On 30/09/2016 08:54, Joonas Lahtinen wrote:
On to, 2016-09-29 at 16:35 +0100, Tvrtko Ursulin wrote:
+static int mmio_reg_cmp(const void *key, const void *elt)
+ {
<SNIP>
+ if (offset < i915_mmio_reg_offset(*reg))
+ return -1;
+ else if (offset > i915_mmio_reg_offset(*reg))
+ return 1;
+ else
+ return 0;
I was about to suggest return a - b; but then realized it might
overflow. After a bit of searching, that is done in
regcache_default_cmp though. So not sure if it's a bug in there or did
I miss something. This is safe way at least.
static bool is_gen8_shadowed(u32 offset)
{
- int i;
- for (i = 0; i < ARRAY_SIZE(gen8_shadowed_regs); i++)
- if (offset == gen8_shadowed_regs[i].reg)
- return true;
+ i915_reg_t *reg;
- return false;
+ reg = bsearch((void *)(unsigned long)offset,
(unsigned long) is not required, as we don't have sign bits to extend.
Gcc warns if I omit that.
+ (const void *)gen8_shadowed_regs,
+ ARRAY_SIZE(gen8_shadowed_regs),
+ sizeof(i915_reg_t),
+ mmio_reg_cmp);
+
+ return reg ? true : false;
As I previously learnt, no need to explicitly convert bool types
anymore, so this can just be return bsearch(...);
With the last two fixed,
I've done this one.
Reviewed-by: Joonas Lahtinen <joonas.lahti...@linux.intel.com>
Thanks!
Tvrtko
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