linux

Ivan Stepchenko 6e1acbe563 mtd: lpddr_cmds: fix signed shifts in lpddr_cmds [ Upstream commit `c909fec69f` ] There are several places where a value of type 'int' is shifted by lpddr->chipshift. lpddr->chipshift is derived from QINFO geometry and might reach 31 when QINFO reports a 2 GiB size - the maximum supported by LPDDR(1) compliant chips. This may cause unexpected sign-extensions when casting the integer value to the type of 'unsigned long'. Use '1UL << lpddr->chipshift' and cast 'j' to unsigned long before shifting so the computation is performed at the destination width. Found by Linux Verification Center (linuxtesting.org) with SVACE. Fixes: `c68264711c` ("[MTD] LPDDR Command set driver") Signed-off-by: Ivan Stepchenko <sid@itb.spb.ru> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Sasha Levin <sashal@kernel.org>		History 2025-12-18 13:55:13 +01:00
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Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
lpddr2_nvm.c	mtd: lpddr2_nvm: Convert to platform remove callback returning void	2023-10-16 10:56:48 +02:00
lpddr_cmds.c	mtd: lpddr_cmds: fix signed shifts in lpddr_cmds	2025-12-18 13:55:13 +01:00
Makefile	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
qinfo_probe.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 1	2019-05-21 11:28:39 +02:00