Re: [PATCH 5.10.y] iio: imu: inv_icm42600: fix spi burst write not supported

[Sasha Levin <sashal@kernel.org>]

[ Sasha's backport helper bot ]

Hi,

Found matching upstream commit: c0f866de4ce447bca3191b9cefac60c4b36a7922

WARNING: Author mismatch between patch and found commit:
Backport author: inv.git-commit@tdk.com
Commit author: Jean-Baptiste Maneyrol<jean-baptiste.maneyrol@tdk.com>


Status in newer kernel trees:
6.12.y | Not found
6.6.y | Not found
6.1.y | Not found
5.15.y | Not found
5.10.y | Not found

Note: The patch differs from the upstream commit:
---
1:  c0f866de4ce4 ! 1:  64636852bc5b iio: imu: inv_icm42600: fix spi burst write not supported
    @@ Commit message
         Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@tdk.com>
         Link: https://patch.msgid.link/20241112-inv-icm42600-fix-spi-burst-write-not-supported-v2-1-97690dc03607@tdk.com
         Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
    +    (cherry picked from commit c0f866de4ce447bca3191b9cefac60c4b36a7922)
     
      ## drivers/iio/imu/inv_icm42600/inv_icm42600.h ##
    -@@ drivers/iio/imu/inv_icm42600/inv_icm42600.h: struct inv_icm42600_sensor_state {
    +@@ drivers/iio/imu/inv_icm42600/inv_icm42600.h: struct inv_icm42600_state {
      typedef int (*inv_icm42600_bus_setup)(struct inv_icm42600_state *);
      
      extern const struct regmap_config inv_icm42600_regmap_config;
    @@ drivers/iio/imu/inv_icm42600/inv_icm42600.h: struct inv_icm42600_sensor_state {
      ## drivers/iio/imu/inv_icm42600/inv_icm42600_core.c ##
     @@ drivers/iio/imu/inv_icm42600/inv_icm42600_core.c: const struct regmap_config inv_icm42600_regmap_config = {
      };
    - EXPORT_SYMBOL_NS_GPL(inv_icm42600_regmap_config, "IIO_ICM42600");
    + EXPORT_SYMBOL_GPL(inv_icm42600_regmap_config);
      
     +/* define specific regmap for SPI not supporting burst write */
     +const struct regmap_config inv_icm42600_spi_regmap_config = {
    -+	.name = "inv_icm42600",
     +	.reg_bits = 8,
     +	.val_bits = 8,
     +	.max_register = 0x4FFF,
     +	.ranges = inv_icm42600_regmap_ranges,
     +	.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
    -+	.volatile_table = inv_icm42600_regmap_volatile_accesses,
    -+	.rd_noinc_table = inv_icm42600_regmap_rd_noinc_accesses,
    -+	.cache_type = REGCACHE_RBTREE,
     +	.use_single_write = true,
     +};
    -+EXPORT_SYMBOL_NS_GPL(inv_icm42600_spi_regmap_config, "IIO_ICM42600");
    ++EXPORT_SYMBOL_GPL(inv_icm42600_spi_regmap_config);
     +
      struct inv_icm42600_hw {
      	uint8_t whoami;
    @@ drivers/iio/imu/inv_icm42600/inv_icm42600_core.c: const struct regmap_config inv
      ## drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c ##
     @@ drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c: static int inv_icm42600_probe(struct spi_device *spi)
      		return -EINVAL;
    - 	chip = (uintptr_t)match;
    + 	chip = (enum inv_icm42600_chip)match;
      
     -	regmap = devm_regmap_init_spi(spi, &inv_icm42600_regmap_config);
     +	/* use SPI specific regmap */
---

Results of testing on various branches:

| Branch                    | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-5.10.y       |  Success    |  Success   |