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authorKrzysztof Helt <krzysztof.h1@wp.pl>2010-01-04 22:23:34 +0100
committerJaroslav Kysela <perex@perex.cz>2010-01-08 09:27:23 +0100
commitedf12b4af6e1d2b7c42c75ff00e55a9c52c06d70 (patch)
tree909a9b4927da5e67ce685eb63ea7ce73e41e3618 /sound/isa
parent1cb4f624ea38361b6397966470f0a1bed5532483 (diff)
downloadlinux-edf12b4af6e1d2b7c42c75ff00e55a9c52c06d70.tar.gz
sbawe: fix memory detection part 2
The patch "sbawe: fix memory detection" fixed detection for memoryless SB32 cards but broke detection of memory above 512KB. This patch fixes the regression. The patch has been tested on the SB32 card (CT3670) with 0MB, 2MB and 8MB memory installed. Signed-off-by: Krzysztof Helt <krzysztof.h1@wp.pl> Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Diffstat (limited to 'sound/isa')
-rw-r--r--sound/isa/sb/emu8000.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/sound/isa/sb/emu8000.c b/sound/isa/sb/emu8000.c
index 751762f1c59a..0c40951b6523 100644
--- a/sound/isa/sb/emu8000.c
+++ b/sound/isa/sb/emu8000.c
@@ -377,12 +377,13 @@ init_arrays(struct snd_emu8000 *emu)
static void __devinit
size_dram(struct snd_emu8000 *emu)
{
- int i, size;
+ int i, size, detected_size;
if (emu->dram_checked)
return;
size = 0;
+ detected_size = 0;
/* write out a magic number */
snd_emu8000_dma_chan(emu, 0, EMU8000_RAM_WRITE);
@@ -393,6 +394,8 @@ size_dram(struct snd_emu8000 *emu)
while (size < EMU8000_MAX_DRAM) {
+ size += 512 * 1024; /* increment 512kbytes */
+
/* Write a unique data on the test address.
* if the address is out of range, the data is written on
* 0x200000(=EMU8000_DRAM_OFFSET). Then the id word is
@@ -414,7 +417,7 @@ size_dram(struct snd_emu8000 *emu)
if (EMU8000_SMLD_READ(emu) != UNIQUE_ID2)
break; /* no memory at this address */
- size += 512 * 1024; /* increment 512kbytes */
+ detected_size = size;
snd_emu8000_read_wait(emu);
@@ -442,9 +445,9 @@ size_dram(struct snd_emu8000 *emu)
snd_emu8000_dma_chan(emu, 1, EMU8000_RAM_CLOSE);
snd_printdd("EMU8000 [0x%lx]: %d Kb on-board memory detected\n",
- emu->port1, size/1024);
+ emu->port1, detected_size/1024);
- emu->mem_size = size;
+ emu->mem_size = detected_size;
emu->dram_checked = 1;
}