From: luke lin <luke.lin1105@gmail.com>
To: linux-acpi@vger.kernel.org
Cc: Luke lin <luke1105@gmail.com>
Subject: Question about ACPI Video
Date: Mon, 25 Jan 2010 17:45:03 +0800 [thread overview]
Message-ID: <d292941c1001250145o43dc2785p6cdc7d2ff6d47e76@mail.gmail.com> (raw)
Hi all,
I read the drivers/acpi/video.c:
895 result = acpi_video_device_lcd_set_level(device, max_level);
896 if (result)
897 goto out_free_levels;
898
899 result = acpi_video_device_lcd_get_level_current(device, &level);
900 if (result)
901 goto out_free_levels;
902
903 br->flags._BQC_use_index = (level == max_level ? 0 : 1);
904
905 if (!br->flags._BQC_use_index) {
912 for (i = 2; i < br->count; i++)
913 if (level_old == br->levels[i])
914 level = level_old;
915 goto set_level;
916 }
why after level == max_level, it will still need set_level again?
is this a bug, or it is necessary.
thx
luke
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next reply other threads:[~2010-01-25 9:45 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-25 9:45 luke lin [this message]
2010-01-26 0:58 ` Question about ACPI Video Zhang Rui
2010-01-26 3:24 ` Len Brown
2010-01-27 18:02 ` Edward Shao
2010-01-28 7:04 ` Zhang Rui
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