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| author | Will Schmidt <will_schmidt@vnet.ibm.com> | 2006-05-30 20:38:40 +0200 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-06-09 13:21:02 +0200 |
| commit | 03ac829b0046d5769eef3dd841cec33a211db96e (patch) | |
| tree | fbabaac94b4848f1906c49d7cbdbe9dbcd066372 /arch/powerpc | |
| parent | [PATCH] powerpc: Fix buglet with MMU hash management (diff) | |
| download | linux-03ac829b0046d5769eef3dd841cec33a211db96e.tar.xz linux-03ac829b0046d5769eef3dd841cec33a211db96e.zip | |
[PATCH] powerpc: fix of_parse_dma_window
My js20 appears to lack the ibm,#dma- properties, and boot fails with a
"Kernel panic - not syncing: iommu_init_table: Can't allocate 0 bytes"
message.
This adds a fallback to the "#address-cells" property in case the
"#ibm,dma-address-cells" property is missing. Tested on js20 and
power5 lpar.
Unless there is a more elegant solution... :-)
Signed-off-by: Will Schmidt <willschm@us.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/prom_parse.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/prom_parse.c b/arch/powerpc/kernel/prom_parse.c index 23bb060330ef..45df420383cc 100644 --- a/arch/powerpc/kernel/prom_parse.c +++ b/arch/powerpc/kernel/prom_parse.c @@ -561,6 +561,9 @@ void of_parse_dma_window(struct device_node *dn, unsigned char *dma_window_prop, *busno = *(dma_window++); prop = get_property(dn, "ibm,#dma-address-cells", NULL); + if (!prop) + prop = get_property(dn, "#address-cells", NULL); + cells = prop ? *(u32 *)prop : prom_n_addr_cells(dn); *phys = of_read_addr(dma_window, cells); |