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-rw-r--r--sound/isa/sb/emu8000.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/sound/isa/sb/emu8000.c b/sound/isa/sb/emu8000.c
index 71887874679..2aae6a0efbc 100644
--- a/sound/isa/sb/emu8000.c
+++ b/sound/isa/sb/emu8000.c
@@ -417,9 +417,6 @@ size_dram(struct snd_emu8000 *emu)
EMU8000_SMLD_READ(emu); /* discard stale data */
if (EMU8000_SMLD_READ(emu) != UNIQUE_ID2)
break; /* no memory at this address */
-
- detected_size = size;
-
snd_emu8000_read_wait(emu);
/*
@@ -432,6 +429,18 @@ size_dram(struct snd_emu8000 *emu)
if (EMU8000_SMLD_READ(emu) != UNIQUE_ID1)
break; /* we must have wrapped around */
snd_emu8000_read_wait(emu);
+
+ /* Otherwise, it's valid memory. */
+ detected_size = size + 512 * 1024;
+ }
+
+ /* Distinguish 512 KiB from 0. */
+ if (detected_size == 0) {
+ snd_emu8000_read_wait(emu);
+ EMU8000_SMALR_WRITE(emu, EMU8000_DRAM_OFFSET);
+ EMU8000_SMLD_READ(emu); /* discard stale data */
+ if (EMU8000_SMLD_READ(emu) == UNIQUE_ID1)
+ detected_size = 512 * 1024;
}
/* wait until FULL bit in SMAxW register is false */