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The device power management API has the following asymmetry: * dpm_suspend_start() does not clean up on failure (it requires a call to dpm_resume_end()) * dpm_suspend_end() does clean up on failure (it does not require a call to dpm_resume_start()) The asymmetry was introduced by commitd8f3de0d24("Suspend-related patches for 2.6.27") in June 2008: It removed a call to device_resume() from device_suspend() (which was later renamed to dpm_suspend_start()). When Xen began using the device power management API in May 2008 with commit0e91398f2a("xen: implement save/restore"), the asymmetry did not yet exist. But since it was introduced, a call to dpm_resume_end() is missing in the error path of dpm_suspend_start(). Fix it. Fixes:d8f3de0d24("Suspend-related patches for 2.6.27") Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: stable@vger.kernel.org # v2.6.27 Reviewed-by: "Rafael J. Wysocki (Intel)" <rafael@kernel.org> Signed-off-by: Juergen Gross <jgross@suse.com> Message-ID: <22453676d1ddcebbe81641bb68ddf587fee7e21e.1756990799.git.lukas@wunner.de>