linux-stable.git/drivers/nvmem, branch v6.6.26

nvmem: meson-efuse: fix function pointer type mismatch

2024-04-03T13:28:28+00:00

[ Upstream commit cbd38332c140829ab752ba4e727f98be5c257f18 ]

clang-16 warns about casting functions to incompatible types, as is done
here to call clk_disable_unprepare:

drivers/nvmem/meson-efuse.c:78:12: error: cast from 'void (*)(struct clk *)' to 'void (*)(void *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict]
   78 |                                        (void(*)(void *))clk_disable_unprepare,

The pattern of getting, enabling and setting a disable callback for a
clock can be replaced with devm_clk_get_enabled(), which also fixes
this warning.

Fixes: 611fbca1c861 ("nvmem: meson-efuse: add peripheral clock")
Cc: Stable@vger.kernel.org
Reported-by: Arnd Bergmann 
Signed-off-by: Jerome Brunet 
Reviewed-by: Martin Blumenstingl 
Acked-by: Arnd Bergmann 
Reviewed-by: Justin Stitt 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20240224114023.85535-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Sasha Levin

nvmem: brcm_nvram: store a copy of NVRAM content

2024-01-01T12:42:44+00:00

commit 1e37bf84afacd5ba17b7a13a18ca2bc78aff05c0 upstream.

This driver uses MMIO access for reading NVRAM from a flash device.
Underneath there is a flash controller that reads data and provides
mapping window.

Using MMIO interface affects controller configuration and may break real
controller driver. It was reported by multiple users of devices with
NVRAM stored on NAND.

Modify driver to read & cache NVRAM content during init and use that
copy to provide NVMEM data when requested. On NAND flashes due to their
alignment NVRAM partitions can be quite big (1 MiB and more) while
actual NVRAM content stays quite small (usually 16 to 32 KiB). To avoid
allocating so much memory check for actual data length.

Link: https://lore.kernel.org/linux-mtd/CACna6rwf3_9QVjYcM+847biTX=K0EoWXuXcSMkJO1Vy_5vmVqA@mail.gmail.com/
Fixes: 3fef9ed0627a ("nvmem: brcm_nvram: new driver exposing Broadcom's NVRAM")
Cc:  
Cc: Arınç ÜNAL 
Cc: Florian Fainelli 
Cc: Scott Branden 
Signed-off-by: Rafał Miłecki 
Acked-by: Arınç ÜNAL 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20231215111358.316727-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Greg Kroah-Hartman

nvmem: Do not expect fixed layouts to grab a layout driver

2023-12-13T17:45:31+00:00

commit b7c1e53751cb3990153084f31c41f25fde3b629c upstream.

Two series lived in parallel for some time, which led to this situation:
- The nvmem-layout container is used for dynamic layouts
- We now expect fixed layouts to also use the nvmem-layout container but
this does not require any additional driver, the support is built-in the
nvmem core.

Ensure we don't refuse to probe for wrong reasons.

Fixes: 27f699e578b1 ("nvmem: core: add support for fixed cells *layout*")
Cc: stable@vger.kernel.org
Reported-by: Luca Ceresoli 
Signed-off-by: Miquel Raynal 
Tested-by: Rafał Miłecki 
Tested-by: Luca Ceresoli 
Reviewed-by: Luca Ceresoli 
Link: https://lore.kernel.org/r/20231124193814.360552-1-miquel.raynal@bootlin.com
Signed-off-by: Greg Kroah-Hartman

nvmem: imx: correct nregs for i.MX6ULL

2023-10-16T19:00:08+00:00

The nregs for i.MX6ULL should be 80 per fuse map, correct it.

Fixes: ffbc34bf0e9c ("nvmem: imx-ocotp: Implement i.MX6ULL/ULZ support")
Cc: Stable@vger.kernel.org
Signed-off-by: Peng Fan 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20231013124904.175782-4-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: imx: correct nregs for i.MX6UL

2023-10-16T19:00:08+00:00

The nregs for i.MX6UL should be 144 per fuse map, correct it.

Fixes: 4aa2b4802046 ("nvmem: octop: Add support for imx6ul")
Cc: Stable@vger.kernel.org
Signed-off-by: Peng Fan 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20231013124904.175782-3-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: imx: correct nregs for i.MX6SLL

2023-10-16T19:00:08+00:00

The nregs for i.MX6SLL should be 80 per fuse map, correct it.

Fixes: 6da27821a6f5 ("nvmem: imx-ocotp: add support for imx6sll")
Cc: Stable@vger.kernel.org
Signed-off-by: Peng Fan 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20231013124904.175782-2-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: core: Notify when a new layout is registered

2023-08-23T14:34:02+00:00

Tell listeners a new layout was introduced and is now available.

Signed-off-by: Miquel Raynal 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20230823132744.350618-23-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: core: Do not open-code existing functions

2023-08-23T14:34:02+00:00

Use of_nvmem_layout_get_container() instead of hardcoding it.

Signed-off-by: Miquel Raynal 
Reviewed-by: Michael Walle 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20230823132744.350618-22-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: core: Create all cells before adding the nvmem device

2023-08-23T14:34:02+00:00

Let's pack all the cells creation in one place, so they are all created
before we add the nvmem device.

Signed-off-by: Miquel Raynal 
Reviewed-by: Michael Walle 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20230823132744.350618-20-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman

nvmem: u-boot-env:: Replace zero-length array with DECLARE_FLEX_ARRAY() helper

2023-08-23T14:34:02+00:00

We are moving toward replacing zero-length arrays with C99 flexible-array
members since they are deprecated. Therefore, the new DECLARE_FLEX_ARRAY()
helper macro should be used to replace the zero-length array declaration.

This fixes warnings such as:
./drivers/nvmem/u-boot-env.c:50:9-13: WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)

Signed-off-by: Atul Raut 
Signed-off-by: Srinivas Kandagatla 
Link: https://lore.kernel.org/r/20230823132744.350618-19-srinivas.kandagatla@linaro.org
Signed-off-by: Greg Kroah-Hartman