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Document this, it is no fun to try to second guess why this sort of stuff is in place years after it was added... Signed-off-by: Henrique de Moraes Holschuh <hmh@xxxxxxxxxx> --- drivers/platform/x86/thinkpad_acpi.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c index b3bfce9..4bdb137 100644 --- a/drivers/platform/x86/thinkpad_acpi.c +++ b/drivers/platform/x86/thinkpad_acpi.c @@ -6397,6 +6397,10 @@ static int __init brightness_init(struct ibm_init_struct *iibm) "or not on your ThinkPad\n", TPACPI_MAIL); } + /* Added by mistake in early 2007. Probably useless, but it could + * be working around some unknown firmware problem where the value + * read at startup doesn't match the real hardware state... so leave + * it in place just in case */ backlight_update_status(ibm_backlight_device); vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, -- 1.7.1 ------------------------------------------------------------------------------ _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel
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