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ARM: pxa: fix mfpr_sync to read from valid offset

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Since mfpr_mmio_base[0] is not always valid on later SoCs,
fixed mpfr_sync() to read back from valid mfp offset always.

Signed-off-by: Yu Tang <ytang5@marvell.com>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
This commit is contained in:
Yu Tang 2011-01-19 22:18:54 +08:00 committed by Eric Miao
parent 100b33c8bd
commit 0c7fbbe1a1
1 changed files with 6 additions and 2 deletions
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8
arch/arm/plat-pxa/mfp.c
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@ -139,10 +139,11 @@ static const unsigned long mfpr_edge[] = {
#define mfp_configured(p) ((p)->config != -1)
/*
* perform a read-back of any MFPR register to make sure the
* perform a read-back of any valid MFPR register to make sure the
* previous writings are finished
*/
#define mfpr_sync() (void)__raw_readl(mfpr_mmio_base + 0)
static unsigned long mfpr_off_readback;
#define mfpr_sync() (void)__raw_readl(mfpr_mmio_base + mfpr_off_readback)
static inline void __mfp_config_run(struct mfp_pin *p)
{
@ -248,6 +249,9 @@ void __init mfp_init_addr(struct mfp_addr_map *map)
spin_lock_irqsave(&mfp_spin_lock, flags);
/* mfp offset for readback */
mfpr_off_readback = map[0].offset;
for (p = map; p->start != MFP_PIN_INVALID; p++) {
offset = p->offset;
i = p->start;