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| author | Yu Tang <ytang5@marvell.com> | 2011-01-19 17:18:54 +0300 |
|---|---|---|
| committer | Eric Miao <eric.y.miao@gmail.com> | 2011-02-09 18:05:03 +0300 |
| commit | 0c7fbbe1a15e419eb2f1a687444330c4016fdb8f (patch) | |
| tree | 741353373292f487ac2aa43800970b4c8ddec976 | |
| parent | 100b33c8bd8a3235fd0b7948338d6cbb3db3c63d (diff) | |
| download | linux-0c7fbbe1a15e419eb2f1a687444330c4016fdb8f.tar.xz | |
ARM: pxa: fix mfpr_sync to read from valid offset
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>
| -rw-r--r-- | arch/arm/plat-pxa/mfp.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/arm/plat-pxa/mfp.c b/arch/arm/plat-pxa/mfp.c index b77e018d36c1..a9aa5ad3f4eb 100644 --- a/arch/arm/plat-pxa/mfp.c +++ b/arch/arm/plat-pxa/mfp.c @@ -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; |