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always use the copy loop with 32bit accesses

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64bit access produces errors on some platforms
This commit is contained in:
rjkm 2021-01-13 14:56:57 +01:00
parent e413baeab9
commit bfa8cec850
1 changed files with 6 additions and 1 deletions
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5
ddbridge/ddbridge-io.c
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@ -177,7 +177,12 @@ void ddbcpyto(struct ddb *dev, u32 adr, void *src, long count)
void ddbcpyfrom(struct ddb *dev, void *dst, u32 adr, long count)
{
return gtlcpyfrom(dev, dst, adr, count);
/* The possible 64 bit read in memcpy_fromio produces errors
on some platforms, i.e. arm64 rpi4
if (unlikely(adr & 0xf0000000))
return gtlcpyfrom(dev, dst, adr, count);
return memcpy_fromio(dst, dev->regs + adr, count);
*/
}