linux/drivers/w1/masters, branch master

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

2026-02-22T01:09:51Z

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

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28Z

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

w1: omap-hdq: Remove redundant pm_runtime_mark_last_busy() calls

2025-11-11T09:55:18Z

pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(), pm_runtime_autosuspend() and pm_request_autosuspend() now include a call to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to pm_runtime_mark_last_busy(). Signed-off-by: Sakari Ailus Link: https://patch.msgid.link/20251111094302.95003-1-sakari.ailus@linux.intel.com Signed-off-by: Krzysztof Kozlowski

w1: matrox: Remove some deadcode in matrox_w1_remove()

2025-08-31T12:14:07Z

The .remove function can only be called if the .probe() succeeds. So there is no need to keep track of a successful probe in 'found'. Simplify code accordingly. Signed-off-by: Christophe JAILLET Link: https://lore.kernel.org/r/458641ad2d7a7adf30a03e70038304f0e6a81ff4.1755770484.git.christophe.jaillet@wanadoo.fr Signed-off-by: Krzysztof Kozlowski

w1: fix NULL pointer dereference in probe

2025-02-03T11:52:49Z

The w1_uart_probe() function calls w1_uart_serdev_open() (which includes devm_serdev_device_open()) before setting the client ops via serdev_device_set_client_ops(). This ordering can trigger a NULL pointer dereference in the serdev controller's receive_buf handler, as it assumes serdev->ops is valid when SERPORT_ACTIVE is set. This is similar to the issue fixed in commit 5e700b384ec1 ("platform/chrome: cros_ec_uart: properly fix race condition") where devm_serdev_device_open() was called before fully initializing the device. Fix the race by ensuring client ops are set before enabling the port via w1_uart_serdev_open(). Fixes: a3c08804364e ("w1: add UART w1 bus driver") Signed-off-by: Chenyuan Yang Acked-by: Christoph Winklhofer Link: https://lore.kernel.org/r/20250111181803.2283611-1-chenyuan0y@gmail.com Signed-off-by: Krzysztof Kozlowski

Merge tag 'w1-drv-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1 into char-misc-next

2025-01-09T09:54:19Z

Krzysztof writes: 1-Wire bus drivers for v6.14 1. ds2482: Add support for handling the VCC regulator supply and three more minor improvements/cleanups. 2. Constify 'struct bin_attribute' in all drivers. 3. W1 core: use sysfs_emit() instead of sprintf(), as preferred coding style. * tag 'w1-drv-6.14' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/krzk/linux-w1: w1: core: use sysfs_emit() instead of sprintf() w1: ds28e04: Constify 'struct bin_attribute' w1: ds2805: Constify 'struct bin_attribute' w1: ds2781: Constify 'struct bin_attribute' w1: ds2780: Constify 'struct bin_attribute' w1: ds2438: Constify 'struct bin_attribute' w1: ds2433: Constify 'struct bin_attribute' w1: ds2431: Constify 'struct bin_attribute' w1: ds2430: Constify 'struct bin_attribute' w1: ds2413: Constify 'struct bin_attribute' w1: ds2408: Constify 'struct bin_attribute' w1: ds2406: Constify 'struct bin_attribute' w1: Constify 'struct bin_attribute' w1: ds2482: Fix datasheet URL w1: ds2482: Add regulator support w1: ds2482: switch to devm_kzalloc() from kzalloc() dt-bindings: w1: ds2482: Add vcc-supply property

w1: ds2482: Fix datasheet URL

2024-12-03T14:53:29Z

Current link does redirect to wrong place. Signed-off-by: Kryštof Černý Link: https://lore.kernel.org/r/20241129-ds2482-add-reg-v6-4-bd95ad171e19@gmail.com Signed-off-by: Krzysztof Kozlowski

w1: ds2482: Add regulator support

2024-12-03T14:53:29Z

Adds a support for attaching a supply regulator. Signed-off-by: Kryštof Černý Link: https://lore.kernel.org/r/20241129-ds2482-add-reg-v6-3-bd95ad171e19@gmail.com Signed-off-by: Krzysztof Kozlowski

w1: ds2482: switch to devm_kzalloc() from kzalloc()

2024-12-03T14:53:28Z

Refactored the driver to devm_kzalloc() from kzalloc(), so the future driver edits are easier and less error-prone. Signed-off-by: Kryštof Černý Link: https://lore.kernel.org/r/20241129-ds2482-add-reg-v6-2-bd95ad171e19@gmail.com Signed-off-by: Krzysztof Kozlowski

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43Z

The continual trickle of small conversion patches is grating on me, and is really not helping. Just get rid of the 'remove_new' member function, which is just an alias for the plain 'remove', and had a comment to that effect: /* * .remove_new() is a relic from a prototype conversion of .remove(). * New drivers are supposed to implement .remove(). Once all drivers are * converted to not use .remove_new any more, it will be dropped. */ This was just a tree-wide 'sed' script that replaced '.remove_new' with '.remove', with some care taken to turn a subsequent tab into two tabs to make things line up. I did do some minimal manual whitespace adjustment for places that used spaces to line things up. Then I just removed the old (sic) .remove_new member function, and this is the end result. No more unnecessary conversion noise. Signed-off-by: Linus Torvalds