The "phy_id" comes from the device tree so it's going to be correct.
But static checkers sometimes complain when we have an upper bounds
check with no lower bounds check. Also it's a bit unusual that the
lowest valid number is 1 instead of 0 so adding a check could
potentially help someone.
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/aPJpB-QI8FMpFGOk@stanley.mountain
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The new Glymur SoC bumps up the HW version of QMP phy to v8.50 for PCIE
g5x4. Add the new PCS offsets in a dedicated header file.
Signed-off-by: Prudhvi Yarlagadda <quic_pyarlaga@quicinc.com>
Signed-off-by: Wenbin Yao <wenbin.yao@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
Link: https://patch.msgid.link/20251103-glymur-pcie-upstream-v6-2-18a5e0a538dc@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The fifth PCIe instance on Glymur has a Gen5 4-lane PHY. Document it as a
separate compatible.
Signed-off-by: Prudhvi Yarlagadda <quic_pyarlaga@quicinc.com>
Signed-off-by: Wenbin Yao <wenbin.yao@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Qiang Yu <qiang.yu@oss.qualcomm.com>
Link: https://patch.msgid.link/20251103-glymur-pcie-upstream-v6-1-18a5e0a538dc@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Bindings should be complete, thus complete the constraints for the
resets by adding missing compatibles for devices with two resets and
"else:" clause narrowing them for all other devices.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Acked-by: Rob Herring (Arm) <robh@kernel.org>
Link: https://patch.msgid.link/20251017045919.34599-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Certain platforms may not have the PHY_ENABLE bit set on power on reset.
Update the current sequence to explicitly write to enable the PHY_ENABLE
bit. This ensures that regardless of the platform, the PHY is properly
enabled.
Signed-off-by: Ronak Raheja <ronak.raheja@oss.qualcomm.com>
Signed-off-by: Wesley Cheng <wesley.cheng@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20250920032158.242725-1-wesley.cheng@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The QMP USB3/DP Combo PHY hosts an USB3 phy and a DP PHY on top
of a combo glue to route either lanes to the 4 shared physical lanes.
The routing of the lanes can be:
- 2 DP + 2 USB3
- 4 DP
- 2 USB3
Get the lanes mapping from DT and stop registering the USB-C
muxes in favor of a static mode and orientation detemined
by the lanes mapping.
This allows supporting boards with direct connection of USB3 and
DisplayPort lanes to the QMP Combo PHY lanes, not using the
USB-C Altmode feature.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Tested-by: Xilin Wu <sophon@radxa.com> # qcs6490-radxa-dragon-q6a
Reviewed-by: Abel Vesa <abel.vesa@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-topic-x1e80100-hdmi-v7-2-2bee0e66cc1b@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The QMP USB3/DP Combo PHY hosts an USB3 phy and a DP PHY on top
of a combo glue to route either lanes to the 4 shared physical lanes.
The routing of the lanes can be:
- 2 DP + 2 USB3
- 4 DP
- 2 USB3
The layout of the lanes was designed to be mapped and swapped
related to the USB-C Power Delivery negociation, so it supports
a finite set of mappings inherited by the USB-C Altmode layouts.
Nevertheless those QMP Comby PHY can be used to drive a DisplayPort
connector, DP->HDMI bridge, USB3 A Connector, etc... without
an USB-C connector and no PD events.
Document the data-lanes on numbered port@0 out endpoints,
allowing us to document the lanes mapping to DisplayPort
and/or USB3 connectors/peripherals.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119-topic-x1e80100-hdmi-v7-1-2bee0e66cc1b@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When PCIe link enters L1 PM substates, the PHY will turn off its
PLL for power-saving. However, it turns off the PLL too fast which
leads the PHY to be broken. According to the PHY document, we need
to delay PLL turnoff time.
Fixes: f13bff2516 ("phy: rockchip-naneng-combo: Support rk3562")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/1763459526-35004-2-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When PCIe link enters L1 PM substates, the PHY will turn off its
PLL for power-saving. However, it turns off the PLL too fast which
leads the PHY to be broken. According to the PHY document, we need
to delay PLL turnoff time.
Fixes: bbcca4fac8 ("phy: rockchip: naneng-combphy: Add RK3528 support")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/1763459526-35004-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The Renesas RZ/G3S supports a power saving mode where power to most of the
SoC components is turned off. The USB PHY is among these components.
Because of this the settings applied in driver probe need to be executed
also on resume path. On suspend path only reset signal need to be asserted.
Add suspend/resume support.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119120418.686224-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Move the check of phy_data->init_bus from rcar_gen3_phy_usb2_init_bus()
to rcar_gen3_phy_usb2_probe() to avoid having it duplicated in both the
probe path and the upcoming resume code. This is a preparatory patch.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251119120418.686224-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
If an error occurs after the reset_control_deassert(),
reset_control_assert() must be called, as already done in the remove
function.
Use devm_add_action_or_reset() to add the missing call and simplify the
.remove() function accordingly.
While at it, drop struct rcar_gen3_chan::rstc as it is not used aymore.
[claudiu.beznea: removed "struct reset_control *rstc = data;" from
rcar_gen3_reset_assert(), dropped struct rcar_gen3_chan::rstc]
Fixes: 4eae163753 ("phy: renesas: rcar-gen3-usb2: Add support to initialize the bus")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251023135810.1688415-3-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The reset lines are mandatory for the Renesas RZ/G3S platform and must be
explicitly defined in device tree.
Fixes: f3c8498551 ("dt-bindings: phy: renesas,usb2-phy: Document RZ/G3S phy bindings")
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Link: https://patch.msgid.link/20251023135810.1688415-2-claudiu.beznea.uj@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Commit f4fb9c4d7f ("phy: exynos5-usbdrd: allow DWC3 runtime suspend
with UDC bound (E850+)") incorrectly added clk_bulk_disable() as the
inverse of clk_bulk_prepare_enable() while it should have of course
used clk_bulk_disable_unprepare(). This means incorrect reference
counts to the CMU driver remain.
Update the code accordingly.
Fixes: f4fb9c4d7f ("phy: exynos5-usbdrd: allow DWC3 runtime suspend with UDC bound (E850+)")
CC: stable@vger.kernel.org
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Reviewed-by: Sam Protsenko <semen.protsenko@linaro.org>
Reviewed-by: Peter Griffin <peter.griffin@linaro.org>
Link: https://patch.msgid.link/20251006-gs101-usb-phy-clk-imbalance-v1-1-205b206126cf@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Platform drivers can be probed after their init sections have been
discarded (e.g. on probe deferral or manual rebind through sysfs) so the
probe function and match table must not live in init.
Fixes: 783f6d3dcf ("phy: bcm63xx-usbh: Add BCM63xx USBH driver")
Cc: stable@vger.kernel.org # 5.9
Cc: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251017054537.6884-1-johan@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
For MIPI mode, the inno-dsidphy found on RK3506 supports up to 2 lanes
and a maximum data rate of 1.5GHz.
Signed-off-by: Hongming Zou <hongming.zou@rock-chips.com>
Signed-off-by: Chaoyi Chen <chaoyi.chen@rock-chips.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251106020632.92-7-kernel@airkyi.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add a compatible string for Filogic 820, this chip integrates a MediaTek
generic T-PHY version 2
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Sjoerd Simons <sjoerd@collabora.com>
Link: https://patch.msgid.link/20251115-openwrt-one-network-v4-3-48cbda2969ac@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Replace the custom qmp_regulator_data structure with the standard
regulator_bulk_data and use the init_load_uA field to set regulator
load during initialization.
This change simplifies the regulator setup by removing manual
allocation and load configuration logic, and leverages
devm_regulator_bulk_get_const() to automatically apply load settings
before enabling regulators.
Signed-off-by: Faisal Hassan <faisal.hassan@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Bjorn Andersson <andersson@kernel.org>
Link: https://patch.msgid.link/20250922135901.2067-1-faisal.hassan@oss.qualcomm.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Biju <biju.das.au@gmail.com> says:
This patch series aims to add Renesas RZ/G3E USB3.0 PHY driver support.
This module is connected between USB3 Host and PHY module. The main
functions of this module are:
1) Reset control
2) Control of PHY input pins
3) Monitoring of PHY output pins
Biju Das (2):
dt-bindings: phy: renesas: Document Renesas RZ/G3E USB3.0 PHY
phy: renesas: Add Renesas RZ/G3E USB3.0 PHY driver
Link: https://patch.msgid.link/20251029084037.108610-1-biju.das.jz@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add Renesas RZ/G3E USB3.0 PHY driver. This module is connected
between USB3 Host and PHY module. The main functions of this
module are:
1) Reset control
2) Control of PHY input pins
3) Monitoring of PHY output pins
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://patch.msgid.link/20251029084037.108610-3-biju.das.jz@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document Renesas RZ/G3E USB3.0 PHY. This IP is connected between
USB3HOST and PHY module. The main functions of the module are
as follows:
- Reset control
- Control of PHY input pins
- Monitoring of PHY output pins
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251029084037.108610-2-biju.das.jz@bp.renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Remove extra space after '=' to comply with coding style.
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Peter Griffin <peter.griffin@linaro.org> says:
This series adds a new phy_notify_state() API to the phy subsystem. It is
designed to be used when some specific runtime configuration parameters
need to be changed when transitioning to the desired state which can't be
handled by phy_calibrate()or phy_power_{on|off}().
The first user of the new API is phy-samsung-ufs and phy-gs101-ufs which
need to issue some register writes when entering and exiting the hibern8
link state.
A separate patch will be sent for ufs-exynos driver to make use of this new
API in the hibern8 callbacks.
Link: https://patch.msgid.link/20251112-phy-notify-pmstate-v5-0-39df622d8fcb@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Implement the .notify_phystate() callback and provide the gs101 specific
phy values that need to be programmed when entering and exiting the hibern8
state.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251112-phy-notify-pmstate-v5-2-39df622d8fcb@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add a new phy_notify_state() api that notifies and configures a phy for a
given state transition.
This is intended to be used by phy drivers which need to do some runtime
configuration of parameters that can't be handled by phy_calibrate() or
phy_power_{on|off}().
The first usage of this API is in the Samsung UFS phy that needs to issue
some register writes when entering and exiting the hibernate link state.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20251112-phy-notify-pmstate-v5-1-39df622d8fcb@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
of_gpio.h is deprecated and subject to remove.
The driver doesn't use it, simply remove the unused header.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Peng Fan <peng.fan@nxp.com> says:
TJA1048 is a Dual channel can transceiver with Sleep mode supported.
TJA105{1,7} is a Single Channel can transceiver with Sleep mode supported.
Link: https://patch.msgid.link/20251001-can-v7-0-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Support TJA105{1,7} which are a single channel high-speed CAN transceiver
with silent mode supported.
phy mode is not implemented as of now. silent settings are kept in
phy_power_on and phy_power_off. After phy mode is supported, the silent
settings could be moved to phy_set_mode.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-5-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
gpiod_set_value_cansleep has an internal check on gpio_desc using
'VALIDATE_DESC(desc)', the check before invoking gpiod_set_value_cansleep
could be removed.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-4-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
- Introduce new flag CAN_TRANSCEIVER_DUAL_CH to indicate the phy has two
channels.
- Alloc a phy for each channel
- Support TJA1048 which is a dual high-speed CAN transceiver with sleep
mode supported.
- Add can_transceiver_phy_xlate for parsing phy
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-3-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
To prepare for dual-channel phy support, introduce can_transceiver_priv as
a higher level encapsulation for phy.
No functional changes.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-2-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The TJA1048 is a dual high-speed CAN transceiver with sleep mode supported
and no EN pin.
The TJA1051 is a high-speed CAN transceiver with slient mode supported,
but only TJA1051T/E has EN pin. To make it simple, make enable-gpios as
optional for TJA1051.
The TJA1057 is a high-speed CAN transceiver with slient mode supported
and no EN pin.
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Acked-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://patch.msgid.link/20251001-can-v7-1-fad29efc3884@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
One revert because of a regression in the I2C core which has sadly not
showed up during its time in -next.
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Merge tag 'i2c-for-6.18-rc1-hotfix' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fix from Wolfram Sang:
"One revert because of a regression in the I2C core which has sadly not
showed up during its time in -next"
* tag 'i2c-for-6.18-rc1-hotfix' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
Revert "i2c: boardinfo: Annotate code used in init phase only"
reserved and accessing reserved register space could result in undefined
behavior
- Fix a function's retval check in aspeed-scu-ic
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Merge tag 'irq_urgent_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Skip interrupt ID 0 in sifive-plic during suspend/resume because
ID 0 is reserved and accessing reserved register space could result
in undefined behavior
- Fix a function's retval check in aspeed-scu-ic
* tag 'irq_urgent_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/sifive-plic: Avoid interrupt ID 0 handling during suspend/resume
irqchip/aspeed-scu-ic: Fix an IS_ERR() vs NULL check
The previous fix to trace_marker required updating trace_marker_raw
as well. The difference between trace_marker_raw from trace_marker
is that the raw version is for applications to write binary structures
directly into the ring buffer instead of writing ASCII strings.
This is for applications that will read the raw data from the ring
buffer and get the data structures directly. It's a bit quicker than
using the ASCII version.
Unfortunately, it appears that our test suite has several tests that
test writes to the trace_marker file, but lacks any tests to the
trace_marker_raw file (this needs to be remedied). Two issues came
about the update to the trace_marker_raw file that syzbot found:
- Fix tracing_mark_raw_write() to use per CPU buffer
The fix to use the per CPU buffer to copy from user space was needed for
both the trace_maker and trace_maker_raw file.
The fix for reading from user space into per CPU buffers properly fixed
the trace_marker write function, but the trace_marker_raw file wasn't
fixed properly. The user space data was correctly written into the per CPU
buffer, but the code that wrote into the ring buffer still used the user
space pointer and not the per CPU buffer that had the user space data
already written.
- Stop the fortify string warning from writing into trace_marker_raw
After converting the copy_from_user_nofault() into a memcpy(), another
issue appeared. As writes to the trace_marker_raw expects binary data, the
first entry is a 4 byte identifier. The entry structure is defined as:
struct {
struct trace_entry ent;
int id;
char buf[];
};
The size of this structure is reserved on the ring buffer with:
size = sizeof(*entry) + cnt;
Then it is copied from the buffer into the ring buffer with:
memcpy(&entry->id, buf, cnt);
This use to be a copy_from_user_nofault(), but now converting it to
a memcpy() triggers the fortify-string code, and causes a warning.
The allocated space is actually more than what is copied, as the cnt
used also includes the entry->id portion. Allocating sizeof(*entry)
plus cnt is actually allocating 4 bytes more than what is needed.
Change the size function to:
size = struct_size(entry, buf, cnt - sizeof(entry->id));
And update the memcpy() to unsafe_memcpy().
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Merge tag 'trace-v6.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
"The previous fix to trace_marker required updating trace_marker_raw as
well. The difference between trace_marker_raw from trace_marker is
that the raw version is for applications to write binary structures
directly into the ring buffer instead of writing ASCII strings. This
is for applications that will read the raw data from the ring buffer
and get the data structures directly. It's a bit quicker than using
the ASCII version.
Unfortunately, it appears that our test suite has several tests that
test writes to the trace_marker file, but lacks any tests to the
trace_marker_raw file (this needs to be remedied). Two issues came
about the update to the trace_marker_raw file that syzbot found:
- Fix tracing_mark_raw_write() to use per CPU buffer
The fix to use the per CPU buffer to copy from user space was
needed for both the trace_maker and trace_maker_raw file.
The fix for reading from user space into per CPU buffers properly
fixed the trace_marker write function, but the trace_marker_raw
file wasn't fixed properly. The user space data was correctly
written into the per CPU buffer, but the code that wrote into the
ring buffer still used the user space pointer and not the per CPU
buffer that had the user space data already written.
- Stop the fortify string warning from writing into trace_marker_raw
After converting the copy_from_user_nofault() into a memcpy(),
another issue appeared. As writes to the trace_marker_raw expects
binary data, the first entry is a 4 byte identifier. The entry
structure is defined as:
struct {
struct trace_entry ent;
int id;
char buf[];
};
The size of this structure is reserved on the ring buffer with:
size = sizeof(*entry) + cnt;
Then it is copied from the buffer into the ring buffer with:
memcpy(&entry->id, buf, cnt);
This use to be a copy_from_user_nofault(), but now converting it to
a memcpy() triggers the fortify-string code, and causes a warning.
The allocated space is actually more than what is copied, as the
cnt used also includes the entry->id portion. Allocating
sizeof(*entry) plus cnt is actually allocating 4 bytes more than
what is needed.
Change the size function to:
size = struct_size(entry, buf, cnt - sizeof(entry->id));
And update the memcpy() to unsafe_memcpy()"
* tag 'trace-v6.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: Stop fortify-string from warning in tracing_mark_raw_write()
tracing: Fix tracing_mark_raw_write() to use buf and not ubuf
- Fix UAPI types check in headers_check.pl
- Only enable -Werror for hostprogs with CONFIG_WERROR / W=e
- Ignore fsync() error when output of gen_init_cpio is a pipe
- Several little build fixes for recent modules.builtin.modinfo series
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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Merge tag 'kbuild-fixes-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux
Pull Kbuild fixes from Nathan Chancellor:
- Fix UAPI types check in headers_check.pl
- Only enable -Werror for hostprogs with CONFIG_WERROR / W=e
- Ignore fsync() error when output of gen_init_cpio is a pipe
- Several little build fixes for recent modules.builtin.modinfo series
* tag 'kbuild-fixes-6.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kbuild/linux:
kbuild: Use '--strip-unneeded-symbol' for removing module device table symbols
s390/vmlinux.lds.S: Move .vmlinux.info to end of allocatable sections
kbuild: Add '.rel.*' strip pattern for vmlinux
kbuild: Restore pattern to avoid stripping .rela.dyn from vmlinux
gen_init_cpio: Ignore fsync() returning EINVAL on pipes
scripts/Makefile.extrawarn: Respect CONFIG_WERROR / W=e for hostprogs
kbuild: uapi: Strip comments before size type check
Fixes only in drivers (ufs, mvsas, qla2xxx, target) that came in just
before or during the merge window. The most important one is the
qla2xxx which reverts a conversion to fix flexible array member
warnings, that went up in this merge window but which turned out on
further testing to be causing data corruption.
Signed-off-by: James E.J. Bottomley <James.Bottomley@HansenPartnership.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Fixes only in drivers (ufs, mvsas, qla2xxx, target) that came in just
before or during the merge window.
The most important one is the qla2xxx which reverts a conversion to
fix flexible array member warnings, that went up in this merge window
but which turned out on further testing to be causing data corruption"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ufs: core: Include UTP error in INT_FATAL_ERRORS
scsi: ufs: sysfs: Make HID attributes visible
scsi: mvsas: Fix use-after-free bugs in mvs_work_queue
scsi: ufs: core: Fix PM QoS mutex initialization
scsi: ufs: core: Fix runtime suspend error deadlock
Revert "scsi: qla2xxx: Fix memcpy() field-spanning write issue"
scsi: target: target_core_configfs: Add length check to avoid buffer overflow
emulator in favor of int3_emulate_jcc() which is written in C
- Replace KVM fastops with C-based stubs which avoids problems with the
fastop infra related to latter not adhering to the C ABI due to their
special calling convention and, more importantly, bypassing compiler
control-flow integrity checking because they're written in asm
- Remove wrongly used static branches and other ugliness accumulated
over time in hyperv's hypercall implementation with a proper static
function call to the correct hypervisor call variant
- Add some fixes and modifications to allow running FRED-enabled kernels
in KVM even on non-FRED hardware
- Add kCFI improvements like validating indirect calls and prepare for
enabling kCFI with GCC. Add cmdline params documentation and other
code cleanups
- Use the single-byte 0xd6 insn as the official #UD single-byte
undefined opcode instruction as agreed upon by both x86 vendors
- Other smaller cleanups and touchups all over the place
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Merge tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull more x86 updates from Borislav Petkov:
- Remove a bunch of asm implementing condition flags testing in KVM's
emulator in favor of int3_emulate_jcc() which is written in C
- Replace KVM fastops with C-based stubs which avoids problems with the
fastop infra related to latter not adhering to the C ABI due to their
special calling convention and, more importantly, bypassing compiler
control-flow integrity checking because they're written in asm
- Remove wrongly used static branches and other ugliness accumulated
over time in hyperv's hypercall implementation with a proper static
function call to the correct hypervisor call variant
- Add some fixes and modifications to allow running FRED-enabled
kernels in KVM even on non-FRED hardware
- Add kCFI improvements like validating indirect calls and prepare for
enabling kCFI with GCC. Add cmdline params documentation and other
code cleanups
- Use the single-byte 0xd6 insn as the official #UD single-byte
undefined opcode instruction as agreed upon by both x86 vendors
- Other smaller cleanups and touchups all over the place
* tag 'x86_core_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (24 commits)
x86,retpoline: Optimize patch_retpoline()
x86,ibt: Use UDB instead of 0xEA
x86/cfi: Remove __noinitretpoline and __noretpoline
x86/cfi: Add "debug" option to "cfi=" bootparam
x86/cfi: Standardize on common "CFI:" prefix for CFI reports
x86/cfi: Document the "cfi=" bootparam options
x86/traps: Clarify KCFI instruction layout
compiler_types.h: Move __nocfi out of compiler-specific header
objtool: Validate kCFI calls
x86/fred: KVM: VMX: Always use FRED for IRQs when CONFIG_X86_FRED=y
x86/fred: Play nice with invoking asm_fred_entry_from_kvm() on non-FRED hardware
x86/fred: Install system vector handlers even if FRED isn't fully enabled
x86/hyperv: Use direct call to hypercall-page
x86/hyperv: Clean up hv_do_hypercall()
KVM: x86: Remove fastops
KVM: x86: Convert em_salc() to C
KVM: x86: Introduce EM_ASM_3WCL
KVM: x86: Introduce EM_ASM_1SRC2
KVM: x86: Introduce EM_ASM_2CL
KVM: x86: Introduce EM_ASM_2W
...
version supports the =@ccCOND syntax
- Remove a bunch of AS_* Kconfig symbols which detect assembler support for
various instruction mnemonics now that the minimum assembler version
supports them all
- The usual cleanups all over the place
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Merge tag 'x86_cleanups_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Borislav Petkov:
- Simplify inline asm flag output operands now that the minimum
compiler version supports the =@ccCOND syntax
- Remove a bunch of AS_* Kconfig symbols which detect assembler support
for various instruction mnemonics now that the minimum assembler
version supports them all
- The usual cleanups all over the place
* tag 'x86_cleanups_for_v6.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/asm: Remove code depending on __GCC_ASM_FLAG_OUTPUTS__
x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>
x86/mtrr: Remove license boilerplate text with bad FSF address
x86/asm: Use RDPKRU and WRPKRU mnemonics in <asm/special_insns.h>
x86/idle: Use MONITORX and MWAITX mnemonics in <asm/mwait.h>
x86/entry/fred: Push __KERNEL_CS directly
x86/kconfig: Remove CONFIG_AS_AVX512
crypto: x86 - Remove CONFIG_AS_VPCLMULQDQ
crypto: X86 - Remove CONFIG_AS_VAES
crypto: x86 - Remove CONFIG_AS_GFNI
x86/kconfig: Drop unused and needless config X86_64_SMP
preserve vmalloc allocations across handover.
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Merge tag 'mm-nonmm-stable-2025-10-10-15-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more updates from Andrew Morton:
"Just one series here - Mike Rappoport has taught KEXEC handover to
preserve vmalloc allocations across handover"
* tag 'mm-nonmm-stable-2025-10-10-15-03' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
lib/test_kho: use kho_preserve_vmalloc instead of storing addresses in fdt
kho: add support for preserving vmalloc allocations
kho: replace kho_preserve_phys() with kho_preserve_pages()
kho: check if kho is finalized in __kho_preserve_order()
MAINTAINERS, .mailmap: update Umang's email address
All singletons, please see the changelogs for details.
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Merge tag 'mm-hotfixes-stable-2025-10-10-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"7 hotfixes. All 7 are cc:stable and all 7 are for MM.
All singletons, please see the changelogs for details"
* tag 'mm-hotfixes-stable-2025-10-10-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mm: hugetlb: avoid soft lockup when mprotect to large memory area
fsnotify: pass correct offset to fsnotify_mmap_perm()
mm/ksm: fix flag-dropping behavior in ksm_madvise
mm/damon/vaddr: do not repeat pte_offset_map_lock() until success
mm/rmap: fix soft-dirty and uffd-wp bit loss when remapping zero-filled mTHP subpage to shared zeropage
mm/thp: fix MTE tag mismatch when replacing zero-filled subpages
memcg: skip cgroup_file_notify if spinning is not allowed
