On Tue, 2020-11-24 at 06:25:06 UTC, Sven Eckelmann wrote:
Some devices (especially QCA ones) are already using hardcoded partition names with colons in it. The OpenMesh A62 for example provides following mtd relevant information via cmdline:
root=31:11 mtdparts=spi0.0:256k(0:SBL1),128k(0:MIBIB),384k(0:QSEE),64k(0:CDT),64k(0:DDRPARAMS),64k(0:APPSBLENV),512k(0:APPSBL),64k(0:ART),64k(custom),64k(0:KEYS),0x002b0000(kernel),0x00c80000(rootfs),15552k(inactive) rootfsname=rootfs rootwait
The change to split only on the last colon between mtd-id and partitions will cause newpart to see following string for the first partition:
KEYS),0x002b0000(kernel),0x00c80000(rootfs),15552k(inactive)
Such a partition list cannot be parsed and thus the device fails to boot.
Avoid this behavior by making sure that the start of the first part-name ("(") will also be the last byte the mtd-id split algorithm is using for its colon search.
Fixes: eb13fa022741 ("mtd: parser: cmdline: Support MTD names containing one or more colons") Cc: stable@vger.kernel.org Cc: Ron Minnich rminnich@google.com Signed-off-by: Sven Eckelmann sven@narfation.org
Applied to https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git mtd/next, thanks.
Miquel