6.15-stable review patch. If anyone has any objections, please let me know.
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From: Greg Kroah-Hartman gregkh@linuxfoundation.org
[ Upstream commit 62f134ab190c5fd5c9f68fe638ad8e13bb8a4cb4 ]
In commit d69d80484598 ("driver core: have match() callback in struct bus_type take a const *"), the match bus callback was changed to have the driver be a const pointer. Unfortunately that const attribute was thrown away when container_of() is called, which is not correct and was not caught by the compiler due to how container_of() is implemented. Fix this up by correctly preserving the const attribute of the driver passed to the bus match function which requires the hdac_driver match function to also take a const pointer for the driver structure.
Cc: Jaroslav Kysela perex@perex.cz Cc: Takashi Iwai tiwai@suse.com Fixes: d69d80484598 ("driver core: have match() callback in struct bus_type take a const *") Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Link: https://patch.msgid.link/2025052204-hyphen-thermal-3e72@gregkh Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- include/sound/hdaudio.h | 4 ++-- sound/core/seq_device.c | 2 +- sound/hda/hda_bus_type.c | 6 +++--- sound/pci/hda/hda_bind.c | 4 ++-- 4 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/include/sound/hdaudio.h b/include/sound/hdaudio.h index b098ceadbe74b..9a70048adbc06 100644 --- a/include/sound/hdaudio.h +++ b/include/sound/hdaudio.h @@ -223,7 +223,7 @@ struct hdac_driver { struct device_driver driver; int type; const struct hda_device_id *id_table; - int (*match)(struct hdac_device *dev, struct hdac_driver *drv); + int (*match)(struct hdac_device *dev, const struct hdac_driver *drv); void (*unsol_event)(struct hdac_device *dev, unsigned int event);
/* fields used by ext bus APIs */ @@ -235,7 +235,7 @@ struct hdac_driver { #define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
const struct hda_device_id * -hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv); +hdac_get_device_id(struct hdac_device *hdev, const struct hdac_driver *drv);
/* * Bus verb operators diff --git a/sound/core/seq_device.c b/sound/core/seq_device.c index 4492be5d2317c..bac9f86037342 100644 --- a/sound/core/seq_device.c +++ b/sound/core/seq_device.c @@ -43,7 +43,7 @@ MODULE_LICENSE("GPL"); static int snd_seq_bus_match(struct device *dev, const struct device_driver *drv) { struct snd_seq_device *sdev = to_seq_dev(dev); - struct snd_seq_driver *sdrv = to_seq_drv(drv); + const struct snd_seq_driver *sdrv = to_seq_drv(drv);
return strcmp(sdrv->id, sdev->id) == 0 && sdrv->argsize == sdev->argsize; diff --git a/sound/hda/hda_bus_type.c b/sound/hda/hda_bus_type.c index 7545ace7b0ee4..eb72a7af2e56e 100644 --- a/sound/hda/hda_bus_type.c +++ b/sound/hda/hda_bus_type.c @@ -21,7 +21,7 @@ MODULE_LICENSE("GPL"); * driver id_table and returns the matching device id entry. */ const struct hda_device_id * -hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv) +hdac_get_device_id(struct hdac_device *hdev, const struct hdac_driver *drv) { if (drv->id_table) { const struct hda_device_id *id = drv->id_table; @@ -38,7 +38,7 @@ hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv) } EXPORT_SYMBOL_GPL(hdac_get_device_id);
-static int hdac_codec_match(struct hdac_device *dev, struct hdac_driver *drv) +static int hdac_codec_match(struct hdac_device *dev, const struct hdac_driver *drv) { if (hdac_get_device_id(dev, drv)) return 1; @@ -49,7 +49,7 @@ static int hdac_codec_match(struct hdac_device *dev, struct hdac_driver *drv) static int hda_bus_match(struct device *dev, const struct device_driver *drv) { struct hdac_device *hdev = dev_to_hdac_dev(dev); - struct hdac_driver *hdrv = drv_to_hdac_driver(drv); + const struct hdac_driver *hdrv = drv_to_hdac_driver(drv);
if (hdev->type != hdrv->type) return 0; diff --git a/sound/pci/hda/hda_bind.c b/sound/pci/hda/hda_bind.c index 9521e5e0e6e6f..1fef350d821ef 100644 --- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -18,10 +18,10 @@ /* * find a matching codec id */ -static int hda_codec_match(struct hdac_device *dev, struct hdac_driver *drv) +static int hda_codec_match(struct hdac_device *dev, const struct hdac_driver *drv) { struct hda_codec *codec = container_of(dev, struct hda_codec, core); - struct hda_codec_driver *driver = + const struct hda_codec_driver *driver = container_of(drv, struct hda_codec_driver, core); const struct hda_device_id *list; /* check probe_id instead of vendor_id if set */