kernel/linux.git/drivers/bus, branch v6.12.80

driver core: platform: use generic driver_override infrastructure

2026-04-02T11:09:25+00:00

[ Upstream commit 2b38efc05bf7a8568ec74bfffea0f5cfa62bc01d ] When a driver is probed through __driver_attach(), the bus' match() callback is called without the device lock held, thus accessing the driver_override field without a lock, which can cause a UAF. Fix this by using the driver-core driver_override infrastructure taking care of proper locking internally. Note that calling match() from __driver_attach() without the device lock held is intentional. [1] Link: https://lore.kernel.org/driver-core/DGRGTIRHA62X.3RY09D9SOK77P@kernel.org/ [1] Reported-by: Gui-Dong Han Closes: https://bugzilla.kernel.org/show_bug.cgi?id=220789 Fixes: 3d713e0e382e ("driver core: platform: add device binding path 'driver_override'") Reviewed-by: Greg Kroah-Hartman Link: https://patch.msgid.link/20260303115720.48783-5-dakr@kernel.org Signed-off-by: Danilo Krummrich Signed-off-by: Sasha Levin

bus: fsl-mc: fix an error handling in fsl_mc_device_add()

2026-03-04T12:21:50+00:00

[ Upstream commit 52f527d0916bcdd7621a0c9e7e599b133294d495 ] In fsl_mc_device_add(), device_initialize() is called first. put_device() should be called to drop the reference if error occurs. And other resources would be released via put_device -> fsl_mc_device_release. So remove redundant kfree() in error handling path. Fixes: bbf9d17d9875 ("staging: fsl-mc: Freescale Management Complex (fsl-mc) bus driver") Cc: stable@vger.kernel.org Reported-by: Dan Carpenter Closes: https://lore.kernel.org/all/b767348e-d89c-416e-acea-1ebbff3bea20@stanley.mountain/ Signed-off-by: Su Hui Suggested-by: Christophe Leroy (CS GROUP) Signed-off-by: Haoxiang Li Reviewed-by: Ioana Ciornei Link: https://lore.kernel.org/r/20260124102054.1613093-1-lihaoxiang@isrc.iscas.ac.cn Signed-off-by: Christophe Leroy (CS GROUP) Signed-off-by: Sasha Levin

bus: omap-ocp2scp: fix OF populate on driver rebind

2026-03-04T12:21:44+00:00

[ Upstream commit 5eb63e9bb65d88abde647ced50fe6ad40c11de1a ] Since commit c6e126de43e7 ("of: Keep track of populated platform devices") child devices will not be created by of_platform_populate() if the devices had previously been deregistered individually so that the OF_POPULATED flag is still set in the corresponding OF nodes. Switch to using of_platform_depopulate() instead of open coding so that the child devices are created if the driver is rebound. Fixes: c6e126de43e7 ("of: Keep track of populated platform devices") Cc: stable@vger.kernel.org # 3.16 Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251219110119.23507-1-johan@kernel.org Signed-off-by: Kevin Hilman Signed-off-by: Sasha Levin

bus: fsl-mc: fix use-after-free in driver_override_show()

2026-02-19T15:29:52+00:00

[ Upstream commit 148891e95014b5dc5878acefa57f1940c281c431 ] The driver_override_show() function reads the driver_override string without holding the device_lock. However, driver_override_store() uses driver_set_override(), which modifies and frees the string while holding the device_lock. This can result in a concurrent use-after-free if the string is freed by the store function while being read by the show function. Fix this by holding the device_lock around the read operation. Fixes: 1f86a00c1159 ("bus/fsl-mc: add support for 'driver_override' in the mc-bus") Cc: stable@vger.kernel.org Signed-off-by: Gui-Dong Han Reviewed-by: Ioana Ciornei Link: https://lore.kernel.org/r/20251202174438.12658-1-hanguidong02@gmail.com Signed-off-by: Christophe Leroy (CS GROUP) Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

bus: fsl-mc: Replace snprintf and sprintf with sysfs_emit in sysfs show functions

2026-02-19T15:29:51+00:00

[ Upstream commit a50522c805a6c575c80f41b04706e084d814e116 ] Use sysfs_emit() instead of snprintf()/sprintf() when writing to sysfs buffers, as recommended by the kernel documentation. Signed-off-by: Chelsy Ratnawat Acked-by: Ioana Ciornei Link: https://lore.kernel.org/r/20250822124339.1739290-1-chelsyratnawat2001@gmail.com Signed-off-by: Christophe Leroy Stable-dep-of: 148891e95014 ("bus: fsl-mc: fix use-after-free in driver_override_show()") Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

bus: mhi: host: pci_generic: Add Telit FE990B40 modem support

2026-02-16T09:18:45+00:00

commit 6eaee77923ddf04beedb832c06f983679586361c upstream. Add SDX72 based modem Telit FE990B40, reusing FN920C04 configuration. 01:00.0 Unassigned class [ff00]: Qualcomm Device 0309 Subsystem: Device 1c5d:2025 Signed-off-by: Daniele Palmas Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20251015102059.1781001-1-dnlplm@gmail.com Signed-off-by: Fabio Porcedda Signed-off-by: Greg Kroah-Hartman

ti-sysc: allow OMAP2 and OMAP4 timers to be reserved on AM33xx

2026-01-08T09:14:09+00:00

[ Upstream commit 3f61783920504b2cf99330b372d82914bb004d8e ] am33xx.dtsi has the same clock setup as am35xx.dtsi, setting ti,no-reset-on-init and ti,no-idle on timer1_target and timer2_target, so AM33 needs the same workaround as AM35 to avoid ti-sysc probe failing on certain target modules. Signed-off-by: Matthias Schiffer Signed-off-by: Alexander Stein Link: https://lore.kernel.org/r/20250825131114.2206804-1-alexander.stein@ew.tq-group.com Signed-off-by: Kevin Hilman Signed-off-by: Sasha Levin

bus: mhi: host: pci_generic: Add Telit FN990B40 modem support

2025-12-12T17:37:22+00:00

commit 00559ba3ae740e7544b48fb509b2b97f56615892 upstream. Add SDX72 based modem Telit FN990B40, reusing FN920C04 configuration. 01:00.0 Unassigned class [ff00]: Qualcomm Device 0309 Subsystem: Device 1c5d:201a Signed-off-by: Daniele Palmas [mani: added sdx72 in the comment to identify the chipset] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250716091836.999364-1-dnlplm@gmail.com Signed-off-by: Fabio Porcedda Signed-off-by: Greg Kroah-Hartman

bus: mhi: host: pci_generic: Add Telit FN920C04 modem support

2025-12-12T17:37:22+00:00

commit 6348f62ef7ecc5855b710a7d4ea682425c38bb80 upstream. Add SDX35 based modem Telit FN920C04. $ lspci -vv 01:00.0 Unassigned class [ff00]: Qualcomm Device 011a Subsystem: Device 1c5d:2020 Signed-off-by: Daniele Palmas Signed-off-by: Manivannan Sadhasivam Reviewed-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250401093458.2953872-1-dnlplm@gmail.com Signed-off-by: Fabio Porcedda Signed-off-by: Greg Kroah-Hartman

bus: mhi: core: Improve mhi_sync_power_up handling for SYS_ERR state

2025-11-13T20:34:27+00:00

[ Upstream commit aa1a0e93ed21a06acb7ca9d4a4a9fce75ea53d0c ] Allow mhi_sync_power_up to handle SYS_ERR during power-up, reboot, or recovery. This is to avoid premature exit when MHI_PM_IN_ERROR_STATE is observed during above mentioned system states. To achieve this, treat SYS_ERR as a valid state and let its handler process the error and queue the next transition to Mission Mode instead of aborting early. Signed-off-by: Vivek Pernamitta [mani: reworded description] Signed-off-by: Manivannan Sadhasivam Link: https://patch.msgid.link/20250912-uevent_vdev_next-20250911-v4-5-fa2f6ccd301b@quicinc.com Signed-off-by: Sasha Levin