[PATCH 2/2] ARM: S3C2443: Workaround for 2443 EXTINT error

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S3C2443 CPU has a problem with incorrect reading from EXTINTn
registers. So s3c_irqext_type function wrongly modifies them.
So add special check to s3c_irqext_type, to handle this case.

Signed-off-by: Alexander Varnin <fenixk19@xxxxxxx>
---
 arch/arm/plat-s3c24xx/irq.c |   15 +++++++++++++++
 1 files changed, 15 insertions(+), 0 deletions(-)

diff --git a/arch/arm/plat-s3c24xx/irq.c b/arch/arm/plat-s3c24xx/irq.c
index fe57bbb..bb36fc9 100644
--- a/arch/arm/plat-s3c24xx/irq.c
+++ b/arch/arm/plat-s3c24xx/irq.c
@@ -219,6 +219,21 @@ s3c_irqext_type(struct irq_data *data, unsigned int type)
 	}
 
 	value = __raw_readl(extint_reg);
+
+	if( (samsung_cpu_id & 0xfffff) == 0x43001) //Hack for 2443 error workaround
+	{
+	    int i;
+	    int fixed = 0;
+	    if(extint_reg == S3C24XX_EXTINT1 || extint_reg == S3C24XX_EXTINT2)
+		for(i=0; i<7;i++)
+		    fixed |= (((value >> ((7-i)*4+1)) & 7) | ((value >> ((7-i)*4-3)) & 8)) << i*4;
+	    else
+		for(i=0; i<7;i++)
+		    fixed |= ( (value >> (7-i)*4) & 0xf )  << i*4;
+	    fixed |= (((value>>1) & 7) | ((value<<3) & 8)) << 27;
+	    value = fixed;
+	}
+
 	value = (value & ~(7 << extint_offset)) | (newvalue << extint_offset);
 	__raw_writel(value, extint_reg);
 
-- 
1.7.2.5

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