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mirror-linux/drivers/base/regmap
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bui duc phuc 006c66d1d5
regmap: reject volatile update_bits() in cache-only mode 
Prevent _regmap_update_bits() from accessing hardware when the register
map is in cache-only mode.

Unlike regmap_raw_read() and _regmap_read(), the volatile
_regmap_update_bits() fast path bypasses the cache_only check. This can
result in unexpected hardware accesses while the device is suspended.

Return -EBUSY to ensure behavior is consistent with other cache-only
access paths.

Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
Link: https://patch.msgid.link/20260528053204.46783-1-phucduc.bui@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
 		2026-05-28 15:15:46 +01:00
..
Kconfig regmap: mdio: make it depend on PHYLIB 2026-03-18 18:27:12 -07:00
Makefile regmap: Provide a ram backed regmap with raw support 2023-06-12 14:47:54 +01:00
internal.h regmap: debugfs: fix race condition in dummy name allocation 2026-04-09 20:50:54 +01:00
regcache-flat.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
regcache-maple.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
regcache-rbtree.c treewide: Replace kmalloc with kmalloc_obj for non-scalar types 2026-02-21 01:02:28 -08:00
regcache.c regcache: Move HW readback after cache initialisation 2026-03-05 15:23:01 +00:00
regmap-ac97.c regmap: add missing MODULE_DESCRIPTION() macros 2024-06-24 13:38:40 +01:00
regmap-debugfs.c regmap: debugfs: fix race condition in dummy name allocation 2026-04-09 20:50:54 +01:00
regmap-fsi.c regmap: Add FSI bus support 2022-11-25 19:17:02 +00:00
regmap-i2c.c regmap-i2c: add SMBus byte/word reg16 bus for adapters lacking I2C_FUNC_I2C 2026-04-13 18:05:58 +01:00
regmap-i3c.c regmap: i3c: Add non-devm regmap_init_i3c() helper 2026-04-10 11:46:15 +01:00
regmap-irq.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-kunit.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-mdio.c regmap: Drop capitalisation in MODULE_DESCRIPTION() 2024-04-10 22:45:52 +01:00
regmap-mmio.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-ram.c regmap: ram: fix memory leaks in __regmap_init_ram() on error 2026-04-17 12:07:31 +01:00
regmap-raw-ram.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-sccb.c regmap: add missing MODULE_DESCRIPTION() macros 2024-06-24 13:38:40 +01:00
regmap-sdw-mbq.c regmap: sdw-mbq: Fix spelling mistake "undeferable" -> "undeferrable" 2026-04-27 06:48:16 +09:00
regmap-sdw.c regmap: Drop capitalisation in MODULE_DESCRIPTION() 2024-04-10 22:45:52 +01:00
regmap-slimbus.c regmap: slimbus: fix bus_context pointer in regmap init calls 2025-10-23 15:19:58 +01:00
regmap-spi-avmm.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-spi.c Convert 'alloc_obj' family to use the new default GFP_KERNEL argument 2026-02-21 17:09:51 -08:00
regmap-spmi.c regmap: add missing MODULE_DESCRIPTION() macros 2024-06-24 13:38:40 +01:00
regmap-w1.c regmap: add missing MODULE_DESCRIPTION() macros 2024-06-24 13:38:40 +01:00
regmap.c regmap: reject volatile update_bits() in cache-only mode 2026-05-28 15:15:46 +01:00
trace.h tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00