Marco Pagani 75a001914a fpga: region: add owner module and take its refcount ... [ Upstream commit b7c0e1ecee ] The current implementation of the fpga region assumes that the low-level module registers a driver for the parent device and uses its owner pointer to take the module's refcount. This approach is problematic since it can lead to a null pointer dereference while attempting to get the region during programming if the parent device does not have a driver. To address this problem, add a module owner pointer to the fpga_region struct and use it to take the module's refcount. Modify the functions for registering a region to take an additional owner module parameter and rename them to avoid conflicts. Use the old function names for helper macros that automatically set the module that registers the region as the owner. This ensures compatibility with existing low-level control modules and reduces the chances of registering a region without setting the owner. Also, update the documentation to keep it consistent with the new interface for registering an fpga region. Fixes: 0fa20cdfcc ("fpga: fpga-region: device tree control for FPGA") Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Xu Yilun <yilun.xu@intel.com> Reviewed-by: Russ Weight <russ.weight@linux.dev> Signed-off-by: Marco Pagani <marpagan@redhat.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20240419083601.77403-1-marpagan@redhat.com Signed-off-by: Xu Yilun <yilun.xu@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-12 11:03:39 +02:00
..
80211	docs: net: 80211: reduce docs build time	2020-10-08 10:41:49 +02:00
acpi	Documentation: ACPI: fix error script name	2021-06-17 13:21:48 -06:00
backlight
cxl	Documentation: cxl: remove dangling kernel-doc reference	2022-08-05 08:41:02 -07:00
dmaengine	dmaengine: remove DMA_MEMCPY_SG once again	2022-06-27 12:01:40 +05:30
driver-model	Documentation: devres: add missing I2C helper	2022-11-02 21:16:38 +01:00
early-userspace	Documentation: Fix intiramfs script name	2021-07-18 23:48:14 +09:00
firmware	Driver core / kernfs changes for 6.0-rc1	2022-08-04 11:31:20 -07:00
fpga	fpga: region: add owner module and take its refcount	2024-06-12 11:03:39 +02:00
gpio	This was a moderately busy cycle for documentation, but nothing all that	2022-08-02 19:24:24 -07:00
hte	tegra194-hte.rst: fix reference to its binding	2022-07-07 13:10:00 -06:00
i3c	docs: driver-api: i3c: Replace HTTP links with HTTPS ones	2020-07-13 09:32:36 -06:00
iio	docs: iio: mark "repeat" sysfs attribute as optional	2021-03-11 20:47:08 +00:00
md
media	media: mc: entity: Rewrite media_pipeline_start()	2022-09-24 09:19:42 +02:00
mei	docs updates for v5.10-rc1	2020-10-16 15:02:21 -07:00
memory-devices	Replace HTTP links with HTTPS ones: Documentation/driver-api	2020-06-26 11:09:04 -06:00
mmc	docs: mmc: update maintainer name and URL	2021-10-28 11:54:54 +02:00
mtd	Documentation / MTD: Rename the intel-spi driver	2022-02-14 12:53:10 +00:00
nfc	nfc: constify nfc_llc_ops	2021-07-25 09:21:21 +01:00
nvdimm	nvdimm/blk: Fix title level	2022-03-23 17:52:33 -07:00
pci	PCI/P2PDMA: Remove reference to pci_p2pdma_map_sg()	2024-01-25 15:27:44 -08:00
phy
pldmfw	Add pldmfw library for PLDM firmware update	2020-07-28 17:07:06 -07:00
pm	docs: devices.rst: better reference documentation docs	2021-06-17 13:24:36 -06:00
rapidio	Replace HTTP links with HTTPS ones: Documentation/driver-api	2020-06-26 11:09:04 -06:00
serial	tty: serial: document uart_get_console()	2022-07-28 10:37:42 +02:00
soundwire	docs: soundwire: fix some identation at stream.rst	2020-09-10 10:49:29 -06:00
surface_aggregator	platform/surface: aggregator: Allow notifiers to avoid communication on unregistering	2022-06-13 17:25:07 +02:00
thermal	docs: driver-api/thermal/intel_dptf: Use copyright symbol	2022-04-05 09:46:06 -06:00
tty	Documentation: tty: n_gsm, use power of ReST	2022-04-14 18:24:24 +02:00
usb	Docs: usb: update writesize, copy_from_user, usb_fill_bulk_urb, usb_submit_urb	2021-11-17 14:54:58 +01:00
xilinx	firmware: xilinx: Remove zynqmp_pm_get_eemi_ops() in IS_REACHABLE(CONFIG_ZYNQMP_FIRMWARE)	2021-03-01 12:52:07 +01:00
aperture.rst	drm: Implement DRM aperture helpers under video/	2022-06-27 11:07:55 +02:00
auxiliary_bus.rst	Documentation/auxiliary_bus: Move the text into the code	2021-12-03 16:41:50 +01:00
basics.rst	overflow: Fix kern-doc markup for functions	2022-10-25 14:57:42 -07:00
clk.rst
component.rst
connector.rst	net/connector: Add const qualifier to cb_id	2020-12-16 11:06:49 -08:00
console.rst
dcdbas.rst
devfreq.rst
device_link.rst	docs: device_link.rst: remove duplicated kernel-doc include	2020-10-15 07:49:42 +02:00
device-io.rst	dma-buf-map: Rename to iosys-map	2022-02-07 16:35:35 -08:00
dma-buf.rst	dma-buf: add dma_fence_unwrap v2	2022-03-25 14:18:28 +01:00
edac.rst
eisa.rst
firewire.rst	Documentation: fix firewire.rst ABI file path error	2022-01-20 17:01:32 -07:00
frame-buffer.rst
generic-counter.rst	counter: Update documentation for new counter registration functions	2021-12-30 17:44:06 +01:00
hsi.rst
i2c.rst
index.rst	drm: Implement DRM aperture helpers under video/	2022-06-27 11:07:55 +02:00
infiniband.rst
infrastructure.rst	docs: infrastructure.rst: exclude device_link_state from device.h	2020-10-15 07:49:46 +02:00
input.rst	Input: remove input_polled_dev implementation	2020-12-02 12:35:14 -08:00
interconnect.rst
io_ordering.rst
io-mapping.rst	io-mapping: Provide iomap_local variant	2020-11-24 14:42:09 +01:00
ioctl.rst	docs: driver-api: avoid using ReST :doc:foo markup	2021-06-17 13:24:37 -06:00
ipmb.rst
ipmi.rst	ipmi: Add docs for the IPMI IPMB driver	2021-10-05 06:54:17 -05:00
isa.rst	Remove duplicate words inside documentation	2022-09-27 13:21:43 -06:00
isapnp.rst
libata.rst	libata: Improve ATA queued command allocation	2022-04-11 09:27:44 +09:00
mailbox.rst	docs: move mailbox.txt to driver-api and rename it	2020-06-26 11:33:38 -06:00
men-chameleon-bus.rst	Documentation: document dma device use for mcb	2021-01-11 13:26:13 -07:00
message-based.rst
misc_devices.rst
miscellaneous.rst	docs/driver-api/miscellaneous: Remove kernel-doc of serial_core.c	2022-11-09 14:56:05 +01:00
mtdnand.rst	docs: mtd: Avoid htmldocs warnings	2020-12-10 22:37:32 +01:00
ntb.rst	Documentation/driver-api: ntb: drop doubled word	2020-07-13 11:18:17 -06:00
nvmem.rst	doc: nvmem: Update example	2022-02-21 18:00:30 +01:00
parport-lowlevel.rst
pin-control.rst	docs/pinctrl: fix the reference to the u300 platform	2021-05-28 02:59:40 +02:00
pps.rst
ptp.rst	docs: ptp.rst: add support for Renesas (IDT) ClockMatrix	2020-07-17 10:25:21 -07:00
pwm.rst	pwm: core: Get rid of unused devm_of_pwm_get()	2022-09-19 06:17:05 -07:00
regulator.rst	docs: get rid of :c:type explicit declarations for structs	2020-10-15 07:49:40 +02:00
reset.rst	docs: add a reset controller chapter to the driver API docs	2020-12-08 10:48:04 -07:00
rfkill.rst
s390-drivers.rst
scsi.rst
slimbus.rst
sm501.rst
spi.rst	spi: Update reference to struct spi_controller	2022-12-31 13:32:06 +01:00
switchtec.rst
sync_file.rst
target.rst	docs: scsi: target.rst: remove iSCSI transport class kernel-doc markup	2020-10-15 07:49:42 +02:00
uio-howto.rst	Documentation/driver-api: uio-howto: drop doubled word	2020-07-10 14:58:01 +02:00
vfio-mediated-device.rst	vfio/mdev: consolidate all the description sysfs into the core code	2022-10-04 12:06:58 -06:00
vfio-pci-device-specific-driver-acceptance.rst	vfio-pci: Provide reviewers and acceptance criteria for variant drivers	2022-03-17 09:57:11 -06:00
vfio.rst	vfio: Introduce a vfio_uninit_group_dev() API call	2021-08-11 09:50:10 -06:00
vme.rst	vme: move back to staging	2022-06-10 15:38:14 +02:00
w1.rst
xillybus.rst	Documentation/driver-api: xillybus: drop doubled word	2020-07-10 14:58:01 +02:00
zorro.rst