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hw/omap_dss.c: Fix !-vs-~ bug in handling DISPC_CONTROL 

Fix a bug revealed by a coverity scan (see bug 887883) which meant
that we would never print the warning about unpredictable behaviour
if a nonexistent overlay is enabled.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Peter Maydell 2011-11-09 17:20:06 +00:00 committed by Anthony Liguori
parent 66e3dd9282
commit 95117be5a3
1 changed files with 5 additions and 4 deletions
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9
hw/omap_dss.c
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@ -389,10 +389,11 @@ static void omap_disc_write(void *opaque, target_phys_addr_t addr,
s->dig.enable = (value >> 1) & 1; s->dig.enable = (value >> 1) & 1;
s->lcd.enable = (value >> 0) & 1; s->lcd.enable = (value >> 0) & 1;
if (value & (1 << 12)) /* OVERLAY_OPTIMIZATION */ if (value & (1 << 12)) /* OVERLAY_OPTIMIZATION */
if (~((s->dispc.l[1].attr | s->dispc.l[2].attr) & 1)) if (!((s->dispc.l[1].attr | s->dispc.l[2].attr) & 1)) {
fprintf(stderr, "%s: Overlay Optimization when no overlay " fprintf(stderr, "%s: Overlay Optimization when no overlay "
"region effectively exists leads to " "region effectively exists leads to "
"unpredictable behaviour!\n", __FUNCTION__); "unpredictable behaviour!\n", __func__);
}
if (value & (1 << 6)) { /* GODIGITAL */ if (value & (1 << 6)) { /* GODIGITAL */
/* XXX: Shadowed fields are: /* XXX: Shadowed fields are:
* s->dispc.config * s->dispc.config