kernel/linux.git/drivers/nvmem, branch v6.19.11

nvmem: Drop OF node reference on nvmem_add_one_cell() failure

2026-03-04T12:21:27+00:00

[ Upstream commit f397bc0781553d01b4cdba506c09334a31cb0ec5 ] If nvmem_add_one_cell() failed, the ownership of "child" (or "info.np"), thus its OF reference, is not passed further and function should clean up by putting the reference it got via earlier of_node_get(). Note that this is independent of references obtained via for_each_child_of_node() loop. Fixes: 50014d659617 ("nvmem: core: use nvmem_add_one_cell() in nvmem_add_cells_from_of()") Cc: stable@vger.kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260116170846.733558-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

nvmem: an8855: drop an unused Kconfig symbol

2026-02-26T23:01:26+00:00

[ Upstream commit 4796eaafd6a170db012395a40385d2baf4f4d118 ] MFD_AIROHA_AN8855 is referenced here but never defined, so drop it from the Kconfig file. Fixes: e2258cfd9b98 ("nvmem: an8855: Add support for Airoha AN8855 Switch EFUSE") Signed-off-by: Randy Dunlap Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260116170846.733558-4-srini@kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

Merge tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2025-12-07T02:34:24+00:00

Pull char/misc/IIO driver updates from Greg KH: "Here is the big set of char/misc/iio driver updates for 6.19-rc1. Lots of stuff in here including: - lots of IIO driver updates, cleanups, and additions - large interconnect driver changes as they get converted over to a dynamic system of ids - coresight driver updates - mwave driver updates - binder driver updates and changes - comedi driver fixes now that the fuzzers are being set loose on them - nvmem driver updates - new uio driver addition - lots of other small char/misc driver updates, full details in the shortlog All of these have been in linux-next for a while now" * tag 'char-misc-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (304 commits) char: applicom: fix NULL pointer dereference in ac_ioctl hangcheck-timer: fix coding style spacing hangcheck-timer: Replace %Ld with %lld hangcheck-timer: replace printk(KERN_CRIT) with pr_crit uio: Add SVA support for PCI devices via uio_pci_generic_sva.c dt-bindings: slimbus: fix warning from example intel_th: Fix error handling in intel_th_output_open misc: rp1: Fix an error handling path in rp1_probe() char: xillybus: add WQ_UNBOUND to alloc_workqueue users misc: bh1770glc: use pm_runtime_resume_and_get() in power_state_store misc: cb710: Fix a NULL vs IS_ERR() check in probe() mux: mmio: Add suspend and resume support virt: acrn: split acrn_mmio_dev_res out of acrn_mmiodev greybus: gb-beagleplay: Fix timeout handling in bootloader functions greybus: add WQ_PERCPU to alloc_workqueue users char/mwave: drop typedefs char/mwave: drop printk wrapper char/mwave: remove printk tracing char/mwave: remove unneeded fops char/mwave: remove MWAVE_FUTZ_WITH_OTHER_DEVICES ifdeffery ...

nvmem: layouts: fix nvmem_layout_bus_uevent

2025-11-24T17:08:10+00:00

correctly check the ENODEV return value. Fixes: 810b790033cc ("nvmem: layouts: fix automatic module loading") CC: stable@vger.kernel.org Co-developed-by: WangYuli Signed-off-by: WangYuli Signed-off-by: Wentao Guan Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20251114110539.143154-1-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: imx-ocotp-ele: Add i.MX94 OCOTP support

2025-11-24T17:06:22+00:00

Add OCOTP device type for i.MX94, including register offset, total size, and fuse layout. This enables NVMEM access to the eFuse of i.MX94. Signed-off-by: Alice Guo Reviewed-by: Peng Fan Reviewed-by: Frank Li Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20251114110636.143268-9-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: layouts: u-boot-env: add optional "env-size" property

2025-11-24T17:06:22+00:00

Some devices reserve a larger NVMEM region for the U-Boot environment than the actual environment data length used by U-Boot itself. The CRC32 in the U-Boot header is calculated over the smaller data length, causing CRC validation to fail when Linux reads the full partition. Allow an optional device tree property "env-size" to specify the environment data size to use for CRC computation. v2: add missing $ref line to DT binding Signed-off-by: Jascha Sundaresan Reviewed-by: Rob Herring (Arm) Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20251114110636.143268-5-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: Add driver for the eeprom in qnap-mcu controllers

2025-11-24T17:06:22+00:00

The qnap-mcu also has an eeprom connected to it, that contains some specific product-information like the mac addresses for the network interfaces. Add a nvmem driver for it. Signed-off-by: Heiko Stuebner Acked-by: Srinivas Kandagatla Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20251114110636.143268-4-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: rcar-efuse: add missing MODULE_DEVICE_TABLE

2025-10-22T06:02:38+00:00

The nvmem-rcar-efuse driver can be compiled as a module. Add missing MODULE_DEVICE_TABLE so it can be matched by modalias and automatically loaded by udev. Cc: stable@vger.kernel.org Fixes: 1530b923a514 ("nvmem: Add R-Car E-FUSE driver") Signed-off-by: Cosmin Tanislav Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20250919142856.2313927-1-cosmin-gabriel.tanislav.xa@renesas.com Signed-off-by: Greg Kroah-Hartman

Merge tag 'char-misc-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2025-10-07T19:13:26+00:00

Pull char/misc fixes from Greg KH: "Here are some small nvmem and fastrpc fixes that missed the cut-off to get into 6.17-final, due to me being slow in getting them out, my fault, not the maintainers of these subsystems :( Anyway, better late than never. Changes included in here are: - nvmem fix for automatic module loading - fastrpc driver fixes for reported issues All of these have been in linux-next for weeks (4?) with no reported issues" * tag 'char-misc-6.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: misc: fastrpc: Skip reference for DMA handles misc: fastrpc: fix possible map leak in fastrpc_put_args misc: fastrpc: Fix fastrpc_map_lookup operation misc: fastrpc: Save actual DMA size in fastrpc_map structure nvmem: layouts: fix automatic module loading

nvmem: layouts: fix automatic module loading

2025-09-12T14:34:06+00:00

To support loading of a layout module automatically the MODALIAS variable in the uevent is needed. Add it. Fixes: fc29fd821d9a ("nvmem: core: Rework layouts to become regular devices") Cc: stable@vger.kernel.org Signed-off-by: Michael Walle Reviewed-by: Miquel Raynal Signed-off-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/20250912131347.303345-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman