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sh: Read from CCN_PVR instead of ROM for delay.

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Reading from the ROM is not a good idea as it could disturb some
flash operation that it is in progress.

Signed-off-by: Stuart Menefy <stuart.menefy@st.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Stuart Menefy 2009-08-24 17:13:52 +09:00 committed by Paul Mundt
parent fea966f756
commit 7d9c035150
1 changed files with 5 additions and 1 deletions
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6
arch/sh/include/asm/io.h
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@ -92,8 +92,12 @@
static inline void ctrl_delay(void)
{
#ifdef P2SEG
#ifdef CONFIG_CPU_SH4
__raw_readw(CCN_PVR);
#elif defined(P2SEG)
__raw_readw(P2SEG);
#else
#error "Need a dummy address for delay"
#endif
}