[PATCH v1] board: mpfs_icicle: fix board_fit_config_name_match()

[Leo Liang]

On Mon, Jul 07, 2025 at 01:13:33PM +0100, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley at microchip.com>
> 
> The loop in the icicle implementation of board_fit_config_name_match()
> runs strtok() to split off the vendor portion of the compatible string
> using , as the delimiter. strtok() modifies a string in place, so where
> the first config and compatible do not match, the compatible has been
> modified by the time the loop hits the second iteration.
> Since stringlists in dt land are null separated strings, the nulls
> strtok() inserts to replace the delimiter increase the number of strings
> in the compatible list. When the second iteration of the loop calls
> fdt_stringlist_get(), it gets the vendorless portion of the first
> compatible string, rather than the second compatible string. Copy each
> compatible before calling strtok() to avoid this problem.
> 
> The temporary string the compatible is copied to is statically
> allocated, as attempts to dynamically allocate it at this stage of boot
> were met with "alloc space exhausted" errors.
> 
> Fixes: 7c16ebba1ed ("board: mpfs_icicle: implement board_fdt_blob_setup()/board_fit_config_name_match()")
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---
> CC: Conor Dooley <conor.dooley at microchip.com>
> CC: Cyril Jean <cyril.jean at microchip.com>
> CC: Tom Rini <trini at konsulko.com>
> CC: Leo Yu-Chi Liang <ycliang at andestech.com>
> CC: u-boot at lists.denx.de
> ---
>  board/microchip/mpfs_icicle/mpfs_icicle.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)

Reviewed-by: Leo Yu-Chi Liang <ycliang at andestech.com>