From e14062563cd5702c656fc9bee14165564341be2b Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Wed, 8 Jun 2011 15:48:57 -0400 Subject: [PATCH] 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 --- arch/blackfin/kernel/debug-mmrs.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) 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); } -- 2.20.1