diff options
| -rw-r--r-- | lib/igt_pm.c | 77 |
1 files changed, 53 insertions, 24 deletions
diff --git a/lib/igt_pm.c b/lib/igt_pm.c index 8ac13226..6f3b0a2d 100644 --- a/lib/igt_pm.c +++ b/lib/igt_pm.c @@ -66,33 +66,47 @@ enum { static char __igt_pm_audio_runtime_power_save[64]; static char __igt_pm_audio_runtime_control[64]; -static void __igt_pm_audio_runtime_exit_handler(int sig) +static int __igt_pm_audio_restore_runtime_pm(void) { int fd; - igt_debug("Restoring audio power management to '%s' and '%s'\n", - __igt_pm_audio_runtime_power_save, - __igt_pm_audio_runtime_control); + if (!__igt_pm_audio_runtime_power_save[0]) + return 0; fd = open("/sys/module/snd_hda_intel/parameters/power_save", O_WRONLY); if (fd < 0) - return; + return errno; + if (write(fd, __igt_pm_audio_runtime_power_save, strlen(__igt_pm_audio_runtime_power_save)) != - strlen(__igt_pm_audio_runtime_power_save)) - igt_warn("Failed to restore audio power_save to '%s'\n", - __igt_pm_audio_runtime_power_save); + strlen(__igt_pm_audio_runtime_power_save)) { + close(fd); + return errno; + } + close(fd); fd = open("/sys/bus/pci/devices/0000:00:03.0/power/control", O_WRONLY); if (fd < 0) - return; + return errno; + if (write(fd, __igt_pm_audio_runtime_control, strlen(__igt_pm_audio_runtime_control)) != - strlen(__igt_pm_audio_runtime_control)) - igt_warn("Failed to restore audio control to '%s'\n", - __igt_pm_audio_runtime_control); + strlen(__igt_pm_audio_runtime_control)) { + close(fd); + return errno; + } + close(fd); + + __igt_pm_audio_runtime_power_save[0] = 0; + + return 0; +} + +static void __igt_pm_audio_runtime_exit_handler(int sig) +{ + __igt_pm_audio_restore_runtime_pm(); } static void strchomp(char *str) @@ -297,33 +311,48 @@ int pm_status_fd = -1; static char __igt_pm_runtime_autosuspend[64]; static char __igt_pm_runtime_control[64]; -static void __igt_pm_runtime_exit_handler(int sig) +static int __igt_restore_runtime_pm(void) { int fd; - igt_debug("Restoring runtime management to '%s' and '%s'\n", - __igt_pm_runtime_autosuspend, - __igt_pm_runtime_control); + if (pm_status_fd < 0) + return 0; fd = open(POWER_DIR "/autosuspend_delay_ms", O_WRONLY); if (fd < 0) - return; + return errno; + if (write(fd, __igt_pm_runtime_autosuspend, strlen(__igt_pm_runtime_autosuspend)) != - strlen(__igt_pm_runtime_autosuspend)) - igt_warn("Failed to restore runtime pm autosuspend delay to '%s'\n", - __igt_pm_runtime_autosuspend); + strlen(__igt_pm_runtime_autosuspend)) { + close(fd); + return errno; + } + close(fd); fd = open(POWER_DIR "/control", O_WRONLY); if (fd < 0) - return; + return errno; + if (write(fd, __igt_pm_runtime_control, strlen(__igt_pm_runtime_control)) != - strlen(__igt_pm_runtime_control)) - igt_warn("Failed to restore runtime pm control to '%s'\n", - __igt_pm_runtime_control); + strlen(__igt_pm_runtime_control)) { + close(fd); + return errno; + } + close(fd); + + close(pm_status_fd); + pm_status_fd = -1; + + return 0; +} + +static void __igt_pm_runtime_exit_handler(int sig) +{ + __igt_restore_runtime_pm(); } /** |