kernel/linux.git/drivers/memory, branch v6.12.80

memory: mtk-smi: fix device leak on larb probe

2026-03-13T16:20:21+00:00

[ Upstream commit 9dae65913b32d05dbc8ff4b8a6bf04a0e49a8eb6 ] Make sure to drop the reference taken when looking up the SMI device during larb probe on late probe failure (e.g. probe deferral) and on driver unbind. Fixes: cc8bbe1a8312 ("memory: mediatek: Add SMI driver") Fixes: 038ae37c510f ("memory: mtk-smi: add missing put_device() call in mtk_smi_device_link_common") Cc: stable@vger.kernel.org # 4.6: 038ae37c510f Cc: stable@vger.kernel.org # 4.6 Cc: Yong Wu Cc: Miaoqian Lin Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251121164624.13685-3-johan@kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin

memory: mtk-smi: fix device leaks on common probe

2026-03-13T16:20:20+00:00

[ Upstream commit 6cfa038bddd710f544076ea2ef7792fc82fbedd6 ] Make sure to drop the reference taken when looking up the SMI device during common probe on late probe failure (e.g. probe deferral) and on driver unbind. Fixes: 47404757702e ("memory: mtk-smi: Add device link for smi-sub-common") Fixes: 038ae37c510f ("memory: mtk-smi: add missing put_device() call in mtk_smi_device_link_common") Cc: stable@vger.kernel.org # 5.16: 038ae37c510f Cc: stable@vger.kernel.org # 5.16 Cc: Yong Wu Cc: Miaoqian Lin Signed-off-by: Johan Hovold Link: https://patch.msgid.link/20251121164624.13685-2-johan@kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin

memory: samsung: exynos-srom: Fix of_iomap leak in exynos_srom_probe

2025-10-19T14:33:54+00:00

commit 6744085079e785dae5f7a2239456135407c58b25 upstream. The of_platform_populate() call at the end of the function has a possible failure path, causing a resource leak. Replace of_iomap() with devm_platform_ioremap_resource() to ensure automatic cleanup of srom->reg_base. This issue was detected by smatch static analysis: drivers/memory/samsung/exynos-srom.c:155 exynos_srom_probe()warn: 'srom->reg_base' from of_iomap() not released on lines: 155. Fixes: 8ac2266d8831 ("memory: samsung: exynos-srom: Add support for bank configuration") Cc: stable@vger.kernel.org Signed-off-by: Zhen Ni Link: https://lore.kernel.org/r/20250806025538.306593-1-zhen.ni@easystack.cn Signed-off-by: Krzysztof Kozlowski Signed-off-by: Greg Kroah-Hartman

memory: omap-gpmc: drop no compatible check

2025-04-10T12:39:31+00:00

[ Upstream commit edcccc6892f65eff5fd3027a13976131dc7fd733 ] We are no longer depending on legacy device trees so drop the no compatible check for NAND and OneNAND nodes. Suggested-by: Rob Herring (Arm) Signed-off-by: Roger Quadros Reviewed-by: Rob Herring (Arm) Link: https://lore.kernel.org/r/20250114-omap-gpmc-drop-no-compatible-check-v1-1-262c8d549732@kernel.org Signed-off-by: Krzysztof Kozlowski Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin

memory: tegra20-emc: fix an OF node reference bug in tegra_emc_find_node_by_ram_code()

2025-02-08T08:57:41+00:00

[ Upstream commit b9784e5cde1f9fb83661a70e580e381ae1264d12 ] As of_find_node_by_name() release the reference of the argument device node, tegra_emc_find_node_by_ram_code() releases some device nodes while still in use, resulting in possible UAFs. According to the bindings and the in-tree DTS files, the "emc-tables" node is always device's child node with the property "nvidia,use-ram-code", and the "lpddr2" node is a child of the "emc-tables" node. Thus utilize the for_each_child_of_node() macro and of_get_child_by_name() instead of of_find_node_by_name() to simplify the code. This bug was found by an experimental verification tool that I am developing. Fixes: 96e5da7c8424 ("memory: tegra: Introduce Tegra20 EMC driver") Signed-off-by: Joe Hattori Link: https://lore.kernel.org/r/20241217091434.1993597-1-joe@pf.is.s.u-tokyo.ac.jp Link: https://lore.kernel.org/r/20241218024415.2494267-3-joe@pf.is.s.u-tokyo.ac.jp [krzysztof: applied v1, adjust the commit msg to incorporate v2 parts] Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin

memory: pl353-smc: simplify with scoped for each OF child loop

2024-08-31T05:44:24+00:00

Use scoped for_each_available_child_of_node_scoped() when iterating over device nodes to make code a bit simpler. Suggested-by: Jonathan Cameron Reviewed-by: Miquel Raynal Link: https://lore.kernel.org/r/20240825135001.48963-2-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: pl172: simplify releasing AMBA regions with devm

2024-08-31T05:44:23+00:00

Use devm_add_action_or_reset() and dev_err_probe() to make the probe() error handling simpler around amba_release_regions() cleanup. This allows to drop the remove() callback entirely. Suggested-by: Jonathan Cameron Acked-by: Vladimir Zapolskiy Reviewed-by: Vladimir Zapolskiy Link: https://lore.kernel.org/r/20240825135001.48963-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski

memory: renesas-rpc-if: Use Hi-Z state as the default setting for IOVF pins

2024-08-31T05:30:32+00:00

The RZ/{G2L,G2LC,V2L} SMARC EVK uses Micron MT25QU412A flash and RZ/G2UL SMARC EVK uses Renesas AT25QL128A flash. With current pin setting for IOVF pin, 4-bit flash write fails for AT25QL128A flash. Use Hi-Z state as the default for IOVF pin, so that spi controller driver in linux will be independent of flash type. To support this, during board production, the bit 4 of the NV config register must be cleared by the bootloader for Micron flash. Output from u-boot after clearing bit4 of NVCR register. => renesas_micron_flash_nvcr SF: Detected mt25qu512a with page size 256 Bytes, erase size 64 KiB, total 64 MiB NVCR=0xef Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20240830203014.199326-2-biju.das.jz@bp.renesas.com Signed-off-by: Krzysztof Kozlowski

memory: mtk-smi: Use devm_clk_get_enabled()

2024-08-25T09:02:17+00:00

Replace devm_clk_get() and clk_prepare_enable() with devm_clk_get_enabled() in .probe(). Fix the bug of missing clk_disable_unprepare() in .remove() by using devm_clk_get_enabled() that can disables and unprepares it automatically on driver detach. Fixes: 3c8f4ad85c4b ("memory/mediatek: add support for mt2701") Cc: honghui.zhang@mediatek.com Signed-off-by: Rong Qianfeng Reviewed-by: Yong Wu Link: https://lore.kernel.org/r/20240821032558.43052-1-rongqianfeng@vivo.com Signed-off-by: Krzysztof Kozlowski

memory: pl353-smc: simplify with devm_clk_get_enabled()

2024-08-25T09:02:16+00:00

Use devm_clk_get_enabled() to drop clock prepare/unprepare parts and make code simpler. Reviewed-by: Miquel Raynal Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/20240823-b4-cleanup-h-guard-v1-7-01668915bd55@linaro.org Signed-off-by: Krzysztof Kozlowski