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linux/drivers/base
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Mark Brown 1484537876 regmap: Account for register length in SMBus I/O limits 
commit 0c9d2eb5e9 upstream.

The SMBus I2C buses have limits on the size of transfers they can do but
do not factor in the register length meaning we may try to do a transfer
longer than our length limit, the core will not take care of this.
Future changes will factor this out into the core but there are a number
of users that assume current behaviour so let's just do something
conservative here.

This does not take account padding bits but practically speaking these
are very rarely if ever used on I2C buses given that they generally run
slowly enough to mean there's no issue.

Cc: stable@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Xu Yilun <yilun.xu@intel.com>
Link: https://lore.kernel.org/r/20230712-regmap-max-transfer-v1-2-80e2aed22e83@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2023-07-27 08:46:54 +02:00
..
firmware_loader firmware_loader: use kernel credentials when reading firmware 2022-05-18 10:26:53 +02:00
power PM: domains: fix integer overflow issues in genpd_parse_state() 2023-07-23 13:46:46 +02:00
regmap regmap: Account for register length in SMBus I/O limits 2023-07-27 08:46:54 +02:00
test driver core: Fix test_async_probe_init saves device in wrong array 2023-02-01 08:27:14 +01:00
arch_numa.c memblock: introduce saner 'memblock_free_ptr()' interface 2021-09-14 13:23:22 -07:00
arch_topology.c arm64: topology: move store_cpu_topology() to shared code 2022-10-26 12:34:22 +02:00
attribute_container.c driver core: attribute_container: fix W=1 warnings 2021-05-14 13:37:10 +02:00
auxiliary.c Merge 5.14-rc3 into driver-core-next 2021-07-27 09:22:08 +02:00
base.h software nodes: Split software_node_notify() 2021-07-16 19:17:05 +02:00
bus.c driver: base: fix UAF when driver_attach failed 2022-06-14 18:36:09 +02:00
cacheinfo.c cacheinfo: clear cache_leaves(cpu) in free_cache_attributes() 2021-07-21 17:29:40 +02:00
class.c class: fix possible memory leak in __class_register() 2022-12-31 13:14:27 +01:00
component.c drivers: base: component: fix memory leak with using debugfs_lookup() 2023-03-11 13:57:38 +01:00
container.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
core.c driver core: fix resource leak in device_add() 2023-03-10 09:39:38 +01:00
cpu.c tick/nohz: Fix cpu_is_hotpluggable() by checking with nohz subsystem 2023-05-11 23:00:16 +09:00
dd.c driver core: Don't require dynamic_debug for initcall_debug probe timing 2023-05-01 08:23:24 +09:00
devcoredump.c devcoredump: remove contact information 2021-06-04 15:05:44 +02:00
devres.c devres: Enable trace events 2021-06-15 17:14:36 +02:00
devtmpfs.c devtmpfs regression fix: reconfigure on each mount 2022-01-20 09:13:13 +01:00
driver.c drivers: base: Convert to printk alias functions 2020-07-10 14:16:44 +02:00
firmware.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
hypervisor.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
init.c init: Initialize noop_backing_dev_info early 2022-06-22 14:22:02 +02:00
isa.c bus: Make remove callback return void 2021-07-21 11:53:42 +02:00
Kconfig RISC-V Patches for the 5.12 Merge Window 2021-02-26 10:28:35 -08:00
Makefile devres: Enable trace events 2021-06-15 17:14:36 +02:00
map.c driver: base: Prefer unsigned int to bare use of unsigned 2021-07-21 17:30:09 +02:00
memory.c mm/hwpoison: avoid the impact of hwpoison_filter() return value on mce handler 2022-07-12 16:35:05 +02:00
module.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
node.c drivers/base: fix userspace break from using bin_attributes for cpumap and cpulist 2022-08-31 17:16:35 +02:00
pinctrl.c driver core: Remove redundant license text 2017-12-07 18:36:44 +01:00
platform-msi.c platform-msi: Add ABI to show msi_irqs of platform devices 2021-08-24 09:16:20 +02:00
platform.c platform: Provide a remove callback that returns no value 2023-05-11 23:00:24 +09:00
property.c device property: fix of node refcount leak in fwnode_graph_get_next_endpoint() 2023-02-01 08:27:14 +01:00
soc.c soc: fix comment for freeing soc_dev_attr 2020-12-09 19:46:31 +01:00
swnode.c software node: fix wrong node passed to find nargs_prop 2022-01-27 11:03:46 +01:00
syscore.c syscore: Use pm_pr_dbg() for syscore_{suspend,resume}() 2020-09-08 13:32:06 +02:00
topology.c drivers/base: fix userspace break from using bin_attributes for cpumap and cpulist 2022-08-31 17:16:35 +02:00
trace.c devres: Enable trace events 2021-06-15 17:14:36 +02:00
trace.h devres: Enable trace events 2021-06-15 17:14:36 +02:00
transport_class.c drivers: base: transport_class: fix resource leak when transport_add_device() fails 2023-03-10 09:39:39 +01:00