kernel_samsung_a53x/include
Marco Pagani 427235ab25 fpga: region: add owner module and take its refcount
[ Upstream commit b7c0e1ecee403a43abc89eb3e75672b01ff2ece9 ]

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: 0fa20cdfcc1f ("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>
2024-11-19 12:27:04 +01:00
..
acpi Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
asm-generic asm-generic: qspinlock: fix queued_spin_value_unlocked() implementation 2024-11-18 12:11:56 +01:00
clocksource Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
crypto crypto: af_alg - Disallow multiple in-flight AIO requests 2024-11-18 12:12:26 +01:00
drm drm/mipi-dsi: use correct return type for the DSC functions 2024-11-19 12:26:58 +01:00
dt-bindings dt-bindings: clock: Update the videocc resets for sm8150 2024-11-18 12:12:41 +01:00
keys Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kunit Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
kvm Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
linux fpga: region: add owner module and take its refcount 2024-11-19 12:27:04 +01:00
math-emu Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
media Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
memory Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
misc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
net net: remove duplicate reuseport_lookup functions 2024-11-19 12:26:55 +01:00
pcmcia Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
ras Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
rdma Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scsc Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
scsi scsi: core: Introduce enum scsi_disposition 2024-11-18 12:13:21 +01:00
sdp Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
soc soc: fsl: qbman: Add CGR update function 2024-11-19 09:22:35 +01:00
sound ASoC: soc-acpi: add helper to identify parent driver. 2024-11-19 12:26:57 +01:00
target Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
test Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
trace ASoC: tracing: Export SND_SOC_DAPM_DIR_OUT to its value 2024-11-19 12:26:58 +01:00
uapi Input: allocate keycode for Display refresh rate toggle 2024-11-19 09:23:14 +01:00
variant1/linux Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
vdso Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
video Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
xen Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00