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Christian Lamparter 3fce12568a kernel: modules: fix kmod-regmap redux ... Jonas Gorski commented on the previous patch: |This is actually the wrong fix and papers over an issue in one of our |local patches. | |We intentionally allow regmap to be built as a module, see | |/target/linux/generic/hack-4.14/259-regmap_dynamic.patch |[...] |[The regulator code] optionally supports regmap thanks to the stubs |provided if regmap is disabled - which breaks if you compile regmap |as a module. In order to mitigate this issue, this patch reverts the previous patch and replaces the existing IS_ENABLED(CONFIG_REGMAP) with IS_REACHABLE(CONFIG_REGMAP). This solves this particular issue as the regulator code will now automatically fallback to the regmap stubs in case the kmod-regmap module is enabled, but nothing else sets CONFIG_REGMAP=y. Note: There's still a potential issue that this patch doesn't solve: If someone ever wants to make a OpenWrt kernel package for a regulator module that requires the REGMAP feature for a target that doesn't set CONFIG_REGMAP=y but has CONFIG_REGULATOR=y, the resulting kmod-regulator-xyz package will not work on the target. Luckily, there aren't any in-tree OpenWrt kernel module packages for regulators at the moment. On the bright side: regmap is a critical part nowadays and all new and upcoming architectures require it by default. This will likely only ever be a problem for legacy targets and devices that cannot afford to enable REGMAP. Cc: Jonas Gorski <jonas.gorski@gmail.com> Cc: John Crispin <john@phrozen.org> Fixes: d00913d121 ("kernel: modules: fix kmod-regmap") Signed-off-by: Christian Lamparter <chunkeey@gmail.com>		6 years ago
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backport-4.9	kernel: bump 4.9 to 4.9.117	6 years ago
backport-4.14	kernel: bump 4.14 to 4.14.60	6 years ago
files	…
hack-4.9	kernel: bump 4.9 to 4.9.117	6 years ago
hack-4.14	kernel: modules: fix kmod-regmap redux	6 years ago
image	…
other-files	…
pending-3.18	…
pending-4.9	kernel: bump 4.9 to 4.9.117	6 years ago
pending-4.14	kernel: bump 4.14 to 4.14.60	6 years ago
PATCHES	…
config-3.18	config: extend small_flash feature	6 years ago
config-4.9	config: extend small_flash feature	6 years ago
config-4.14	config: extend small_flash feature	6 years ago