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ARM: OMAP2+: id: cache omap_type value

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There is no need to read the register with every invocation of the function,
as the value is constant. Thus, cache the value in a static variable.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
This commit is contained in:
Tero Kristo 2015-02-09 16:17:38 +02:00
parent ae0f679847
commit 23d240d661
1 changed files with 4 additions and 1 deletions
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5
arch/arm/mach-omap2/id.c
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@ -52,7 +52,10 @@ EXPORT_SYMBOL(omap_rev);
int omap_type(void)
{
u32 val = 0;
static u32 val = OMAP2_DEVICETYPE_MASK;
if (val < OMAP2_DEVICETYPE_MASK)
return val;
if (cpu_is_omap24xx()) {
val = omap_ctrl_readl(OMAP24XX_CONTROL_STATUS);