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 <h...@hmh.eng.br>
---
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
------------------------------------------------------------------------------
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