linux-stable.git/drivers/soc, branch linux-6.15.y

soc: qcom: mdt_loader: Actually use the e_phoff

2025-08-20T16:35:59+00:00

[ Upstream commit 47e339cac89143709e84a3b71ba8bd9b2fdd2368 ]

Rather than relying/assuming that the tools generating the firmware
places the program headers immediately following the ELF header, use
e_phoff as intended to find the program headers.

Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Bjorn Andersson 
Link: https://lore.kernel.org/r/20250610-mdt-loader-validation-and-fixes-v2-3-f7073e9ab899@oss.qualcomm.com
Signed-off-by: Bjorn Andersson 
Signed-off-by: Sasha Levin

soc: qcom: rpmh-rsc: Add RSC version 4 support

2025-08-20T16:35:54+00:00

[ Upstream commit 84684c57c9cd47b86c883a7170dd68222d97ef13 ]

Register offsets for v3 and v4 versions are backward compatible. Assign v3
offsets for v4 and all higher versions to avoid end up using v2 offsets.

Signed-off-by: Maulik Shah 
Reviewed-by: Konrad Dybcio 
Reviewed-by: Neil Armstrong 
Link: https://lore.kernel.org/r/20250623-rsc_v4-v1-1-275b27bc5e3c@oss.qualcomm.com
Signed-off-by: Bjorn Andersson 
Signed-off-by: Sasha Levin

soc: qcom: pmic_glink: fix OF node leak

2025-08-15T10:16:22+00:00

[ Upstream commit 65702c3d293e45d3cac5e4e175296a9c90404326 ]

Make sure to drop the OF node reference taken when registering the
auxiliary devices when the devices are later released.

Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver")
Cc: Bjorn Andersson 
Signed-off-by: Johan Hovold 
Reviewed-by: Konrad Dybcio 
Link: https://lore.kernel.org/r/20250708085717.15922-1-johan@kernel.org
Signed-off-by: Bjorn Andersson 
Signed-off-by: Sasha Levin

soc/tegra: cbb: Clear ERR_FORCE register with ERR_STATUS

2025-08-15T10:16:20+00:00

[ Upstream commit a0647bca8966db04b79af72851ebd04224a4da40 ]

When error is injected with the ERR_FORCE register, then this register
is not auto cleared on clearing the ERR_STATUS register. This causes
repeated interrupts on error injection. To fix, set the ERR_FORCE to
zero along with clearing the ERR_STATUS register after handling error.

Fixes: fc2f151d2314 ("soc/tegra: cbb: Add driver for Tegra234 CBB 2.0")
Signed-off-by: Sumit Gupta 
Signed-off-by: Thierry Reding 
Signed-off-by: Sasha Levin

soc: qcom: QMI encoding/decoding for big endian

2025-08-15T10:16:15+00:00

[ Upstream commit 3ced38da5f7de4c260f9eaa86fc805827953243a ]

The QMI_DATA_LEN type may have different sizes. Taking the element's
address of that type and interpret it as a smaller sized ones works fine
for little endian platforms but not for big endian ones. Instead use
temporary variables of smaller sized types and cast them correctly to
support big endian platforms.

Signed-off-by: Alexander Wilhelm 
Fixes: 9b8a11e82615 ("soc: qcom: Introduce QMI encoder/decoder")
Reviewed-by: Dmitry Baryshkov 
Link: https://lore.kernel.org/r/20250522143530.3623809-2-alexander.wilhelm@westermo.com
Signed-off-by: Bjorn Andersson 
Signed-off-by: Sasha Levin

soc: aspeed: lpc-snoop: Don't disable channels that aren't enabled

2025-07-24T06:58:30+00:00

commit 56448e78a6bb4e1a8528a0e2efe94eff0400c247 upstream.

Mitigate e.g. the following:

    # echo 1e789080.lpc-snoop > /sys/bus/platform/drivers/aspeed-lpc-snoop/unbind
    ...
    [  120.363594] Unable to handle kernel NULL pointer dereference at virtual address 00000004 when write
    [  120.373866] [00000004] *pgd=00000000
    [  120.377910] Internal error: Oops: 805 [#1] SMP ARM
    [  120.383306] CPU: 1 UID: 0 PID: 315 Comm: sh Not tainted 6.15.0-rc1-00009-g926217bc7d7d-dirty #20 NONE
    ...
    [  120.679543] Call trace:
    [  120.679559]  misc_deregister from aspeed_lpc_snoop_remove+0x84/0xac
    [  120.692462]  aspeed_lpc_snoop_remove from platform_remove+0x28/0x38
    [  120.700996]  platform_remove from device_release_driver_internal+0x188/0x200
    ...

Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver")
Cc: stable@vger.kernel.org
Cc: Jean Delvare 
Acked-by: Jean Delvare 
Link: https://patch.msgid.link/20250616-aspeed-lpc-snoop-fixes-v2-2-3cdd59c934d3@codeconstruct.com.au
Signed-off-by: Andrew Jeffery 
Signed-off-by: Greg Kroah-Hartman

soc: aspeed: lpc-snoop: Cleanup resources in stack-order

2025-07-24T06:58:30+00:00

commit 8481d59be606d2338dbfe14b04cdbd1a3402c150 upstream.

Free the kfifo after unregistering the miscdev in
aspeed_lpc_disable_snoop() as the kfifo is initialised before the
miscdev in aspeed_lpc_enable_snoop().

Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev")
Cc: stable@vger.kernel.org
Cc: Jean Delvare 
Acked-by: Jean Delvare 
Link: https://patch.msgid.link/20250616-aspeed-lpc-snoop-fixes-v2-1-3cdd59c934d3@codeconstruct.com.au
Signed-off-by: Andrew Jeffery 
Signed-off-by: Greg Kroah-Hartman

soc: qcom: pmic_glink_altmode: fix spurious DP hotplug events

2025-06-27T10:13:05+00:00

commit 5090ac9191a19c61beeade60d3d839e509fab640 upstream.

The PMIC GLINK driver is currently generating DisplayPort hotplug
notifications whenever something is connected to (or disconnected from)
a port regardless of the type of notification sent by the firmware.

These notifications are forwarded to user space by the DRM subsystem as
connector "change" uevents:

    KERNEL[1556.223776] change   /devices/platform/soc@0/ae00000.display-subsystem/ae01000.display-controller/drm/card0 (drm)
    ACTION=change
    DEVPATH=/devices/platform/soc@0/ae00000.display-subsystem/ae01000.display-controller/drm/card0
    SUBSYSTEM=drm
    HOTPLUG=1
    CONNECTOR=36
    DEVNAME=/dev/dri/card0
    DEVTYPE=drm_minor
    SEQNUM=4176
    MAJOR=226
    MINOR=0

On the Lenovo ThinkPad X13s and T14s, the PMIC GLINK firmware sends two
identical notifications with orientation information when connecting a
charger, each generating a bogus DRM hotplug event. On the X13s, two
such notification are also sent every 90 seconds while a charger remains
connected, which again are forwarded to user space:

    port = 1, svid = ff00, mode = 255, hpd_state = 0
    payload = 01 00 00 00 00 00 00 ff 00 00 00 00 00 00 00 00

Note that the firmware only sends on of these when connecting an
ethernet adapter.

Fix the spurious hotplug events by only forwarding hotplug notifications
for the Type-C DisplayPort service id. This also reduces the number of
uevents from four to two when an actual DisplayPort altmode device is
connected:

    port = 0, svid = ff01, mode = 2, hpd_state = 0
    payload = 00 01 02 00 f2 0c 01 ff 03 00 00 00 00 00 00 00
    port = 0, svid = ff01, mode = 2, hpd_state = 1
    payload = 00 01 02 00 f2 0c 01 ff 43 00 00 00 00 00 00 00

Fixes: 080b4e24852b ("soc: qcom: pmic_glink: Introduce altmode support")
Cc: stable@vger.kernel.org	# 6.3
Cc: Bjorn Andersson 
Reported-by: Clayton Craft 
Signed-off-by: Johan Hovold 
Acked-by: Konrad Dybcio 
Tested-by: Clayton Craft 
Link: https://lore.kernel.org/r/20250324132448.6134-1-johan+linaro@kernel.org
Signed-off-by: Bjorn Andersson 
Signed-off-by: Greg Kroah-Hartman

soc: aspeed: Add NULL check in aspeed_lpc_enable_snoop()

2025-06-19T13:40:15+00:00

[ Upstream commit f1706e0e1a74b095cbc60375b9b1e6205f5f4c98 ]

devm_kasprintf() returns NULL when memory allocation fails. Currently,
aspeed_lpc_enable_snoop() does not check for this case, which results in a
NULL pointer dereference.

Add NULL check after devm_kasprintf() to prevent this issue.

Fixes: 3772e5da4454 ("drivers/misc: Aspeed LPC snoop output using misc chardev")
Signed-off-by: Henry Martin 
Link: https://patch.msgid.link/20250401074647.21300-1-bsdhenrymartin@gmail.com
[arj: Fix Fixes: tag to use subject from 3772e5da4454]
Signed-off-by: Andrew Jeffery 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Sasha Levin

soc: aspeed: lpc: Fix impossible judgment condition

2025-06-19T13:40:14+00:00

[ Upstream commit d9f0a97e859bdcef51f9c187b1eb712eb13fd3ff ]

smatch error：
drivers/soc/aspeed/aspeed-lpc-snoop.c:169
aspeed_lpc_snoop_config_irq() warn: platform_get_irq() does not return zero

platform_get_irq() return non-zero IRQ number or negative error code,
change '!lpc_snoop->irq' to 'lpc_snoop->irq < 0' to fix this.

Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver")
Signed-off-by: Su Hui 
Reviewed-by: Dan Carpenter 
Link: https://lore.kernel.org/r/20231027020703.1231875-1-suhui@nfschina.com
Signed-off-by: Andrew Jeffery 
Signed-off-by: Arnd Bergmann 
Signed-off-by: Sasha Levin