Commit 0c7fbbe1 authored by Yu Tang's avatar Yu Tang Committed by Eric Miao
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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: default avatarYu Tang <ytang5@marvell.com>
Signed-off-by: default avatarEric Miao <eric.y.miao@gmail.com>
parent 100b33c8

arch/arm/plat-pxa/mfp.c

+6 −2
Original line number Diff line number Diff line
@@ -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;