kernel/linux.git/drivers/base/regmap, branch master

Merge tag 'regmap-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap

2026-04-15T21:27:51+00:00

Pull regmap updates from Mark Brown: "This has been quite a busy release for regmap, the user visible changes are quite minor but there's some quite good work on internal code improvements: - Cleanup helper for __free()ing regmap_fields - Support non-devm I3C regmaps - A bunch of cleanup work, mostly from Andy Shevchenko - Fix for bootstrapping issues with hardware initialised regmaps, which was the main inspiration for some of the cleanups" * tag 'regmap-v7.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap: regmap: i3c: Add non-devm regmap_init_i3c() helper regmap: debugfs: fix race condition in dummy name allocation regmap: Synchronize cache for the page selector regmap: Simplify devres handling regcache: Move HW readback after cache initialisation regcache: Allocate and free reg_defaults on the same level regcache: Move count check and cache_bypass assignment to the caller regcache: Factor out regcache_hw_exit() helper regcache: Amend printf() specifiers when printing registers regcache: Define iterator inside for-loop and align their types regmap: define cleanup helper for regmap_field regmap: sort header includes regcache: Split regcache_count_cacheable_registers() helper regcache: Remove duplicate check in regcache_hw_init()

regmap: i3c: Add non-devm regmap_init_i3c() helper

2026-04-10T10:46:15+00:00

Add __regmap_init_i3c() and the corresponding regmap_init_i3c() macro to allow creating a regmap for I3C devices without using the device-managed version. This mirrors the pattern already established for other buses such as I2C, SPI and so on, giving drivers more flexibility when the regmap lifetime is not directly tied to the device. Signed-off-by: Pei Xiao Link: https://patch.msgid.link/a81256a8866b163979a20406abf01df7d7440104.1775788105.git.xiaopei01@kylinos.cn Signed-off-by: Mark Brown

regmap: debugfs: fix race condition in dummy name allocation

2026-04-09T19:50:54+00:00

Use IDA instead of a simple counter for generating unique dummy names. The previous implementation used dummy_index++ which is not atomic, leading to potential duplicate names when multiple threads call regmap_debugfs_init() concurrently with name="dummy". Signed-off-by: Zxyan Zhu Link: https://patch.msgid.link/20260409035015.950764-1-zxyan0222@gmail.com Signed-off-by: Mark Brown

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2026-04-02T18:03:13+00:00

Cross-merge networking fixes after downstream PR (net-7.0-rc7). Conflicts: net/vmw_vsock/af_vsock.c b18c83388874 ("vsock: initialize child_ns_mode_locked in vsock_net_init()") 0de607dc4fd8 ("vsock: add G2H fallback for CIDs not owned by H2G transport") Adjacent changes: drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c ceee35e5674a ("bnxt_en: Refactor some basic ring setup and adjustment logic") 57cdfe0dc70b ("bnxt_en: Resize RSS contexts on channel count change") drivers/net/wireless/intel/iwlwifi/mld/mac80211.c 4d56037a02bd ("wifi: iwlwifi: mld: block EMLSR during TDLS connections") 687a95d204e7 ("wifi: iwlwifi: mld: correctly set wifi generation data") drivers/net/wireless/intel/iwlwifi/mld/scan.h b6045c899e37 ("wifi: iwlwifi: mld: Refactor scan command handling") ec66ec6a5a8f ("wifi: iwlwifi: mld: Fix MLO scan timing") drivers/net/wireless/intel/iwlwifi/mvm/fw.c 078df640ef05 ("wifi: iwlwifi: mld: add support for iwl_mcc_allowed_ap_type_cmd v 2") 323156c3541e ("wifi: iwlwifi: mvm: don't send a 6E related command when not supported") Signed-off-by: Jakub Kicinski

regmap: mdio: make it depend on PHYLIB

2026-03-19T01:27:12+00:00

MDIO-based regmap is the last user of config symbol MDIO_BUS. MDIO access needs a MII bus, which requires PHYLIB for the provider part. Therefore make REGMAP_MDIO depend on PHYLIB, what allows to remove config symbol MDIO_BUS in a follow-up patch. Note: After c5a219395b4e ("regmap: Move selecting for REGMAP_MDIO and REGMAP_IRQ") switching to "depends on" should be fine, w/o risk of a circular dependency. Signed-off-by: Heiner Kallweit Acked-by: Mark Brown Link: https://patch.msgid.link/a21a3b3e-272e-4c61-986e-48a2cb3421d9@gmail.com Signed-off-by: Jakub Kicinski

regmap: Synchronize cache for the page selector

2026-03-16T13:50:34+00:00

If the selector register is represented in each page, its value according to the debugfs is stale because it gets synchronized only after the real page switch happens. Hence the regmap cache initialisation from the HW inherits outdated data in the selector register. Synchronize cache for the page selector just in time. Before (offset followed by hexdump, the first byte is selector): // Real registers 18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00 ... // Virtual (per port) 40: 05 ff 00 00 e0 e0 00 00 00 00 00 1f 50: 00 ff 00 00 e0 e0 00 00 00 00 00 1f 60: 01 ff 00 00 ff ff 00 00 00 00 00 00 70: 02 ff 00 00 cf f3 00 00 00 00 00 0c 80: 03 ff 00 00 00 00 00 00 00 00 00 ff 90: 04 ff 00 00 ff 0f 00 00 f0 00 00 00 After: // Real registers 18: 05 ff 00 00 ff 0f 00 00 f0 00 00 00 ... // Virtual (per port) 40: 00 ff 00 00 e0 e0 00 00 00 00 00 1f 50: 01 ff 00 00 e0 e0 00 00 00 00 00 1f 60: 02 ff 00 00 ff ff 00 00 00 00 00 00 70: 03 ff 00 00 cf f3 00 00 00 00 00 0c 80: 04 ff 00 00 00 00 00 00 00 00 00 ff 90: 05 ff 00 00 ff 0f 00 00 f0 00 00 00 Fixes: 6863ca622759 ("regmap: Add support for register indirect addressing.") Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260302184753.2693803-1-andriy.shevchenko@linux.intel.com Tested-by: Marek Szyprowski Signed-off-by: Mark Brown

regmap: Synchronize cache for the page selector

2026-03-16T13:41:28+00:00

regmap: Simplify devres handling

2026-03-05T21:14:54+00:00

The resource-managed devm_regmap_init() can be a bit simpler by using devm_add_action_or_reset() instead of devres_alloc(). This allows to drop the less-obvious pointer to pointer (struct regmap **ptr) and make devm_regmap_release() interface simpler. Code is functionally equivalent with minor difference: devres_alloc() will happen now after successful resource init (__regmap_init()). Signed-off-by: Krzysztof Kozlowski Link: https://patch.msgid.link/20260305201349.32734-2-krzysztof.kozlowski@oss.qualcomm.com Signed-off-by: Mark Brown

regcache: Move HW readback after cache initialisation

2026-03-05T15:23:01+00:00

Make sure that cache is initialised before calling any IO using regmap, this makes sure that we won't access NULL or invalid pointers in the cache which hasn't been initialised. As a side effect it also makes the ordering of cleaning up the resources in regcache_exit() to be the same (and correct) as in the error path of regcache_init(). This is not a problem right now as they do not have dependencies, but it makes code robust against potential changes in the future. Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260305085449.3184020-4-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown

regcache: Allocate and free reg_defaults on the same level

2026-03-05T15:23:00+00:00

Currently reg_defaults buffer may be allocated on two different levels when the user provided them and we duplicate it in regcache_init() or when user wants us to read back from HW in regcache_hw_init(). This inconsistency makes code harder to follow and maintain. Allocate and free reg_defaults on the same level in regcache_init() to improve the readability and maintenance efforts. Signed-off-by: Andy Shevchenko Link: https://patch.msgid.link/20260305085449.3184020-3-andriy.shevchenko@linux.intel.com Signed-off-by: Mark Brown