thinkpad_acpi: Don't yell on unsupported brightness interfaces

The thinkpad_acpi driver currently emits error messages on unsupported
brightness interfaces, giving the impression that someone will implement
those. However, this error is spit out on nearly every thinkpad in
production since 2 years now. Furthermore, the backlight interfaces on
those devices are supported by the i915 driver just fine.

Downgrade the error message to a normal pr_info() and stop telling people
to report it to IBM.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 131dd74641833e69e144f6a22d1d4021d09ee1c9..0bed4733c4f04925831a174b6b58e674ca2fe56c 100644 (file)
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6459,8 +6459,7 @@ static void __init tpacpi_detect_brightness_capabilities(void)
                pr_info("detected a 8-level brightness capable ThinkPad\n");
                break;
        default:
-               pr_err("Unsupported brightness interface, "
-                      "please contact %s\n", TPACPI_MAIL);
+               pr_info("Unsupported brightness interface\n");
                tp_features.bright_unkfw = 1;
                bright_maxlvl = b - 1;
        }