linux-stable.git/drivers/interconnect/internal.h, branch linux-5.4.y Linux kernel stable tree interconnect: Add helpers for enabling/disabling a path 2023-08-30T14:27:13+00:00 Georgi Djakov georgi.djakov@linaro.org 2020-05-10T15:30:37+00:00 5335bb0cefded54dc61d5b450d5168cf38971b50 [ Upstream commit 7d374b20908338c9fbb03ea8022a11f3b3e0e55f ] There is a repeated pattern in multiple drivers where they want to switch the bandwidth between zero and some other value. This is happening often in the suspend/resume callbacks. Let's add helper functions to enable and disable the path, so that callers don't have to take care of remembering the bandwidth values and handle this in the framework instead. With this patch the users can call icc_disable() and icc_enable() to lower their bandwidth request to zero and then restore it back to it's previous value. Suggested-by: Evan Green <evgreen@chromium.org> Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Reviewed-by: Matthias Kaehlcke <mka@chromium.org> Link: https://lore.kernel.org/r/20200507120846.8354-1-georgi.djakov@linaro.org Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Stable-dep-of: d2d69354226d ("USB: dwc3: qcom: fix NULL-deref on suspend") Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit 7d374b20908338c9fbb03ea8022a11f3b3e0e55f ]

There is a repeated pattern in multiple drivers where they want to switch
the bandwidth between zero and some other value. This is happening often
in the suspend/resume callbacks. Let's add helper functions to enable and
disable the path, so that callers don't have to take care of remembering
the bandwidth values and handle this in the framework instead.

With this patch the users can call icc_disable() and icc_enable() to lower
their bandwidth request to zero and then restore it back to it's previous
value.

Suggested-by: Evan Green <evgreen@chromium.org>
Suggested-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Link: https://lore.kernel.org/r/20200507120846.8354-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Stable-dep-of: d2d69354226d ("USB: dwc3: qcom: fix NULL-deref on suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>
interconnect: Move internal structs into a separate file 2023-08-30T14:27:13+00:00 Georgi Djakov georgi.djakov@linaro.org 2019-11-28T14:18:16+00:00 e062fb97941065d286a4a16517e10d118a4a78c2 [ Upstream commit dd018a9cf9108f9c7d924f6fe09aed745e78a67e ] Move the interconnect framework internal structs into a separate file, so that it can be included and used by ftrace code. This will allow us to expose some more useful information in the traces. Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Stable-dep-of: d2d69354226d ("USB: dwc3: qcom: fix NULL-deref on suspend") Signed-off-by: Sasha Levin <sashal@kernel.org> 
[ Upstream commit dd018a9cf9108f9c7d924f6fe09aed745e78a67e ]

Move the interconnect framework internal structs into a separate file,
so that it can be included and used by ftrace code. This will allow us
to expose some more useful information in the traces.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Stable-dep-of: d2d69354226d ("USB: dwc3: qcom: fix NULL-deref on suspend")
Signed-off-by: Sasha Levin <sashal@kernel.org>