100644
> --- a/drivers/net/wireless/ath/ath9k/pci.c
> +++ b/drivers/net/wireless/ath/ath9k/pci.c
> @@ -965,9 +965,9 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> }
>
> if (!msi_enabled)
> - ret = request_irq(pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc);
> + ret = devm_request_irq(&pdev->dev, pdev->irq, ath_isr, IRQF_SHARED, "ath9k", sc);
> else
> - ret = request_irq(pdev->irq, ath_isr, 0, "ath9k", sc);
> + ret = devm_request_irq(&pdev->dev, pdev->irq, ath_isr, 0, "ath9k", sc);
>
> if (ret) {
> dev_err(&pdev->dev, "request_irq failed\n");
> @@ -979,7 +979,7 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
> ret = ath9k_init_device(id->device, sc, &ath_pci_bus_ops);
> if (ret) {
> dev_err(&pdev->dev, "Failed to initialize device\n");
> - goto err_init;
> + goto err_irq;
> }
>
> sc->sc_ah->msi_enabled = msi_enabled;
> @@ -991,8 +991,6 @@ static int ath_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
>
> return 0;
>
> -err_init:
> - free_irq(sc->irq, sc);
> err_irq:
> ieee80211_free_hw(hw);
> return ret;
> @@ -1006,7 +1004,6 @@ static void ath_pci_remove(struct pci_dev *pdev)
> if (!is_ath9k_unloaded)
> sc->sc_ah->ah_flags |= AH_UNPLUGGED;
> ath9k_deinit_device(sc);
> - free_irq(sc->irq, sc);
> ieee80211_free_hw(sc->hw);
> }
>
> --
> 2.49.0
>
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