platform/x86: dell-wmi: Add a comment explaining the 0xb2 magic number

The hotkey table is 0xb2, add a comment for clarity.

Suggested-by: Darren Hart <dvhart@infradead.org>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>

diff --git a/drivers/platform/x86/dell-wmi.c b/drivers/platform/x86/dell-wmi.c
index 8a64c7967753c472e66b7f5de6344a81c3545a37..24467b1f0f21ed38a9cdc0d6f0c74d986ff77680 100644 (file)
--- a/drivers/platform/x86/dell-wmi.c
+++ b/drivers/platform/x86/dell-wmi.c
@@ -449,6 +449,7 @@ static void __init handle_dmi_entry(const struct dmi_header *dm,
        if (results->err || results->keymap)
                return;         /* We already found the hotkey table. */
 
+       /* The Dell hotkey table is type 0xB2.  Scan until we find it. */
        if (dm->type != 0xb2)
                return;