V4L/DVB (9521): V4L: struct device - replace bus_id with dev_name(), dev_set_name()
This patch is part of a larger patch series which will remove
the "char bus_id[20]" name string from struct device. The device
name is managed in the kobject anyway, and without any size
limitation, and just needlessly copied into "struct device".
To set and read the device name dev_name(dev) and dev_set_name(dev)
must be used. If your code uses static kobjects, which it shouldn't
do, "const char *init_name" can be used to statically provide the
name the registered device should have. At registration time, the
init_name field is cleared, to enforce the use of dev_name(dev) to
access the device name at a later time.
We need to get rid of all occurrences of bus_id in the entire tree
to be able to enable the new interface. Please apply this patch,
and possibly convert any remaining remaining occurrences of bus_id.
We want to submit a patch to -next, which will remove bus_id from
"struct device", to find the remaining pieces to convert, and finally
switch over to the new api, which will remove the 20 bytes array
and does no longer have a size limitation.
Thanks,
Kay
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/bt8xx/bttv-gpio.c b/drivers/media/video/bt8xx/bttv-gpio.c
index dce6dae..74c325e 100644
--- a/drivers/media/video/bt8xx/bttv-gpio.c
+++ b/drivers/media/video/bt8xx/bttv-gpio.c
@@ -42,7 +42,7 @@
struct bttv_sub_driver *sub = to_bttv_sub_drv(drv);
int len = strlen(sub->wanted);
- if (0 == strncmp(dev->bus_id, sub->wanted, len))
+ if (0 == strncmp(dev_name(dev), sub->wanted, len))
return 1;
return 0;
}
@@ -91,15 +91,14 @@
sub->dev.parent = &core->pci->dev;
sub->dev.bus = &bttv_sub_bus_type;
sub->dev.release = release_sub_device;
- snprintf(sub->dev.bus_id,sizeof(sub->dev.bus_id),"%s%d",
- name, core->nr);
+ dev_set_name(&sub->dev, "%s%d", name, core->nr);
err = device_register(&sub->dev);
if (0 != err) {
kfree(sub);
return err;
}
- printk("bttv%d: add subdevice \"%s\"\n", core->nr, sub->dev.bus_id);
+ printk("bttv%d: add subdevice \"%s\"\n", core->nr, dev_name(&sub->dev));
list_add_tail(&sub->list,&core->subs);
return 0;
}
diff --git a/drivers/media/video/bt8xx/bttv.h b/drivers/media/video/bt8xx/bttv.h
index 46cb90e..bc2c884 100644
--- a/drivers/media/video/bt8xx/bttv.h
+++ b/drivers/media/video/bt8xx/bttv.h
@@ -308,7 +308,7 @@
struct bttv_sub_driver {
struct device_driver drv;
- char wanted[BUS_ID_SIZE];
+ char wanted[20];
int (*probe)(struct bttv_sub_device *sub);
void (*remove)(struct bttv_sub_device *sub);
};
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index 4ea1f1e..415dff8 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -1271,7 +1271,7 @@
strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
- strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
+ strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info));
cap->version = EM28XX_VERSION_CODE;
@@ -1424,7 +1424,7 @@
strlcpy(cap->driver, "em28xx", sizeof(cap->driver));
strlcpy(cap->card, em28xx_boards[dev->model].name, sizeof(cap->card));
- strlcpy(cap->bus_info, dev->udev->dev.bus_id, sizeof(cap->bus_info));
+ strlcpy(cap->bus_info, dev_name(&dev->udev->dev), sizeof(cap->bus_info));
cap->version = EM28XX_VERSION_CODE;
cap->capabilities = V4L2_CAP_TUNER;
diff --git a/drivers/media/video/et61x251/et61x251_core.c b/drivers/media/video/et61x251/et61x251_core.c
index 9d0ef96..83c0711 100644
--- a/drivers/media/video/et61x251/et61x251_core.c
+++ b/drivers/media/video/et61x251/et61x251_core.c
@@ -1581,7 +1581,7 @@
strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card));
if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0)
- strlcpy(cap.bus_info, cam->usbdev->dev.bus_id,
+ strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev),
sizeof(cap.bus_info));
if (copy_to_user(arg, &cap, sizeof(cap)))
diff --git a/drivers/media/video/ir-kbd-i2c.c b/drivers/media/video/ir-kbd-i2c.c
index efe8499..d4658c5 100644
--- a/drivers/media/video/ir-kbd-i2c.c
+++ b/drivers/media/video/ir-kbd-i2c.c
@@ -385,10 +385,10 @@
goto err_out_detach;
}
- /* Phys addr can only be set after attaching (for ir->c.dev.bus_id) */
+ /* Phys addr can only be set after attaching (for ir->c.dev) */
snprintf(ir->phys, sizeof(ir->phys), "%s/%s/ir0",
- ir->c.adapter->dev.bus_id,
- ir->c.dev.bus_id);
+ dev_name(&ir->c.adapter->dev),
+ dev_name(&ir->c.dev));
/* init + register input device */
ir_input_init(input_dev, &ir->ir, ir_type, ir->ir_codes);
diff --git a/drivers/media/video/pvrusb2/pvrusb2-hdw.c b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
index 5b81ba4..4358079 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-hdw.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-hdw.c
@@ -2395,7 +2395,7 @@
scnprintf(hdw->bus_info,sizeof(hdw->bus_info),
"usb %s address %d",
- hdw->usb_dev->dev.bus_id,
+ dev_name(&hdw->usb_dev->dev),
hdw->usb_dev->devnum);
ifnum = hdw->usb_intf->cur_altsetting->desc.bInterfaceNumber;
diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
index 733680f..e641cd9 100644
--- a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
+++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c
@@ -628,10 +628,10 @@
class_dev->class = &class_ptr->class;
if (pvr2_hdw_get_sn(sfp->channel.hdw)) {
- snprintf(class_dev->bus_id, BUS_ID_SIZE, "sn-%lu",
+ dev_set_name(class_dev, "sn-%lu",
pvr2_hdw_get_sn(sfp->channel.hdw));
} else if (pvr2_hdw_get_unit_number(sfp->channel.hdw) >= 0) {
- snprintf(class_dev->bus_id, BUS_ID_SIZE, "unit-%c",
+ dev_set_name(class_dev, "unit-%c",
pvr2_hdw_get_unit_number(sfp->channel.hdw) + 'a');
} else {
kfree(class_dev);
diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c
index 536b1a9..63bc0a6 100644
--- a/drivers/media/video/sh_mobile_ceu_camera.c
+++ b/drivers/media/video/sh_mobile_ceu_camera.c
@@ -616,7 +616,7 @@
/* request irq */
err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED,
- pdev->dev.bus_id, pcdev);
+ dev_name(&pdev->dev), pcdev);
if (err) {
dev_err(&pdev->dev, "Unable to register CEU interrupt.\n");
goto exit_release_mem;
@@ -633,8 +633,8 @@
pcdev->ici.priv = pcdev;
pcdev->ici.dev.parent = &pdev->dev;
pcdev->ici.nr = pdev->id;
- pcdev->ici.drv_name = pdev->dev.bus_id,
- pcdev->ici.ops = &sh_mobile_ceu_host_ops,
+ pcdev->ici.drv_name = dev_name(&pdev->dev);
+ pcdev->ici.ops = &sh_mobile_ceu_host_ops;
err = soc_camera_host_register(&pcdev->ici);
if (err)
diff --git a/drivers/media/video/sn9c102/sn9c102_core.c b/drivers/media/video/sn9c102/sn9c102_core.c
index fcd2b62..01a8efb8 100644
--- a/drivers/media/video/sn9c102/sn9c102_core.c
+++ b/drivers/media/video/sn9c102/sn9c102_core.c
@@ -2162,7 +2162,7 @@
strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card));
if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0)
- strlcpy(cap.bus_info, cam->usbdev->dev.bus_id,
+ strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev),
sizeof(cap.bus_info));
if (copy_to_user(arg, &cap, sizeof(cap)))
diff --git a/drivers/media/video/soc_camera.c b/drivers/media/video/soc_camera.c
index 66ebe59..28cf5c9 100644
--- a/drivers/media/video/soc_camera.c
+++ b/drivers/media/video/soc_camera.c
@@ -783,7 +783,7 @@
return -EINVAL;
/* Number might be equal to the platform device ID */
- sprintf(ici->dev.bus_id, "camera_host%d", ici->nr);
+ dev_set_name(&ici->dev, "camera_host%d", ici->nr);
mutex_lock(&list_lock);
list_for_each_entry(ix, &hosts, list) {
@@ -867,8 +867,7 @@
icd->devnum = num;
icd->dev.bus = &soc_camera_bus_type;
- snprintf(icd->dev.bus_id, sizeof(icd->dev.bus_id),
- "%u-%u", icd->iface, icd->devnum);
+ dev_set_name(&icd->dev, "%u-%u", icd->iface, icd->devnum);
icd->dev.release = dummy_release;
diff --git a/drivers/media/video/usbvision/usbvision-video.c b/drivers/media/video/usbvision/usbvision-video.c
index 062819c..48c8c43 100644
--- a/drivers/media/video/usbvision/usbvision-video.c
+++ b/drivers/media/video/usbvision/usbvision-video.c
@@ -523,7 +523,7 @@
strlcpy(vc->card,
usbvision_device_data[usbvision->DevModel].ModelString,
sizeof(vc->card));
- strlcpy(vc->bus_info, usbvision->dev->dev.bus_id,
+ strlcpy(vc->bus_info, dev_name(&usbvision->dev->dev),
sizeof(vc->bus_info));
vc->version = USBVISION_DRIVER_VERSION;
vc->capabilities = V4L2_CAP_VIDEO_CAPTURE |
diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c
index ead6d18..682f48a 100644
--- a/drivers/media/video/v4l2-dev.c
+++ b/drivers/media/video/v4l2-dev.c
@@ -339,7 +339,7 @@
vfd->dev.devt = MKDEV(VIDEO_MAJOR, vfd->minor);
if (vfd->parent)
vfd->dev.parent = vfd->parent;
- sprintf(vfd->dev.bus_id, "%s%d", name_base, nr);
+ dev_set_name(&vfd->dev, "%s%d", name_base, nr);
ret = device_register(&vfd->dev);
if (ret < 0) {
printk(KERN_ERR "%s: device_register failed\n", __func__);
diff --git a/drivers/media/video/zc0301/zc0301_core.c b/drivers/media/video/zc0301/zc0301_core.c
index 9fc5817..9d00e60 100644
--- a/drivers/media/video/zc0301/zc0301_core.c
+++ b/drivers/media/video/zc0301/zc0301_core.c
@@ -1020,7 +1020,7 @@
strlcpy(cap.card, cam->v4ldev->name, sizeof(cap.card));
if (usb_make_path(cam->usbdev, cap.bus_info, sizeof(cap.bus_info)) < 0)
- strlcpy(cap.bus_info, cam->usbdev->dev.bus_id,
+ strlcpy(cap.bus_info, dev_name(&cam->usbdev->dev),
sizeof(cap.bus_info));
if (copy_to_user(arg, &cap, sizeof(cap)))