[PATCH 0/7] mmc/wifi/bluetooth: store owner from modules with sdio_register_driver()

[PATCH 0/7] mmc/wifi/bluetooth: store owner from modules with sdio_register_driver()

[Krzysztof Kozlowski]

Merging
=======
All further patches depend on the first patch.  Everything could go via
one tree, e.g. MMC, or the cleanup patches removing owner would wait a
cycle.

Description
===========
Modules registering driver with sdio_register_driver() might
forget to set .owner field.

Solve the problem by moving this task away from the drivers to the core
code, just like we did for platform_driver in commit 9447057eaff8
("platform_device: use a macro instead of platform_driver_register").

Best regards,
Krzysztof

---
Krzysztof Kozlowski (7):
      mmc: sdio: store owner from modules with sdio_register_driver()
      bluetooth: btmrvl_sdio: drop driver owner initialization
      bluetooth: btmtksdio: drop driver owner initialization
      wifi: ath10k: sdio: drop driver owner initialization
      wifi: brcm80211: drop driver owner initialization
      wifi: marvell: mwifiex: drop driver owner initialization
      wifi: silabs: wfx: drop driver owner initialization

 drivers/bluetooth/btmrvl_sdio.c                           | 1 -
 drivers/bluetooth/btmtksdio.c                             | 1 -
 drivers/mmc/core/sdio_bus.c                               | 9 ++++++---
 drivers/net/wireless/ath/ath10k/sdio.c                    | 1 -
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 -
 drivers/net/wireless/marvell/mwifiex/sdio.c               | 1 -
 drivers/net/wireless/silabs/wfx/bus_sdio.c                | 1 -
 include/linux/mmc/sdio_func.h                             | 5 ++++-
 8 files changed, 10 insertions(+), 10 deletions(-)
---
base-commit: 087c142b2b04898c897aa77938d05a93907150e5
change-id: 20240329-module-owner-sdio-abd5de3f1d74

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


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[PATCH 1/7] mmc: sdio: store owner from modules with sdio_register_driver()

[Krzysztof Kozlowski]

Modules registering driver with sdio_register_driver() might
forget to set .owner field.  The field is used by some of other kernel
parts for reference counting (try_module_get()), so it is expected that
drivers will set it.

Solve the problem by moving this task away from the drivers to the core
code, just like we did for platform_driver in
commit 9447057eaff8 ("platform_device: use a macro instead of
platform_driver_register").

Since many drivers forget to set the .owner, this effectively will fix
them.  Examples of fixed drivers are: ath6kl, b43, btsdio.c, ks7010,
libertas, MediaTek WiFi drivers, Realtek WiFi drivers, rsi, siano,
wilc1000, wl1251 and more.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 drivers/mmc/core/sdio_bus.c   | 9 ++++++---
 include/linux/mmc/sdio_func.h | 5 ++++-
 2 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/mmc/core/sdio_bus.c b/drivers/mmc/core/sdio_bus.c
index 71d885fbc228..c5fdfe2325f8 100644
--- a/drivers/mmc/core/sdio_bus.c
+++ b/drivers/mmc/core/sdio_bus.c
@@ -265,16 +265,19 @@ void sdio_unregister_bus(void)
 }
 
 /**
- *	sdio_register_driver - register a function driver
+ *	__sdio_register_driver - register a function driver
  *	@drv: SDIO function driver
+ *	@owner: owning module/driver
  */
-int sdio_register_driver(struct sdio_driver *drv)
+int __sdio_register_driver(struct sdio_driver *drv, struct module *owner)
 {
 	drv->drv.name = drv->name;
 	drv->drv.bus = &sdio_bus_type;
+	drv->drv.owner = owner;
+
 	return driver_register(&drv->drv);
 }
-EXPORT_SYMBOL_GPL(sdio_register_driver);
+EXPORT_SYMBOL_GPL(__sdio_register_driver);
 
 /**
  *	sdio_unregister_driver - unregister a function driver
diff --git a/include/linux/mmc/sdio_func.h b/include/linux/mmc/sdio_func.h
index 478855b8e406..fed1f5f4a8d3 100644
--- a/include/linux/mmc/sdio_func.h
+++ b/include/linux/mmc/sdio_func.h
@@ -106,7 +106,10 @@ struct sdio_driver {
 	.class = (dev_class), \
 	.vendor = SDIO_ANY_ID, .device = SDIO_ANY_ID
 
-extern int sdio_register_driver(struct sdio_driver *);
+/* use a macro to avoid include chaining to get THIS_MODULE */
+#define sdio_register_driver(drv) \
+	__sdio_register_driver(drv, THIS_MODULE)
+extern int __sdio_register_driver(struct sdio_driver *, struct module *);
 extern void sdio_unregister_driver(struct sdio_driver *);
 
 /**

-- 
2.34.1


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Re: [PATCH 1/7] mmc: sdio: store owner from modules with sdio_register_driver()

[Francesco Dolcini]

Hello Krzysztof,

On Fri, Mar 29, 2024 at 06:24:31PM +0100, Krzysztof Kozlowski wrote:
> Modules registering driver with sdio_register_driver() might
> forget to set .owner field.  The field is used by some of other kernel
                             ^^ double space here

> parts for reference counting (try_module_get()), so it is expected that
> drivers will set it.
> 
> Solve the problem by moving this task away from the drivers to the core
> code, just like we did for platform_driver in
> commit 9447057eaff8 ("platform_device: use a macro instead of
> platform_driver_register").
> 
> Since many drivers forget to set the .owner, this effectively will fix
> them.  Examples of fixed drivers are: ath6kl, b43, btsdio.c, ks7010,
       ^^ and here

> libertas, MediaTek WiFi drivers, Realtek WiFi drivers, rsi, siano,
> wilc1000, wl1251 and more.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

My nit comments are irrelevant, but given you did the same twice I felt
like letting you know.

Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>


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Re: [PATCH 1/7] mmc: sdio: store owner from modules with sdio_register_driver()

[Krzysztof Kozlowski]

On 31/03/2024 22:37, Francesco Dolcini wrote:
> Hello Krzysztof,
> 
> On Fri, Mar 29, 2024 at 06:24:31PM +0100, Krzysztof Kozlowski wrote:
>> Modules registering driver with sdio_register_driver() might
>> forget to set .owner field.  The field is used by some of other kernel
>                              ^^ double space here
> 
>> parts for reference counting (try_module_get()), so it is expected that
>> drivers will set it.
>>
>> Solve the problem by moving this task away from the drivers to the core
>> code, just like we did for platform_driver in
>> commit 9447057eaff8 ("platform_device: use a macro instead of
>> platform_driver_register").
>>
>> Since many drivers forget to set the .owner, this effectively will fix
>> them.  Examples of fixed drivers are: ath6kl, b43, btsdio.c, ks7010,
>        ^^ and here

Which is correct :). Double space is on purpose.

> 
>> libertas, MediaTek WiFi drivers, Realtek WiFi drivers, rsi, siano,
>> wilc1000, wl1251 and more.
>>
>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> My nit comments are irrelevant, but given you did the same twice I felt
> like letting you know.
> 
> Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
> 

Best regards,
Krzysztof


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[PATCH 2/7] bluetooth: btmrvl_sdio: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/bluetooth/btmrvl_sdio.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/bluetooth/btmrvl_sdio.c b/drivers/bluetooth/btmrvl_sdio.c
index d76c799553aa..85b7f2bb4259 100644
--- a/drivers/bluetooth/btmrvl_sdio.c
+++ b/drivers/bluetooth/btmrvl_sdio.c
@@ -1736,7 +1736,6 @@ static struct sdio_driver bt_mrvl_sdio = {
 	.probe		= btmrvl_sdio_probe,
 	.remove		= btmrvl_sdio_remove,
 	.drv = {
-		.owner = THIS_MODULE,
 		.coredump = btmrvl_sdio_coredump,
 		.pm = &btmrvl_sdio_pm_ops,
 	}

-- 
2.34.1


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[PATCH 3/7] bluetooth: btmtksdio: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/bluetooth/btmtksdio.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index ff4868c83cd8..8ded9ef8089a 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -1519,7 +1519,6 @@ static struct sdio_driver btmtksdio_driver = {
 	.remove		= btmtksdio_remove,
 	.id_table	= btmtksdio_table,
 	.drv = {
-		.owner = THIS_MODULE,
 		.pm = BTMTKSDIO_PM_OPS,
 	}
 };

-- 
2.34.1


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[PATCH 4/7] wifi: ath10k: sdio: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/net/wireless/ath/ath10k/sdio.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c
index 1acb9fba9a8e..cddd9e3010ee 100644
--- a/drivers/net/wireless/ath/ath10k/sdio.c
+++ b/drivers/net/wireless/ath/ath10k/sdio.c
@@ -2667,7 +2667,6 @@ static struct sdio_driver ath10k_sdio_driver = {
 	.probe = ath10k_sdio_probe,
 	.remove = ath10k_sdio_remove,
 	.drv = {
-		.owner = THIS_MODULE,
 		.pm = ATH10K_SDIO_PM_OPS,
 	},
 };

-- 
2.34.1


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Re: [PATCH 4/7] wifi: ath10k: sdio: drop driver owner initialization

[Jeff Johnson]

On 3/29/2024 10:24 AM, Krzysztof Kozlowski wrote:
> Core in sdio_register_driver() already sets the .owner, so driver does
> not need to.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>

> 
> ---
> 
> Depends on the first patch.
> ---
>  drivers/net/wireless/ath/ath10k/sdio.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/drivers/net/wireless/ath/ath10k/sdio.c b/drivers/net/wireless/ath/ath10k/sdio.c
> index 1acb9fba9a8e..cddd9e3010ee 100644
> --- a/drivers/net/wireless/ath/ath10k/sdio.c
> +++ b/drivers/net/wireless/ath/ath10k/sdio.c
> @@ -2667,7 +2667,6 @@ static struct sdio_driver ath10k_sdio_driver = {
>  	.probe = ath10k_sdio_probe,
>  	.remove = ath10k_sdio_remove,
>  	.drv = {
> -		.owner = THIS_MODULE,
>  		.pm = ATH10K_SDIO_PM_OPS,
>  	},
>  };
> 


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[PATCH 5/7] wifi: brcm80211: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
index 00679a990e3d..13391c2d82aa 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
@@ -1238,7 +1238,6 @@ static struct sdio_driver brcmf_sdmmc_driver = {
 	.name = KBUILD_MODNAME,
 	.id_table = brcmf_sdmmc_ids,
 	.drv = {
-		.owner = THIS_MODULE,
 		.pm = pm_sleep_ptr(&brcmf_sdio_pm_ops),
 		.coredump = brcmf_dev_coredump,
 	},

-- 
2.34.1


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Re: [PATCH 5/7] wifi: brcm80211: drop driver owner initialization

[Arend Van Spriel]

[-- Attachment #1.1: Type: text/plain, Size: 1037 bytes --]

On March 29, 2024 6:24:57 PM Krzysztof Kozlowski 
<krzysztof.kozlowski@linaro.org> wrote:

> Core in sdio_register_driver() already sets the .owner, so driver does
> not need to.

Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>
> ---
>
> Depends on the first patch.
> ---
> drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 -
> 1 file changed, 1 deletion(-)
>
> diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c 
> b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> index 00679a990e3d..13391c2d82aa 100644
> --- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> +++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c
> @@ -1238,7 +1238,6 @@ static struct sdio_driver brcmf_sdmmc_driver = {
>  .name = KBUILD_MODNAME,
>  .id_table = brcmf_sdmmc_ids,
>  .drv = {
> - .owner = THIS_MODULE,
>  .pm = pm_sleep_ptr(&brcmf_sdio_pm_ops),
>  .coredump = brcmf_dev_coredump,
>  },
>
> --
> 2.34.1




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[PATCH 6/7] wifi: marvell: mwifiex: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/net/wireless/marvell/mwifiex/sdio.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/marvell/mwifiex/sdio.c b/drivers/net/wireless/marvell/mwifiex/sdio.c
index e1b58ca1b3ba..588140453821 100644
--- a/drivers/net/wireless/marvell/mwifiex/sdio.c
+++ b/drivers/net/wireless/marvell/mwifiex/sdio.c
@@ -979,7 +979,6 @@ static struct sdio_driver mwifiex_sdio = {
 	.probe = mwifiex_sdio_probe,
 	.remove = mwifiex_sdio_remove,
 	.drv = {
-		.owner = THIS_MODULE,
 		.coredump = mwifiex_sdio_coredump,
 		.pm = &mwifiex_sdio_pm_ops,
 	}

-- 
2.34.1


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Re: [PATCH 6/7] wifi: marvell: mwifiex: drop driver owner initialization

[Francesco Dolcini]

On Fri, Mar 29, 2024 at 06:24:36PM +0100, Krzysztof Kozlowski wrote:
> Core in sdio_register_driver() already sets the .owner, so driver does
> not need to.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>


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Re: [PATCH 6/7] wifi: marvell: mwifiex: drop driver owner initialization

[Kalle Valo]

Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> writes:

> Core in sdio_register_driver() already sets the .owner, so driver does
> not need to.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

The preferred title format is:

wifi: mwifiex: drop driver owner initialization

But that's just cosmetics. Feel free to take this via sdio tree:

Acked-by: Kalle Valo <kvalo@kernel.org>

-- 
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[PATCH 7/7] wifi: silabs: wfx: drop driver owner initialization

[Krzysztof Kozlowski]

Core in sdio_register_driver() already sets the .owner, so driver does
not need to.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

---

Depends on the first patch.
---
 drivers/net/wireless/silabs/wfx/bus_sdio.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/net/wireless/silabs/wfx/bus_sdio.c b/drivers/net/wireless/silabs/wfx/bus_sdio.c
index 909d5f346a01..f290eecde773 100644
--- a/drivers/net/wireless/silabs/wfx/bus_sdio.c
+++ b/drivers/net/wireless/silabs/wfx/bus_sdio.c
@@ -267,7 +267,6 @@ struct sdio_driver wfx_sdio_driver = {
 	.probe = wfx_sdio_probe,
 	.remove = wfx_sdio_remove,
 	.drv = {
-		.owner = THIS_MODULE,
 		.of_match_table = wfx_sdio_of_match,
 	}
 };

-- 
2.34.1


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Re: [PATCH 7/7] wifi: silabs: wfx: drop driver owner initialization

[Kalle Valo]

Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> writes:

> Core in sdio_register_driver() already sets the .owner, so driver does
> not need to.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Also here the preferred title format is:

wifi: wfx: drop driver owner initialization

Feel free to take this via sdio tree:

Acked-by: Kalle Valo <kvalo@kernel.org>

-- 
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Re: [PATCH 0/7] mmc/wifi/bluetooth: store owner from modules with sdio_register_driver()

[Ulf Hansson]

On Fri, 29 Mar 2024 at 18:24, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> Merging
> =======
> All further patches depend on the first patch.  Everything could go via
> one tree, e.g. MMC, or the cleanup patches removing owner would wait a
> cycle.

Patch 1 applied for next, thanks!

I can certainly pick the remaining in the series through my mmc tree,
but waiting a bit to queue them up to allow some more acks to be
received.

Kind regards
Uffe


>
> Description
> ===========
> Modules registering driver with sdio_register_driver() might
> forget to set .owner field.
>
> Solve the problem by moving this task away from the drivers to the core
> code, just like we did for platform_driver in commit 9447057eaff8
> ("platform_device: use a macro instead of platform_driver_register").
>
> Best regards,
> Krzysztof
>
> ---
> Krzysztof Kozlowski (7):
>       mmc: sdio: store owner from modules with sdio_register_driver()
>       bluetooth: btmrvl_sdio: drop driver owner initialization
>       bluetooth: btmtksdio: drop driver owner initialization
>       wifi: ath10k: sdio: drop driver owner initialization
>       wifi: brcm80211: drop driver owner initialization
>       wifi: marvell: mwifiex: drop driver owner initialization
>       wifi: silabs: wfx: drop driver owner initialization
>
>  drivers/bluetooth/btmrvl_sdio.c                           | 1 -
>  drivers/bluetooth/btmtksdio.c                             | 1 -
>  drivers/mmc/core/sdio_bus.c                               | 9 ++++++---
>  drivers/net/wireless/ath/ath10k/sdio.c                    | 1 -
>  drivers/net/wireless/broadcom/brcm80211/brcmfmac/bcmsdh.c | 1 -
>  drivers/net/wireless/marvell/mwifiex/sdio.c               | 1 -
>  drivers/net/wireless/silabs/wfx/bus_sdio.c                | 1 -
>  include/linux/mmc/sdio_func.h                             | 5 ++++-
>  8 files changed, 10 insertions(+), 10 deletions(-)
> ---
> base-commit: 087c142b2b04898c897aa77938d05a93907150e5
> change-id: 20240329-module-owner-sdio-abd5de3f1d74
>
> Best regards,
> --
> Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
>

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