kernel/linux.git/drivers/nvmem, branch v6.19.12

nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy

2026-04-11T12:29:53+00:00

commit f9b88613ff402aa6fe8fd020573cb95867ae947e upstream. Buffer size used in dma allocation and memcpy is wrong. It can lead to undersized DMA buffer access and possible memory corruption. use correct buffer size in dma_alloc_coherent and memcpy. Fixes: 737c0c8d07b5 ("nvmem: zynqmp_nvmem: Add support to access efuse") Cc: stable@vger.kernel.org Signed-off-by: Ivan Vera Signed-off-by: Harish Ediga Signed-off-by: Harsh Jain Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260327131645.3025781-3-srini@kernel.org Signed-off-by: Greg Kroah-Hartman

nvmem: imx: assign nvmem_cell_info::raw_len

2026-04-11T12:29:53+00:00

commit 48b5163c957548f5854f14c90bfdedc33afbea3c upstream. Avoid getting error messages at startup like the following on i.MX6ULL: nvmem imx-ocotp0: cell mac-addr raw len 6 unaligned to nvmem word size 4 nvmem imx-ocotp0: cell mac-addr raw len 6 unaligned to nvmem word size 4 This shouldn't cause any functional change as this alignment would otherwise be done in nvmem_cell_info_to_nvmem_cell_entry_nodup(). Cc: stable@vger.kernel.org Fixes: 13bcd440f2ff ("nvmem: core: verify cell's raw_len") Signed-off-by: Christian Eggers Signed-off-by: Fabio Estevam Signed-off-by: Srinivas Kandagatla Link: https://patch.msgid.link/20260327131645.3025781-2-srini@kernel.org Signed-off-by: Greg Kroah-Hartman Signed-off-by: Greg Kroah-Hartman

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