linux.git/drivers/nvmem, branch v7.2-rc7

nvmem: layouts: Add fixed-layout driver

2026-07-31T09:00:13+00:00

Current implementation isn't working well when device tree nodes have a
phandle on a fixed-layout nvmem node. As the fixed layout is handled in
nvmem core, no driver is ever associated with the layout, and the device
consumer driver probe is deferred indefinitely.

Remove the specific handling of fixed-layout and add a layout driver.
This makes the fixed-layout similar to all other layouts, fixing the
whole issue.

Fixes: fc29fd821d9a ("nvmem: core: Rework layouts to become regular devices")
Cc: stable@vger.kernel.org
Reviewed-by: Miquel Raynal 
Signed-off-by: Mathieu Dubois-Briand 
Signed-off-by: Srinivas Kandagatla 
Link: https://patch.msgid.link/20260724223404.629248-3-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman

nvmem: apple-spmi-nvmem: wrap regmap calls to satisfy CFI

2026-07-31T09:00:13+00:00

The Apple SPMI NVMEM driver previously cast regmap_bulk_read/write to
void * when assigning them to nvmem_config's reg_read/reg_write
function pointers.

This cast breaks the expected function signature of nvmem_reg_read_t
and nvmem_reg_write_t. With CFI enabled, indirect calls through
these pointers fail:

  CFI failure at nvmem_reg_write+0x194/0x1e4 (target: regmap_bulk_write+0x0/0x2c8; expected type: 0x83a189c3)
  ...
  Call trace:
   nvmem_reg_write+0x194/0x1e4 (P)
   __nvmem_cell_entry_write+0x298/0x2e8
   nvmem_cell_write+0x24/0x34
   macsmc_reboot_probe+0x1dc/0x454 [macsmc_reboot]
  ...

Introduce thin wrapper functions with the correct nvmem function
pointer types to satisfy the CFI checks.

Fixes: fe91c24a551c ("nvmem: Add apple-spmi-nvmem driver")
Signed-off-by: Aelin Reidel 
Reported-by: Clayton Craft 
Tested-by: Clayton Craft 
Reviewed-by: Sven Peter 
Cc: stable@vger.kernel.org
Signed-off-by: Srinivas Kandagatla 
Link: https://patch.msgid.link/20260724223404.629248-2-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman

Replace by more specific (c files)

2026-07-03T05:38:17+00:00

Replace the #include of  by the more specific
 where applicable. For most cases the include
can be dropped completely, only a few drivers need one or two headers
added.

Acked-by: Danilo Krummrich 
Acked-by: Takashi Sakamoto 
Acked-by: Bjorn Helgaas 
Link: https://patch.msgid.link/1a3f2007c5c5dcf555c09a4035ce3ae8ef1b6c49.1782808461.git.u.kleine-koenig@baylibre.com
Signed-off-by: Uwe Kleine-König (The Capable Hub)

nvmem: core: fix use-after-free bugs in error paths

2026-06-05T15:18:58+00:00

Fix several instances of error paths in which we call
__nvmem_device_put() - which may end up freeing the underlying memory
and other resources - and then keep on using the nvmem structure. Always
put the reference to the nvmem device as the last step before returning
the error code.

Cc: stable@vger.kernel.org
Fixes: 7ae6478b304b ("nvmem: core: rework nvmem cell instance creation")
Fixes: e888d445ac33 ("nvmem: resolve cells from DT at registration time")
Signed-off-by: Bartosz Golaszewski 
Signed-off-by: Srinivas Kandagatla 
Link: https://patch.msgid.link/20260530204340.116743-3-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman

nvmem: layouts: onie-tlv: fix hang on unknown types

2026-06-05T15:18:58+00:00

The EEPROM on my board has a vendor specific entry of type 0x41. When
stumbling upon that, this driver hangs in an endless loop.

Fix it by keep incrementing the offset on unknown entries, so the loop
will eventually stop.

Fixes: d3c0d12f6474 ("nvmem: layouts: onie-tlv: Add new layout driver")
Cc: Stable@vger.kernel.org
Signed-off-by: Andre Heider 
Reviewed-by: Miquel Raynal 
Signed-off-by: Srinivas Kandagatla 
Link: https://patch.msgid.link/20260530204340.116743-2-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman

Merge tag 'v7.0-rc7' into char-misc-next

2026-04-06T07:04:53+00:00

We need the char/misc/iio/comedi fixes in here as well for testing

Signed-off-by: Greg Kroah-Hartman

nvmem: zynqmp_nvmem: Fix buffer size in DMA and memcpy

2026-04-02T14:44:40+00:00

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

2026-04-02T14:44:40+00:00

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

nvmem: rockchip-otp: Add support for RK3528

2026-04-02T14:15:56+00:00

Add support for the OTP controller in RK3528. The OTPC is similar to the
OTPC in RK3562 and RK3568, exept for a missing phy clock and reset.

Signed-off-by: Jonas Karlman 
Signed-off-by: Heiko Stuebner 
Tested-by: Willy Tarreau 
Signed-off-by: Srinivas Kandagatla 
Link: https://patch.msgid.link/20260327131751.3026030-10-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman

nvmem: rockchip-otp: Add support for RK3562

2026-04-02T14:15:56+00:00

This adds the necessary data for handling otp on the rk3562.

Signed-off-by: Finley Xiao 
Signed-off-by: Kever Yang 
Signed-off-by: Heiko Stuebner 
Tested-by: Willy Tarreau 
Reviewed-by: Heiko Stuebner 
Signed-off-by: Srinivas Kandagatla 
Signed-off-by: Jonas Karlman 
Link: https://patch.msgid.link/20260327131751.3026030-9-srini@kernel.org
Signed-off-by: Greg Kroah-Hartman