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Groups > linux.kernel > #1603446
| From | Leo Yan <leo.yan@linaro.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [v3 3/5] coresight: add support for debug module |
| Date | 2017-03-17 17:40 +0100 |
| Message-ID | <tm350-Ro-7@gated-at.bofh.it> (permalink) |
| References | (4 earlier) <tkBub-3kO-37@gated-at.bofh.it> <tlkhz-1Qf-1@gated-at.bofh.it> <tlo1Q-4vc-17@gated-at.bofh.it> <tlXCi-535-5@gated-at.bofh.it> <tm2sh-kO-11@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Mar 17, 2017 at 09:50:07AM -0600, Mathieu Poirier wrote:
[...]
> If we don't check for "nohlt" some platform may freeze, others may work. If we
> mandate that "nohlt" be present on the kernel cmd line it works in all cases.
> As such mandating that "nohlt" be present is a better way to go.
Sure, so I will add below checking code in the probe function, please
let me know if you have alter better way to implement this:
+ if (IS_ENABLED(CONFIG_CPU_IDLE) &&
+ !strstr(boot_command_line, "nohlt")) {
+ dev_err(dev, "May not be accessible in CPU power domain.\n");
+ return -EPERM;
+ }
Thanks,
Leo Yan
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Re: [v3 3/5] coresight: add support for debug module Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2017-03-15 17:50 +0100
Re: [v3 3/5] coresight: add support for debug module Mathieu Poirier <mathieu.poirier@linaro.org> - 2017-03-15 21:50 +0100
Re: [v3 3/5] coresight: add support for debug module Leo Yan <leo.yan@linaro.org> - 2017-03-17 11:50 +0100
Re: [v3 3/5] coresight: add support for debug module Mathieu Poirier <mathieu.poirier@linaro.org> - 2017-03-17 17:00 +0100
Re: [v3 3/5] coresight: add support for debug module Leo Yan <leo.yan@linaro.org> - 2017-03-17 17:40 +0100
Re: [v3 3/5] coresight: add support for debug module Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2017-03-17 17:50 +0100
Re: [v3 3/5] coresight: add support for debug module Leo Yan <leo.yan@linaro.org> - 2017-03-20 13:40 +0100
Re: [v3 3/5] coresight: add support for debug module Mathieu Poirier <mathieu.poirier@linaro.org> - 2017-03-20 17:50 +0100
Re: [v3 3/5] coresight: add support for debug module Leo Yan <leo.yan@linaro.org> - 2017-03-21 04:10 +0100
Re: [v3 3/5] coresight: add support for debug module Suzuki K Poulose <Suzuki.Poulose@arm.com> - 2017-03-21 11:20 +0100
Re: [v3 3/5] coresight: add support for debug module Leo Yan <leo.yan@linaro.org> - 2017-03-21 12:50 +0100
Re: [v3 3/5] coresight: add support for debug module Mathieu Poirier <mathieu.poirier@linaro.org> - 2017-03-21 16:30 +0100
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