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driver core: make struct class.devnode() take a const * 

The devnode() in struct class should not be modifying the device that is
passed into it, so mark it as a const * and propagate the function
signature changes out into all relevant subsystems that use this
callback.

Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Justin Sanders <justin@coraid.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Cc: Liam Mark <lmark@codeaurora.org>
Cc: Laura Abbott <labbott@redhat.com>
Cc: Brian Starkey <Brian.Starkey@arm.com>
Cc: John Stultz <jstultz@google.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Cc: Maxime Ripard <mripard@kernel.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Leon Romanovsky <leon@kernel.org>
Cc: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Sean Young <sean@mess.org>
Cc: Frank Haverkamp <haver@linux.ibm.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Jason Wang <jasowang@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Anton Vorontsov <anton@enomsg.org>
Cc: Colin Cross <ccross@android.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Cc: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Cc: Xie Yongji <xieyongji@bytedance.com>
Cc: Gautam Dawar <gautam.dawar@xilinx.com>
Cc: Dan Carpenter <error27@gmail.com>
Cc: Eli Cohen <elic@nvidia.com>
Cc: Parav Pandit <parav@nvidia.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: alsa-devel@alsa-project.org
Cc: dri-devel@lists.freedesktop.org
Cc: kvm@vger.kernel.org
Cc: linaro-mm-sig@lists.linaro.org
Cc: linux-block@vger.kernel.org
Cc: linux-input@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: linux-rdma@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: virtualization@lists.linux-foundation.org
Link: https://lore.kernel.org/r/20221123122523.1332370-2-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2022-11-23 13:25:20 +01:00
parent 23680f0b7d
commit ff62b8e658
24 changed files with 29 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/x86/kernel/cpu/resctrl/pseudo_lock.c
View File

@ -1560,9 +1560,9 @@ static const struct file_operations pseudo_lock_dev_fops = {
.mmap = pseudo_lock_dev_mmap,
};
static char *pseudo_lock_devnode(struct device *dev, umode_t *mode)
static char *pseudo_lock_devnode(const struct device *dev, umode_t *mode)
{
struct rdtgroup *rdtgrp;
const struct rdtgroup *rdtgrp;
rdtgrp = dev_get_drvdata(dev);
if (mode)

2
arch/x86/kernel/cpuid.c
View File

@ -139,7 +139,7 @@ static int cpuid_device_destroy(unsigned int cpu)
return 0;
}
static char *cpuid_devnode(struct device *dev, umode_t *mode)
static char *cpuid_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/cpuid", MINOR(dev->devt));
}

2
arch/x86/kernel/msr.c
View File

@ -250,7 +250,7 @@ static int msr_device_destroy(unsigned int cpu)
return 0;
}
static char *msr_devnode(struct device *dev, umode_t *mode)
static char *msr_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "cpu/%u/msr", MINOR(dev->devt));
}

2
block/bsg.c
View File

@ -232,7 +232,7 @@ out_put_device:
}
EXPORT_SYMBOL_GPL(bsg_register_queue);
static char *bsg_devnode(struct device *dev, umode_t *mode)
static char *bsg_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "bsg/%s", dev_name(dev));
}

2
drivers/block/aoe/aoechr.c
View File

@ -273,7 +273,7 @@ static const struct file_operations aoe_fops = {
.llseek = noop_llseek,
};
static char *aoe_devnode(struct device *dev, umode_t *mode)
static char *aoe_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "etherd/%s", dev_name(dev));
}

2
drivers/char/mem.c
View File

@ -746,7 +746,7 @@ static const struct file_operations memory_fops = {
.llseek = noop_llseek,
};
static char *mem_devnode(struct device *dev, umode_t *mode)
static char *mem_devnode(const struct device *dev, umode_t *mode)
{
if (mode && devlist[MINOR(dev->devt)].mode)
*mode = devlist[MINOR(dev->devt)].mode;

4
drivers/char/misc.c
View File

@ -254,9 +254,9 @@ void misc_deregister(struct miscdevice *misc)
}
EXPORT_SYMBOL(misc_deregister);
static char *misc_devnode(struct device *dev, umode_t *mode)
static char *misc_devnode(const struct device *dev, umode_t *mode)
{
struct miscdevice *c = dev_get_drvdata(dev);
const struct miscdevice *c = dev_get_drvdata(dev);
if (mode && c->mode)
*mode = c->mode;

2
drivers/dma-buf/dma-heap.c
View File

@ -299,7 +299,7 @@ err0:
return err_ret;
}
static char *dma_heap_devnode(struct device *dev, umode_t *mode)
static char *dma_heap_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "dma_heap/%s", dev_name(dev));
}

2
drivers/gpu/drm/drm_sysfs.c
View File

@ -90,7 +90,7 @@ static void drm_sysfs_acpi_register(void) { }
static void drm_sysfs_acpi_unregister(void) { }
#endif
static char *drm_devnode(struct device *dev, umode_t *mode)
static char *drm_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "dri/%s", dev_name(dev));
}

2
drivers/infiniband/core/user_mad.c
View File

@ -1224,7 +1224,7 @@ static struct attribute *umad_class_dev_attrs[] = {
};
ATTRIBUTE_GROUPS(umad_class_dev);
static char *umad_devnode(struct device *dev, umode_t *mode)
static char *umad_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "infiniband/%s", dev_name(dev));
}

2
drivers/infiniband/core/uverbs_main.c
View File

@ -1237,7 +1237,7 @@ static void ib_uverbs_remove_one(struct ib_device *device, void *client_data)
put_device(&uverbs_dev->dev);
}
static char *uverbs_devnode(struct device *dev, umode_t *mode)
static char *uverbs_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

4
drivers/infiniband/hw/hfi1/device.c
View File

@ -72,7 +72,7 @@ const char *class_name(void)
return hfi1_class_name;
}
static char *hfi1_devnode(struct device *dev, umode_t *mode)
static char *hfi1_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0600;
@ -85,7 +85,7 @@ static const char *class_name_user(void)
return hfi1_class_name_user;
}
static char *hfi1_user_devnode(struct device *dev, umode_t *mode)
static char *hfi1_user_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

2
drivers/input/input.c
View File

@ -1913,7 +1913,7 @@ static const struct device_type input_dev_type = {
#endif
};
static char *input_devnode(struct device *dev, umode_t *mode)
static char *input_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "input/%s", dev_name(dev));
}

4
drivers/media/dvb-core/dvbdev.c
View File

@ -1018,9 +1018,9 @@ static int dvb_uevent(const struct device *dev, struct kobj_uevent_env *env)
return 0;
}
static char *dvb_devnode(struct device *dev, umode_t *mode)
static char *dvb_devnode(const struct device *dev, umode_t *mode)
{
struct dvb_device *dvbdev = dev_get_drvdata(dev);
const struct dvb_device *dvbdev = dev_get_drvdata(dev);
return kasprintf(GFP_KERNEL, "dvb/adapter%d/%s%d",
dvbdev->adapter->num, dnames[dvbdev->type], dvbdev->id);

4
drivers/media/pci/ddbridge/ddbridge-core.c
View File

@ -2716,9 +2716,9 @@ static const struct file_operations ddb_fops = {
.release = ddb_release,
};
static char *ddb_devnode(struct device *device, umode_t *mode)
static char *ddb_devnode(const struct device *device, umode_t *mode)
{
struct ddb *dev = dev_get_drvdata(device);
const struct ddb *dev = dev_get_drvdata(device);
return kasprintf(GFP_KERNEL, "ddbridge/card%d", dev->nr);
}

2
drivers/media/rc/rc-main.c
View File

@ -1017,7 +1017,7 @@ static void ir_close(struct input_dev *idev)
}
/* class for /sys/class/rc */
static char *rc_devnode(struct device *dev, umode_t *mode)
static char *rc_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "rc/%s", dev_name(dev));
}

2
drivers/misc/genwqe/card_base.c
View File

@ -1349,7 +1349,7 @@ static struct pci_driver genwqe_driver = {
* Default mode should be rw for everybody. Do not change default
* device name.
*/
static char *genwqe_devnode(struct device *dev, umode_t *mode)
static char *genwqe_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0666;

2
drivers/tty/tty_io.c
View File

@ -3494,7 +3494,7 @@ void tty_default_fops(struct file_operations *fops)
*fops = tty_fops;
}
static char *tty_devnode(struct device *dev, umode_t *mode)
static char *tty_devnode(const struct device *dev, umode_t *mode)
{
if (!mode)
return NULL;

2
drivers/usb/core/file.c
View File

@ -62,7 +62,7 @@ static struct usb_class {
struct class *class;
} *usb_class;
static char *usb_devnode(struct device *dev, umode_t *mode)
static char *usb_devnode(const struct device *dev, umode_t *mode)
{
struct usb_class_driver *drv;

2
drivers/vdpa/vdpa_user/vduse_dev.c
View File

@ -1656,7 +1656,7 @@ static const struct file_operations vduse_ctrl_fops = {
.llseek = noop_llseek,
};
static char *vduse_devnode(struct device *dev, umode_t *mode)
static char *vduse_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "vduse/%s", dev_name(dev));
}

2
drivers/vfio/vfio_main.c
View File

@ -1812,7 +1812,7 @@ EXPORT_SYMBOL(vfio_set_irqs_validate_and_prepare);
/*
* Module/class support
*/
static char *vfio_devnode(struct device *dev, umode_t *mode)
static char *vfio_devnode(const struct device *dev, umode_t *mode)
{
return kasprintf(GFP_KERNEL, "vfio/%s", dev_name(dev));
}

2
fs/pstore/pmsg.c
View File

@ -46,7 +46,7 @@ static int pmsg_major;
#undef pr_fmt
#define pr_fmt(fmt) PMSG_NAME ": " fmt
static char *pmsg_devnode(struct device *dev, umode_t *mode)
static char *pmsg_devnode(const struct device *dev, umode_t *mode)
{
if (mode)
*mode = 0220;

2
include/linux/device/class.h
View File

@ -60,7 +60,7 @@ struct class {
struct kobject *dev_kobj;
int (*dev_uevent)(const struct device *dev, struct kobj_uevent_env *env);
char *(*devnode)(struct device *dev, umode_t *mode);
char *(*devnode)(const struct device *dev, umode_t *mode);
void (*class_release)(struct class *class);
void (*dev_release)(struct device *dev);

2
sound/sound_core.c
View File

@ -30,7 +30,7 @@ MODULE_DESCRIPTION("Core sound module");
MODULE_AUTHOR("Alan Cox");
MODULE_LICENSE("GPL");
static char *sound_devnode(struct device *dev, umode_t *mode)
static char *sound_devnode(const struct device *dev, umode_t *mode)
{
if (MAJOR(dev->devt) == SOUND_MAJOR)
return NULL;