Re: [PATCH] wl12xx: use a bitmask instead of list of booleans in scanned_ch
From: Luciano Coelho <hidden>
Date: 2011-03-22 07:46:34
On Tue, 2011-03-22 at 09:40 +0200, Eliad Peller wrote:
On Mon, Mar 21, 2011 at 11:19 PM, Luciano Coelho [off-list ref] wrote:quoted
We were using an array of booleans to mark the channels we had already scanned. This was causing a sparse error, because bool is not a type with defined size. To fix this, use bitmasks instead, which is much cleaner anyway. Thanks Johannes Berg for the idea. Signed-off-by: Luciano Coelho <redacted> ---[...]quoted
+ /* make sure all our channels fit in the scanned_ch bitmask */ + BUG_ON(ARRAY_SIZE(wl1271_channels) + ARRAY_SIZE(wl1271_channels_5ghz) > + WL1271_MAX_CHANNELS);maybe use BUILD_BUG_ON here?
Yeah, I had actually done that at first. But then the compilation error was so cryptic that I decided to add a BUG_ON instead. But now I realize that the BUG_ON is just as cryptic, so I can change it back to BUILD_BUG_ON. In either case, the developer will know soon enough that there is a bug. :) I'll change it to BUILD_BUG_ON before applying. Thanks! -- Cheers, Luca.