[PATCH v2] mtd: spinand: fix memory leak of ECC engine conf

[Miquel Raynal]

On Wed, 18 Jun 2025 13:35:16 +0200, Pablo Martin-Gomez wrote:
> Memory allocated for the ECC engine conf is not released during spinand
> cleanup. Below kmemleak trace is seen for this memory leak:
> 
> unreferenced object 0xffffff80064f00e0 (size 8):
>   comm "swapper/0", pid 1, jiffies 4294937458
>   hex dump (first 8 bytes):
>     00 00 00 00 00 00 00 00                          ........
>   backtrace (crc 0):
>     kmemleak_alloc+0x30/0x40
>     __kmalloc_cache_noprof+0x208/0x3c0
>     spinand_ondie_ecc_init_ctx+0x114/0x200
>     nand_ecc_init_ctx+0x70/0xa8
>     nanddev_ecc_engine_init+0xec/0x27c
>     spinand_probe+0xa2c/0x1620
>     spi_mem_probe+0x130/0x21c
>     spi_probe+0xf0/0x170
>     really_probe+0x17c/0x6e8
>     __driver_probe_device+0x17c/0x21c
>     driver_probe_device+0x58/0x180
>     __device_attach_driver+0x15c/0x1f8
>     bus_for_each_drv+0xec/0x150
>     __device_attach+0x188/0x24c
>     device_initial_probe+0x10/0x20
>     bus_probe_device+0x11c/0x160
> 
> [...]

Applied to mtd/fixes, thanks!

[1/1] mtd: spinand: fix memory leak of ECC engine conf
      commit: 6463cbe08b0cbf9bba8763306764f5fd643023e1

Patche(s) should be available on mtd/linux.git and will be
part of the next PR (provided that no robot complains by then).

Kind regards,
Miquèl