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path: root/drivers/hwtracing/stm/heartbeat.c
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2021-01-21stm class: Fix module init return on allocation failureWang Hui
In stm_heartbeat_init(): return value gets reset after the first iteration by stm_source_register_device(), so allocation failures after that will, after a clean up, return success. Fix that. Fixes: 119291853038 ("stm class: Add heartbeat stm source device") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wang Hui <john.wanghui@huawei.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Link: https://lore.kernel.org/r/20210115195917.3184-2-alexander.shishkin@linux.intel.com Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-10-11stm class: heartbeat: Fix whitespaceAlexander Shishkin
Fix whitespace in the code for better readability, no functional changes. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2018-03-28stm class: Add SPDX GPL-2.0 header to replace GPLv2 boilerplateAlexander Shishkin
This adds SPDX GPL-2.0 header to to stm core files and removes the GPLv2 boilerplate text. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
2016-04-08stm class: stm_heartbeat: Make nr_devs parameter read-onlyAlexander Shishkin
Changing nr_devs after the module has been loaded doesn't actually change anything, so just make it read-only. Reported-by: Alan Cox <alan.cox@intel.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Reviewed-by: Laurent Fert <laurent.fert@intel.com>
2016-02-20stm class: Add heartbeat stm source deviceAlexander Shishkin
Heartbeat stm source may have multiple instances (for connecting to different stm devices). Each instance will send a periodic test message over its stm device when it is linked. This can be used for testing stm class framework, stm device drivers or as a heartbeat over the stm link. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>