December 2019 - Linux-stable-mirror

[PATCH 3/4] USB: idmouse: fix interface sanity checks

by Johan Hovold

Make sure to use the current alternate setting when verifying the interface descriptors to avoid binding to an invalid interface. Failing to do so could cause the driver to misbehave or trigger a WARN() in usb_submit_urb() that kernels with panic_on_warn set would choke on. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Cc: stable <stable(a)vger.kernel.org> Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/usb/misc/idmouse.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c index 4afb5ddfd361..e9437a176518 100644 --- a/drivers/usb/misc/idmouse.c +++ b/drivers/usb/misc/idmouse.c @@ -322,7 +322,7 @@ static int idmouse_probe(struct usb_interface *interface, int result; /* check if we have gotten the data or the hid interface */ - iface_desc = &interface->altsetting[0]; + iface_desc = interface->cur_altsetting; if (iface_desc->desc.bInterfaceClass != 0x0A) return -ENODEV; -- 2.24.0

5 years

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[PATCH 2/4] USB: adutux: fix interface sanity check

by Johan Hovold

Make sure to use the current alternate setting when verifying the interface descriptors to avoid binding to an invalid interface. Failing to do so could cause the driver to misbehave or trigger a WARN() in usb_submit_urb() that kernels with panic_on_warn set would choke on. Fixes: 03270634e242 ("USB: Add ADU support for Ontrak ADU devices") Cc: stable <stable(a)vger.kernel.org> # 2.6.19 Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/usb/misc/adutux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index 6f5edb9fc61e..d8d157c4c271 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -669,7 +669,7 @@ static int adu_probe(struct usb_interface *interface, init_waitqueue_head(&dev->read_wait); init_waitqueue_head(&dev->write_wait); - res = usb_find_common_endpoints_reverse(&interface->altsetting[0], + res = usb_find_common_endpoints_reverse(interface->cur_altsetting, NULL, NULL, &dev->interrupt_in_endpoint, &dev->interrupt_out_endpoint); -- 2.24.0

5 years

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[PATCH 1/4] USB: atm: ueagle-atm: add missing endpoint check

by Johan Hovold

Make sure that the interrupt interface has an endpoint before trying to access its endpoint descriptors to avoid dereferencing a NULL pointer. The driver binds to the interrupt interface with interface number 0, but must not assume that this interface or its current alternate setting are the first entries in the corresponding configuration arrays. Fixes: b72458a80c75 ("[PATCH] USB: Eagle and ADI 930 usb adsl modem driver") Cc: stable <stable(a)vger.kernel.org> # 2.6.16 Signed-off-by: Johan Hovold <johan(a)kernel.org> --- drivers/usb/atm/ueagle-atm.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/drivers/usb/atm/ueagle-atm.c b/drivers/usb/atm/ueagle-atm.c index 8b0ea8c70d73..635cf0466b59 100644 --- a/drivers/usb/atm/ueagle-atm.c +++ b/drivers/usb/atm/ueagle-atm.c @@ -2124,10 +2124,11 @@ static void uea_intr(struct urb *urb) /* * Start the modem : init the data and start kernel thread */ -static int uea_boot(struct uea_softc *sc) +static int uea_boot(struct uea_softc *sc, struct usb_interface *intf) { - int ret, size; struct intr_pkt *intr; + int ret = -ENOMEM; + int size; uea_enters(INS_TO_USBDEV(sc)); @@ -2152,6 +2153,11 @@ static int uea_boot(struct uea_softc *sc) if (UEA_CHIP_VERSION(sc) == ADI930) load_XILINX_firmware(sc); + if (intf->cur_altsetting->desc.bNumEndpoints < 1) { + ret = -ENODEV; + goto err0; + } + intr = kmalloc(size, GFP_KERNEL); if (!intr) goto err0; @@ -2163,8 +2169,7 @@ static int uea_boot(struct uea_softc *sc) usb_fill_int_urb(sc->urb_int, sc->usb_dev, usb_rcvintpipe(sc->usb_dev, UEA_INTR_PIPE), intr, size, uea_intr, sc, - sc->usb_dev->actconfig->interface[0]->altsetting[0]. - endpoint[0].desc.bInterval); + intf->cur_altsetting->endpoint[0].desc.bInterval); ret = usb_submit_urb(sc->urb_int, GFP_KERNEL); if (ret < 0) { @@ -2179,6 +2184,7 @@ static int uea_boot(struct uea_softc *sc) sc->kthread = kthread_create(uea_kthread, sc, "ueagle-atm"); if (IS_ERR(sc->kthread)) { uea_err(INS_TO_USBDEV(sc), "failed to create thread\n"); + ret = PTR_ERR(sc->kthread); goto err2; } @@ -2193,7 +2199,7 @@ static int uea_boot(struct uea_softc *sc) kfree(intr); err0: uea_leaves(INS_TO_USBDEV(sc)); - return -ENOMEM; + return ret; } /* @@ -2548,7 +2554,7 @@ static int uea_bind(struct usbatm_data *usbatm, struct usb_interface *intf, } } - ret = uea_boot(sc); + ret = uea_boot(sc, intf); if (ret < 0) goto error; -- 2.24.0

5 years

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patch "usb: common: usb-conn-gpio: Don't log an error on probe deferral" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usb: common: usb-conn-gpio: Don't log an error on probe deferral to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 59120962e4be4f72be537adb17da6881c4b3797c Mon Sep 17 00:00:00 2001 From: Bryan O'Donoghue <bryan.odonoghue(a)linaro.org> Date: Thu, 28 Nov 2019 13:43:57 +0000 Subject: usb: common: usb-conn-gpio: Don't log an error on probe deferral This patch makes the printout of the error message for failing to get a VBUS regulator handle conditional on the error code being something other than -EPROBE_DEFER. Deferral is a normal thing, we don't need an error message for this. Cc: Chunfeng Yun <chunfeng.yun(a)mediatek.com> Cc: Nagarjuna Kristam <nkristam(a)nvidia.com> Cc: Linus Walleij <linus.walleij(a)linaro.org> Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> Cc: linux-usb(a)vger.kernel.org Signed-off-by: Bryan O'Donoghue <bryan.odonoghue(a)linaro.org> Cc: stable <stable(a)vger.kernel.org> Link: https://lore.kernel.org/r/20191128134358.3880498-2-bryan.odonoghue@linaro.o… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/common/usb-conn-gpio.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/usb/common/usb-conn-gpio.c b/drivers/usb/common/usb-conn-gpio.c index 87338f9eb5be..ed204cbb63ea 100644 --- a/drivers/usb/common/usb-conn-gpio.c +++ b/drivers/usb/common/usb-conn-gpio.c @@ -156,7 +156,8 @@ static int usb_conn_probe(struct platform_device *pdev) info->vbus = devm_regulator_get(dev, "vbus"); if (IS_ERR(info->vbus)) { - dev_err(dev, "failed to get vbus\n"); + if (PTR_ERR(info->vbus) != -EPROBE_DEFER) + dev_err(dev, "failed to get vbus\n"); return PTR_ERR(info->vbus); } -- 2.24.0

5 years

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patch "usb: mon: Fix a deadlock in usbmon between mmap and read" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usb: mon: Fix a deadlock in usbmon between mmap and read to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 19e6317d24c25ee737c65d1ffb7483bdda4bb54a Mon Sep 17 00:00:00 2001 From: Pete Zaitcev <zaitcev(a)redhat.com> Date: Wed, 4 Dec 2019 20:39:41 -0600 Subject: usb: mon: Fix a deadlock in usbmon between mmap and read The problem arises because our read() function grabs a lock of the circular buffer, finds something of interest, then invokes copy_to_user() straight from the buffer, which in turn takes mm->mmap_sem. In the same time, the callback mon_bin_vma_fault() is invoked under mm->mmap_sem. It attempts to take the fetch lock and deadlocks. This patch does away with protecting of our page list with any semaphores, and instead relies on the kernel not close the device while mmap is active in a process. In addition, we prohibit re-sizing of a buffer while mmap is active. This way, when (now unlocked) fault is processed, it works with the page that is intended to be mapped-in, and not some other random page. Note that this may have an ABI impact, but hopefully no legitimate program is this wrong. Signed-off-by: Pete Zaitcev <zaitcev(a)redhat.com> Reported-by: syzbot+56f9673bb4cdcbeb0e92(a)syzkaller.appspotmail.com Reviewed-by: Alan Stern <stern(a)rowland.harvard.edu> Fixes: 46eb14a6e158 ("USB: fix usbmon BUG trigger") Cc: <stable(a)vger.kernel.org> Link: https://lore.kernel.org/r/20191204203941.3503452b@suzdal.zaitcev.lan Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/mon/mon_bin.c | 32 +++++++++++++++++++++----------- 1 file changed, 21 insertions(+), 11 deletions(-) diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index ac2b4fcc265f..f48a23adbc35 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -1039,12 +1039,18 @@ static long mon_bin_ioctl(struct file *file, unsigned int cmd, unsigned long arg mutex_lock(&rp->fetch_lock); spin_lock_irqsave(&rp->b_lock, flags); - mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE); - kfree(rp->b_vec); - rp->b_vec = vec; - rp->b_size = size; - rp->b_read = rp->b_in = rp->b_out = rp->b_cnt = 0; - rp->cnt_lost = 0; + if (rp->mmap_active) { + mon_free_buff(vec, size/CHUNK_SIZE); + kfree(vec); + ret = -EBUSY; + } else { + mon_free_buff(rp->b_vec, rp->b_size/CHUNK_SIZE); + kfree(rp->b_vec); + rp->b_vec = vec; + rp->b_size = size; + rp->b_read = rp->b_in = rp->b_out = rp->b_cnt = 0; + rp->cnt_lost = 0; + } spin_unlock_irqrestore(&rp->b_lock, flags); mutex_unlock(&rp->fetch_lock); } @@ -1216,13 +1222,21 @@ mon_bin_poll(struct file *file, struct poll_table_struct *wait) static void mon_bin_vma_open(struct vm_area_struct *vma) { struct mon_reader_bin *rp = vma->vm_private_data; + unsigned long flags; + + spin_lock_irqsave(&rp->b_lock, flags); rp->mmap_active++; + spin_unlock_irqrestore(&rp->b_lock, flags); } static void mon_bin_vma_close(struct vm_area_struct *vma) { + unsigned long flags; + struct mon_reader_bin *rp = vma->vm_private_data; + spin_lock_irqsave(&rp->b_lock, flags); rp->mmap_active--; + spin_unlock_irqrestore(&rp->b_lock, flags); } /* @@ -1234,16 +1248,12 @@ static vm_fault_t mon_bin_vma_fault(struct vm_fault *vmf) unsigned long offset, chunk_idx; struct page *pageptr; - mutex_lock(&rp->fetch_lock); offset = vmf->pgoff << PAGE_SHIFT; - if (offset >= rp->b_size) { - mutex_unlock(&rp->fetch_lock); + if (offset >= rp->b_size) return VM_FAULT_SIGBUS; - } chunk_idx = offset / CHUNK_SIZE; pageptr = rp->b_vec[chunk_idx].pg; get_page(pageptr); - mutex_unlock(&rp->fetch_lock); vmf->page = pageptr; return 0; } -- 2.24.0

5 years

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patch "usb: core: urb: fix URB structure initialization function" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usb: core: urb: fix URB structure initialization function to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 1cd17f7f0def31e3695501c4f86cd3faf8489840 Mon Sep 17 00:00:00 2001 From: Emiliano Ingrassia <ingrassia(a)epigenesys.com> Date: Wed, 27 Nov 2019 17:03:55 +0100 Subject: usb: core: urb: fix URB structure initialization function Explicitly initialize URB structure urb_list field in usb_init_urb(). This field can be potentially accessed uninitialized and its initialization is coherent with the usage of list_del_init() in usb_hcd_unlink_urb_from_ep() and usb_giveback_urb_bh() and its explicit initialization in usb_hcd_submit_urb() error path. Signed-off-by: Emiliano Ingrassia <ingrassia(a)epigenesys.com> Cc: stable <stable(a)vger.kernel.org> Link: https://lore.kernel.org/r/20191127160355.GA27196@ingrassia.epigenesys.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/core/urb.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c index 0eab79f82ce4..da923ec17612 100644 --- a/drivers/usb/core/urb.c +++ b/drivers/usb/core/urb.c @@ -45,6 +45,7 @@ void usb_init_urb(struct urb *urb) if (urb) { memset(urb, 0, sizeof(*urb)); kref_init(&urb->kref); + INIT_LIST_HEAD(&urb->urb_list); INIT_LIST_HEAD(&urb->anchor_list); } } -- 2.24.0

5 years

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patch "usb: typec: fix use after free in typec_register_port()" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usb: typec: fix use after free in typec_register_port() to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 5c388abefda0d92355714010c0199055c57ab6c7 Mon Sep 17 00:00:00 2001 From: Wen Yang <wenyang(a)linux.alibaba.com> Date: Tue, 26 Nov 2019 22:04:52 +0800 Subject: usb: typec: fix use after free in typec_register_port() MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit We can't use "port->sw" and/or "port->mux" after it has been freed. Fixes: 23481121c81d ("usb: typec: class: Don't use port parent for getting mux handles") Signed-off-by: Wen Yang <wenyang(a)linux.alibaba.com> Cc: stable <stable(a)vger.kernel.org> Cc: linux-usb(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Acked-by: Heikki Krogerus <heikki.krogerus(a)linux.intel.com> Link: https://lore.kernel.org/r/20191126140452.14048-1-wenyang@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/typec/class.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c index 7ece6ca6e690..91d62276b56f 100644 --- a/drivers/usb/typec/class.c +++ b/drivers/usb/typec/class.c @@ -1612,14 +1612,16 @@ struct typec_port *typec_register_port(struct device *parent, port->sw = typec_switch_get(&port->dev); if (IS_ERR(port->sw)) { + ret = PTR_ERR(port->sw); put_device(&port->dev); - return ERR_CAST(port->sw); + return ERR_PTR(ret); } port->mux = typec_mux_get(&port->dev, NULL); if (IS_ERR(port->mux)) { + ret = PTR_ERR(port->mux); put_device(&port->dev); - return ERR_CAST(port->mux); + return ERR_PTR(ret); } ret = device_add(&port->dev); -- 2.24.0

5 years

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patch "usb: roles: fix a potential use after free" added to usb-linus

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled usb: roles: fix a potential use after free to my usb git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git in the usb-linus branch. The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.) The patch will hopefully also be merged in Linus's tree for the next -rc kernel release. If you have any questions about this process, please let me know. >From 1848a543191ae32e558bb0a5974ae7c38ebd86fc Mon Sep 17 00:00:00 2001 From: Wen Yang <wenyang(a)linux.alibaba.com> Date: Sun, 24 Nov 2019 22:22:36 +0800 Subject: usb: roles: fix a potential use after free Free the sw structure only after we are done using it. This patch just moves the put_device() down a bit to avoid the use after free. Fixes: 5c54fcac9a9d ("usb: roles: Take care of driver module reference counting") Signed-off-by: Wen Yang <wenyang(a)linux.alibaba.com> Reviewed-by: Heikki Krogerus <heikki.krogerus(a)linux.intel.com> Reviewed-by: Peter Chen <peter.chen(a)nxp.com> Cc: stable <stable(a)vger.kernel.org> Cc: Hans de Goede <hdegoede(a)redhat.com> Cc: Chunfeng Yun <chunfeng.yun(a)mediatek.com> Cc: Suzuki K Poulose <suzuki.poulose(a)arm.com> Cc: linux-usb(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Link: https://lore.kernel.org/r/20191124142236.25671-1-wenyang@linux.alibaba.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/usb/roles/class.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c index 8273126ffdf4..63a00ff26655 100644 --- a/drivers/usb/roles/class.c +++ b/drivers/usb/roles/class.c @@ -169,8 +169,8 @@ EXPORT_SYMBOL_GPL(fwnode_usb_role_switch_get); void usb_role_switch_put(struct usb_role_switch *sw) { if (!IS_ERR_OR_NULL(sw)) { - put_device(&sw->dev); module_put(sw->dev.parent->driver->owner); + put_device(&sw->dev); } } EXPORT_SYMBOL_GPL(usb_role_switch_put); -- 2.24.0

5 years

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[PATCH v8 17/26] media/v4l2-core: set pages dirty upon releasing DMA buffers

by John Hubbard

After DMA is complete, and the device and CPU caches are synchronized, it's still required to mark the CPU pages as dirty, if the data was coming from the device. However, this driver was just issuing a bare put_page() call, without any set_page_dirty*() call. Fix the problem, by calling set_page_dirty_lock() if the CPU pages were potentially receiving data from the device. Reviewed-by: Christoph Hellwig <hch(a)lst.de> Acked-by: Hans Verkuil <hverkuil-cisco(a)xs4all.nl> Cc: Mauro Carvalho Chehab <mchehab(a)kernel.org> Cc: <stable(a)vger.kernel.org> Signed-off-by: John Hubbard <jhubbard(a)nvidia.com> --- drivers/media/v4l2-core/videobuf-dma-sg.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c index 66a6c6c236a7..28262190c3ab 100644 --- a/drivers/media/v4l2-core/videobuf-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -349,8 +349,11 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma) BUG_ON(dma->sglen); if (dma->pages) { - for (i = 0; i < dma->nr_pages; i++) + for (i = 0; i < dma->nr_pages; i++) { + if (dma->direction == DMA_FROM_DEVICE) + set_page_dirty_lock(dma->pages[i]); put_page(dma->pages[i]); + } kfree(dma->pages); dma->pages = NULL; } -- 2.24.0

5 years

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[PATCH v4 1/6] i3c: master: make sure ->boardinfo is initialized in add_i3c_dev_locked()

by Przemysław Gaj

From: Vitor Soares <vitor.soares(a)synopsys.com> The newdev->boardinfo assignment was missing in i3c_master_add_i3c_dev_locked() and hence the ->of_node info isn't propagated to i3c_dev_desc. Fix this by trying to initialize device i3c_dev_boardinfo if available. Cc: <stable(a)vger.kernel.org> Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure") Signed-off-by: Vitor Soares <vitor.soares(a)synopsys.com> Signed-off-by: Przemyslaw Gaj <pgaj(a)cadence.com> --- Change in v4: - Remove addrstatus check, this will be sent as a separate patch Change in v3: - None Changes in v2: - Change commit message - Change i3c_master_search_i3c_boardinfo(newdev) to i3c_master_init_i3c_dev_boardinfo(newdev) - Add fixes, stable tags --- drivers/i3c/master.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) mode change 100644 => 100755 drivers/i3c/master.c diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 043691656245..5c06c41e6660 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -1774,6 +1774,22 @@ i3c_master_search_i3c_dev_duplicate(struct i3c_dev_desc *refdev) return NULL; } +static void i3c_master_init_i3c_dev_boardinfo(struct i3c_dev_desc *dev) +{ + struct i3c_master_controller *master = i3c_dev_get_master(dev); + struct i3c_dev_boardinfo *boardinfo; + + if (dev->boardinfo) + return; + + list_for_each_entry(boardinfo, &master->boardinfo.i3c, node) { + if (dev->info.pid == boardinfo->pid) { + dev->boardinfo = boardinfo; + return; + } + } +} + /** * i3c_master_add_i3c_dev_locked() - add an I3C slave to the bus * @master: master used to send frames on the bus @@ -1854,6 +1870,8 @@ int i3c_master_add_i3c_dev_locked(struct i3c_master_controller *master, if (ret) goto err_detach_dev; + i3c_master_init_i3c_dev_boardinfo(newdev); + /* * Depending on our previous state, the expected dynamic address might * differ: -- 2.14.0

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