linux-stable.git/drivers/usb/phy, branch linux-5.10.y

usb: phy: Initialize struct usb_phy list_head

2026-01-19T12:11:40+00:00

commit c69ff68b097b0f53333114f1b2c3dc128f389596 upstream.

As part of the registration of a new 'struct usb_phy' with the USB PHY core
via either usb_add_phy(struct usb_phy *x, ...) or usb_add_phy_dev(struct
usb_phy *x) these functions call list_add_tail(&x->head, phy_list) in
order for the new instance x to be stored in phy_list, a static list
kept internally by the core.

After 7d21114dc6a2 ("usb: phy: Introduce one extcon device into usb phy")
when executing either of the registration functions above it is possible
that usb_add_extcon() fails, leading to either function returning before
the call to list_add_tail(), leaving x->head uninitialized.

Then, when a driver tries to undo the failed registration by calling
usb_remove_phy(struct usb_phy *x) there will be an unconditional call to
list_del(&x->head) acting on an uninitialized variable, and thus a
possible NULL pointer dereference.

Fix this by initializing x->head before usb_add_extcon() has a
chance to fail. Note that this was not needed before 7d21114dc6a2 since
list_add_phy() was executed unconditionally and it guaranteed that x->head
was initialized.

Fixes: 7d21114dc6a2 ("usb: phy: Introduce one extcon device into usb phy")
Cc: stable 
Signed-off-by: Diogo Ivo 
Link: https://patch.msgid.link/20251121-diogo-smaug_typec-v2-1-5c37c1169d57@tecnico.ulisboa.pt
Signed-off-by: Greg Kroah-Hartman

usb: phy: twl6030: Fix incorrect type for ret

2025-10-29T13:01:05+00:00

[ Upstream commit b570b346ddd727c4b41743a6a2f49e7217c5317f ]

In the twl6030_usb_probe(), the variable ret is declared as
a u32 type. However, since ret may receive -ENODEV when accepting
the return value of omap_usb2_set_comparator().Therefore, its type
should be changed to int.

Fixes: 0e98de67bacba ("usb: otg: make twl6030_usb as a comparator driver to omap_usb2")
Signed-off-by: Xichao Zhao 
Link: https://lore.kernel.org/r/20250822092224.30645-1-zhao.xichao@vivo.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: phy: mxs: disconnect line when USB charger is attached

2025-08-28T14:22:31+00:00

[ Upstream commit 87ed257acb0934e08644568df6495988631afd4c ]

For mxs PHY, if there is a vbus but the bus is not enumerated, we need
to force the dp/dm as SE0 from the controller side. If not, there is
possible USB wakeup due to unstable dp/dm, since there is possible no
pull on dp/dm, such as there is a USB charger on the port.

Signed-off-by: Xu Yang 
Acked-by: Peter Chen 
Link: https://lore.kernel.org/r/20230627110353.1879477-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: phy: Fix API devm_usb_put_phy() can not release the phy

2024-11-08T15:22:02+00:00

commit fdce49b5da6e0fb6d077986dec3e90ef2b094b50 upstream.

For devm_usb_put_phy(), its comment says it needs to invoke usb_put_phy()
to release the phy, but it does not do that actually, so it can not fully
undo what the API devm_usb_get_phy() does, that is wrong, fixed by using
devres_release() instead of devres_destroy() within the API.

Fixes: cedf8602373a ("usb: phy: move bulk of otg/otg.c to phy/phy.c")
Cc: stable@vger.kernel.org
Signed-off-by: Zijun Hu 
Link: https://lore.kernel.org/r/20241020-usb_phy_fix-v1-1-7f79243b8e1e@quicinc.com
Signed-off-by: Greg Kroah-Hartman

Revert "usb: phy: generic: Get the vbus supply"

2024-04-13T10:59:30+00:00

[ Upstream commit fdada0db0b2ae2addef4ccafe50937874dbeeebe ]

This reverts commit 75fd6485cccef269ac9eb3b71cf56753341195ef.
This patch was applied twice by accident, causing probe failures.
Revert the accident.

Signed-off-by: Alexander Stein 
Fixes: 75fd6485ccce ("usb: phy: generic: Get the vbus supply")
Cc: stable 
Reviewed-by: Sean Anderson 
Link: https://lore.kernel.org/r/20240314092628.1869414-1-alexander.stein@ew.tq-group.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: phy: mxs: remove CONFIG_USB_OTG condition for mxs_phy_is_otg_host()

2024-01-25T22:37:51+00:00

commit ff2b89de471da942a4d853443688113a44fd35ed upstream.

When CONFIG_USB_OTG is not set, mxs_phy_is_otg_host() will always return
false. This behaviour is wrong. Since phy.last_event will always be set
for either host or device mode. Therefore, CONFIG_USB_OTG condition
can be removed.

Fixes: 5eda42aebb76 ("usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host()")
cc:  
Acked-by: Peter Chen 
Signed-off-by: Xu Yang 
Link: https://lore.kernel.org/r/20231228110753.1755756-3-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman

usb: phy: mxs: fix getting wrong state with mxs_phy_is_otg_host()

2023-09-19T10:20:17+00:00

[ Upstream commit 5eda42aebb7668b4dcff025cd3ccb0d3d7c53da6 ]

The function mxs_phy_is_otg_host() will return true if OTG_ID_VALUE is
0 at USBPHY_CTRL register. However, OTG_ID_VALUE will not reflect the real
state if the ID pin is float, such as Host-only or Type-C cases. The value
of OTG_ID_VALUE is always 1 which means device mode.
This patch will fix the issue by judging the current mode based on
last_event. The controller will update last_event in time.

Fixes: 7b09e67639d6 ("usb: phy: mxs: refine mxs_phy_disconnect_line")
Signed-off-by: Xu Yang 
Acked-by: Peter Chen 
Link: https://lore.kernel.org/r/20230627110353.1879477-2-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: phy: phy-tahvo: fix memory leak in tahvo_usb_probe()

2023-07-27T06:44:04+00:00

[ Upstream commit 342161c11403ea00e9febc16baab1d883d589d04 ]

Smatch reports:
drivers/usb/phy/phy-tahvo.c: tahvo_usb_probe()
warn: missing unwind goto?

After geting irq, if ret < 0, it will return without error handling to
free memory.
Just add error handling to fix this problem.

Fixes: 0d45a1373e66 ("usb: phy: tahvo: add IRQ check")
Signed-off-by: Li Yang 
Reviewed-by: Dongliang Mu 
Link: https://lore.kernel.org/r/20230420140832.9110-1-lidaxian@hust.edu.cn
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

usb: phy: generic: Get the vbus supply

2022-05-09T07:04:59+00:00

commit 03e607cbb2931374db1825f371e9c7f28526d3f4 upstream.

While support for working with a vbus was added, the regulator was never
actually gotten (despite what was documented). Fix this by actually
getting the supply from the device tree.

Fixes: 7acc9973e3c4 ("usb: phy: generic: add vbus support")
Cc: stable 
Signed-off-by: Sean Anderson 
Link: https://lore.kernel.org/r/20220425171412.1188485-3-sean.anderson@seco.com
Signed-off-by: Greg Kroah-Hartman

usb: phy: tahvo: add IRQ check

2021-09-15T07:50:40+00:00

[ Upstream commit 0d45a1373e669880b8beaecc8765f44cb0241e47 ]

The driver neglects to check the result of platform_get_irq()'s call and
blithely passes the negative error codes to request_threaded_irq() (which
takes *unsigned* IRQ #), causing it to fail with -EINVAL, overriding an
original error code.  Stop calling request_threaded_irq() with the invalid
IRQ #s.

Fixes: 9ba96ae5074c ("usb: omap1: Tahvo USB transceiver driver")
Acked-by: Felipe Balbi 
Signed-off-by: Sergey Shtylyov 
Link: https://lore.kernel.org/r/8280d6a4-8e9a-7cfe-1aa9-db586dc9afdf@omp.ru
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin