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author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-08-01 09:08:55 +0400 |
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committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2012-08-22 09:29:52 +0400 |
commit | c0bb1f975ca06b17d595937c5e91578b36047039 (patch) | |
tree | f21fdf30c33fcd5a9d0f87cc5115af9f4f471382 | |
parent | 80c99bcd28617bd534b6f9489857235ee613c797 (diff) | |
download | linux-c0bb1f975ca06b17d595937c5e91578b36047039.tar.xz |
Input: get rid of MATCH_BIT() macro
MATCH_BIT() is ugly and stupid, we have much nicer bitmap_subset() which
does the same and does not hide control flow.
Reported-by: Baodong Chen <chenbdchenbd@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
-rw-r--r-- | drivers/input/input.c | 43 |
1 files changed, 26 insertions, 17 deletions
diff --git a/drivers/input/input.c b/drivers/input/input.c index 8921c6180c51..768e46b05ef0 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -844,18 +844,10 @@ int input_set_keycode(struct input_dev *dev, } EXPORT_SYMBOL(input_set_keycode); -#define MATCH_BIT(bit, max) \ - for (i = 0; i < BITS_TO_LONGS(max); i++) \ - if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \ - break; \ - if (i != BITS_TO_LONGS(max)) \ - continue; - static const struct input_device_id *input_match_device(struct input_handler *handler, struct input_dev *dev) { const struct input_device_id *id; - int i; for (id = handler->id_table; id->flags || id->driver_info; id++) { @@ -875,15 +867,32 @@ static const struct input_device_id *input_match_device(struct input_handler *ha if (id->version != dev->id.version) continue; - MATCH_BIT(evbit, EV_MAX); - MATCH_BIT(keybit, KEY_MAX); - MATCH_BIT(relbit, REL_MAX); - MATCH_BIT(absbit, ABS_MAX); - MATCH_BIT(mscbit, MSC_MAX); - MATCH_BIT(ledbit, LED_MAX); - MATCH_BIT(sndbit, SND_MAX); - MATCH_BIT(ffbit, FF_MAX); - MATCH_BIT(swbit, SW_MAX); + if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX)) + continue; + + if (!bitmap_subset(id->keybit, dev->keybit, KEY_MAX)) + continue; + + if (!bitmap_subset(id->relbit, dev->relbit, REL_MAX)) + continue; + + if (!bitmap_subset(id->absbit, dev->absbit, ABS_MAX)) + continue; + + if (!bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX)) + continue; + + if (!bitmap_subset(id->ledbit, dev->ledbit, LED_MAX)) + continue; + + if (!bitmap_subset(id->sndbit, dev->sndbit, SND_MAX)) + continue; + + if (!bitmap_subset(id->ffbit, dev->ffbit, FF_MAX)) + continue; + + if (!bitmap_subset(id->swbit, dev->swbit, SW_MAX)) + continue; if (!handler->match || handler->match(handler, dev)) return id; |