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| author | Tero Kristo <t-kristo@ti.com> | 2015-02-09 16:17:38 +0200 |
|---|---|---|
| committer | Tero Kristo <t-kristo@ti.com> | 2015-03-31 21:26:55 +0300 |
| commit | 23d240d661f42214bd372c0e5b21afaf71b9329c (patch) | |
| tree | 8cc47acbe8552433cd93c9dc0e7ff5e19abc08bd | |
| parent | ae0f6798474053eb76863fa9b3befd9deea58ba6 (diff) | |
ARM: OMAP2+: id: cache omap_type value
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>
| -rw-r--r-- | arch/arm/mach-omap2/id.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c index 2a2f4d56e4c8..f8121dbc9d48 100644 --- a/arch/arm/mach-omap2/id.c +++ b/arch/arm/mach-omap2/id.c @@ -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); |