Messages in this thread Patch in this message |  | | From | Enric Balletbo i Serra <> | Subject | [PATCH v5 3/8] mfd: cros_ec: Don't try to grab log when suspended | Date | Thu, 5 Apr 2018 13:33:08 +0200 |
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From: Douglas Anderson <dianders@chromium.org>
We should stop our worker thread while we're suspended. If we don't then we'll get messages like:
cros-ec-spi spi5.0: spi transfer failed: -108 cros-ec-spi spi5.0: cs-deassert spi transfer failed: -108 cros-ec-ctl cros-ec-ctl.0.auto: EC communication failed
Signed-off-by: Douglas Anderson <dianders@chromium.org> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@collabora.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Acked-by: Lee Jones <lee.jones@linaro.org> ---
Changes in v5: None Changes in v4: - [3/8] Add Acked-by Lee Jones.
Changes in v3: - [3/8] Add Reviewed-by Andy Shevchenko.
Changes in v2: - [3/8] That patch is new in this series.
drivers/mfd/cros_ec_dev.c | 4 ++++ drivers/platform/chrome/cros_ec_debugfs.c | 20 ++++++++++++++++++++ include/linux/mfd/cros_ec.h | 2 ++ 3 files changed, 26 insertions(+)
diff --git a/drivers/mfd/cros_ec_dev.c b/drivers/mfd/cros_ec_dev.c index e4fafdd96e5e..f98e5beffca6 100644 --- a/drivers/mfd/cros_ec_dev.c +++ b/drivers/mfd/cros_ec_dev.c @@ -471,6 +471,8 @@ static __maybe_unused int ec_device_suspend(struct device *dev) { struct cros_ec_dev *ec = dev_get_drvdata(dev); + cros_ec_debugfs_suspend(ec); + lb_suspend(ec); return 0; @@ -480,6 +482,8 @@ static __maybe_unused int ec_device_resume(struct device *dev) { struct cros_ec_dev *ec = dev_get_drvdata(dev); + cros_ec_debugfs_resume(ec); + lb_resume(ec); return 0; diff --git a/drivers/platform/chrome/cros_ec_debugfs.c b/drivers/platform/chrome/cros_ec_debugfs.c index 0e88e18362c1..0328856ec3a2 100644 --- a/drivers/platform/chrome/cros_ec_debugfs.c +++ b/drivers/platform/chrome/cros_ec_debugfs.c @@ -398,3 +398,23 @@ void cros_ec_debugfs_remove(struct cros_ec_dev *ec) cros_ec_cleanup_console_log(ec->debug_info); } EXPORT_SYMBOL(cros_ec_debugfs_remove); + +void cros_ec_debugfs_suspend(struct cros_ec_dev *ec) +{ + /* + * cros_ec_debugfs_init() failures are non-fatal; it's also possible + * that we initted things but decided that console log wasn't supported. + * We'll use the same set of checks that cros_ec_debugfs_remove() + + * cros_ec_cleanup_console_log() end up using to handle those cases. + */ + if (ec->debug_info && ec->debug_info->log_buffer.buf) + cancel_delayed_work_sync(&ec->debug_info->log_poll_work); +} +EXPORT_SYMBOL(cros_ec_debugfs_suspend); + +void cros_ec_debugfs_resume(struct cros_ec_dev *ec) +{ + if (ec->debug_info && ec->debug_info->log_buffer.buf) + schedule_delayed_work(&ec->debug_info->log_poll_work, 0); +} +EXPORT_SYMBOL(cros_ec_debugfs_resume); diff --git a/include/linux/mfd/cros_ec.h b/include/linux/mfd/cros_ec.h index c61535979b8f..804b3ddbf819 100644 --- a/include/linux/mfd/cros_ec.h +++ b/include/linux/mfd/cros_ec.h @@ -325,6 +325,8 @@ extern struct attribute_group cros_ec_vbc_attr_group; /* debugfs stuff */ int cros_ec_debugfs_init(struct cros_ec_dev *ec); void cros_ec_debugfs_remove(struct cros_ec_dev *ec); +void cros_ec_debugfs_suspend(struct cros_ec_dev *ec); +void cros_ec_debugfs_resume(struct cros_ec_dev *ec); /* ACPI GPE handler */ #ifdef CONFIG_ACPI -- 2.16.3
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