kernel/linux.git/drivers/net/pse-pd/pd692x0.c, branch linux-7.0.y

Convert remaining multi-line kmalloc_obj/flex GFP_KERNEL uses

2026-02-22T16:26:33+00:00

Conversion performed via this Coccinelle script: // SPDX-License-Identifier: GPL-2.0-only // Options: --include-headers-for-types --all-includes --include-headers --keep-comments virtual patch @gfp depends on patch && !(file in "tools") && !(file in "samples")@ identifier ALLOC = {kmalloc_obj,kmalloc_objs,kmalloc_flex, kzalloc_obj,kzalloc_objs,kzalloc_flex, kvmalloc_obj,kvmalloc_objs,kvmalloc_flex, kvzalloc_obj,kvzalloc_objs,kvzalloc_flex}; @@ ALLOC(... - , GFP_KERNEL ) $ make coccicheck MODE=patch COCCI=gfp.cocci Build and boot tested x86_64 with Fedora 42's GCC and Clang: Linux version 6.19.0+ (user@host) (gcc (GCC) 15.2.1 20260123 (Red Hat 15.2.1-7), GNU ld version 2.44-12.fc42) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Linux version 6.19.0+ (user@host) (clang version 20.1.8 (Fedora 20.1.8-4.fc42), LLD 20.1.8) #1 SMP PREEMPT_DYNAMIC 1970-01-01 Signed-off-by: Kees Cook Signed-off-by: Linus Torvalds

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

net: pse-pd: pd692x0: Preserve PSE configuration across reboots

2025-10-16T00:50:29+00:00

Detect when PSE hardware is already configured (user byte == 42) and skip hardware initialization to prevent power interruption to connected devices during system reboots. Previously, the driver would always reconfigure the PSE hardware on probe, causing a port matrix reflash that resulted in temporary power loss to all connected devices. This change maintains power continuity by preserving existing configuration when the PSE has been previously initialized. Signed-off-by: Kory Maincent Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251013-feature_pd692x0_reboot_keep_conf-v2-3-68ab082a93dd@bootlin.com Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: Separate configuration parsing from hardware setup

2025-10-16T00:50:28+00:00

Cache the port matrix configuration in driver private data to enable PSE controller reconfiguration. This refactoring separates device tree parsing from hardware configuration application, allowing settings to be reapplied without reparsing the device tree. This refactoring is a prerequisite for preserving PSE configuration across reboots to prevent power disruption to connected devices. Signed-off-by: Kory Maincent Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251013-feature_pd692x0_reboot_keep_conf-v2-2-68ab082a93dd@bootlin.com Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: Replace __free macro with explicit kfree calls

2025-10-16T00:50:28+00:00

Replace __free(kfree) with explicit kfree() calls to follow the net subsystem policy of avoiding automatic cleanup macros as described in the documentation. Signed-off-by: Kory Maincent Reviewed-by: Simon Horman Link: https://patch.msgid.link/20251013-feature_pd692x0_reboot_keep_conf-v2-1-68ab082a93dd@bootlin.com Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: Skip power budget configuration when undefined

2025-08-21T14:56:08+00:00

If the power supply's power budget is not defined in the device tree, the current code still requests power and configures the PSE manager with a 0W power limit, which is undesirable behavior. Skip power budget configuration entirely when the budget is zero, avoiding unnecessary power requests and preventing invalid 0W limits from being set on the PSE manager. Fixes: 359754013e6a ("net: pse-pd: pd692x0: Add support for PSE PI priority feature") Signed-off-by: Kory Maincent Acked-by: Oleksij Rempel Link: https://patch.msgid.link/20250820133321.841054-1-kory.maincent@bootlin.com Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: Fix power budget leak in manager setup error path

2025-08-21T14:55:40+00:00

Fix a resource leak where manager power budgets were freed on both success and error paths during manager setup. Power budgets should only be freed on error paths after regulator registration or during driver removal. Refactor cleanup logic by extracting OF node cleanup and power budget freeing into separate helper functions for better maintainability. Fixes: 359754013e6a ("net: pse-pd: pd692x0: Add support for PSE PI priority feature") Signed-off-by: Kory Maincent Link: https://patch.msgid.link/20250820132708.837255-1-kory.maincent@bootlin.com Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: reduce stack usage in pd692x0_setup_pi_matrix

2025-07-11T01:05:36+00:00

The pd692x0_manager array in this function is really too big to fit on the stack, though this never triggered a warning until a recent patch made it slightly bigger: drivers/net/pse-pd/pd692x0.c: In function 'pd692x0_setup_pi_matrix': drivers/net/pse-pd/pd692x0.c:1210:1: error: the frame size of 1584 bytes is larger than 1536 bytes [-Werror=frame-larger-than=] Change the function to dynamically allocate the array here. Fixes: 359754013e6a ("net: pse-pd: pd692x0: Add support for PSE PI priority feature") Signed-off-by: Arnd Bergmann Reviewed-by: Kory Maincent Link: https://patch.msgid.link/20250709153210.1920125-1-arnd@kernel.org Signed-off-by: Jakub Kicinski

net: pse-pd: pd692x0: Add support for controller and manager power supplies

2025-06-19T02:00:18+00:00

Add support for managing the VDD and VDDA power supplies for the PD692x0 PSE controller, as well as the VAUX5 and VAUX3P3 power supplies for the PD6920x PSE managers. Signed-off-by: Kory Maincent (Dent Project) Reviewed-by: Oleksij Rempel Link: https://patch.msgid.link/20250617-feature_poe_port_prio-v14-10-78a1a645e2ee@bootlin.com Signed-off-by: Jakub Kicinski