diff options
| author | Mike Frysinger <vapier@gentoo.org> | 2011-06-08 15:48:57 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2011-07-23 01:18:17 -0400 |
| commit | e14062563cd5702c656fc9bee14165564341be2b (patch) | |
| tree | 423b8d662d72ded14004d2f2ade42b8326fee68d | |
| parent | ef0531b2e41fd2a0d0ba3ff3cb775947784cc278 (diff) | |
| download | linux-e14062563cd5702c656fc9bee14165564341be2b.tar.bz2 | |
Blackfin: debug-mmrs: disable PERIPHERAL_MAP for IMDMA channels
The documentation for the IMDMA channels appears to be incorrect.
These DMA blocks don't actually have PERIPHERAL_MAP MMRs for us
to access. Attempts to do so lead to system mmr hardware errors.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| -rw-r--r-- | arch/blackfin/kernel/debug-mmrs.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/blackfin/kernel/debug-mmrs.c b/arch/blackfin/kernel/debug-mmrs.c index 40b3a64f8b60..26ebfe8f63c2 100644 --- a/arch/blackfin/kernel/debug-mmrs.c +++ b/arch/blackfin/kernel/debug-mmrs.c @@ -223,7 +223,8 @@ bfin_debug_mmrs_dma(struct dentry *parent, unsigned long base, int num, char mdm __DMA(CURR_DESC_PTR, curr_desc_ptr); __DMA(CURR_ADDR, curr_addr); __DMA(IRQ_STATUS, irq_status); - __DMA(PERIPHERAL_MAP, peripheral_map); + if (strcmp(pfx, "IMDMA") != 0) + __DMA(PERIPHERAL_MAP, peripheral_map); __DMA(CURR_X_COUNT, curr_x_count); __DMA(CURR_Y_COUNT, curr_y_count); } |