lkml.org 
[lkml]   [2010]   [Dec]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCHv2 3/4] staging: tidspbridge - remove disabling twl when printing DSP stack
Date
Now the SHM segments are not in lock tlbs, instead
they are in translation tables. So we cannot disable
twl in order to get the DSP stack dump. Also add a check
for __get_free_page allocation.

Signed-off-by: Fernando Guzman Lugo <fernando.lugo@ti.com>
---
drivers/staging/tidspbridge/core/ue_deh.c | 9 ++-------
1 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/staging/tidspbridge/core/ue_deh.c b/drivers/staging/tidspbridge/core/ue_deh.c
index 0537edf..183900e 100644
--- a/drivers/staging/tidspbridge/core/ue_deh.c
+++ b/drivers/staging/tidspbridge/core/ue_deh.c
@@ -180,13 +180,8 @@ static void mmu_fault_print_stack(struct bridge_dev_context *dev_context)
resources = dev_context->resources;
dummy_va_addr = (void*)__get_free_page(GFP_ATOMIC);

- /*
- * Before acking the MMU fault, let's make sure MMU can only
- * access entry #0. Then add a new entry so that the DSP OS
- * can continue in order to dump the stack.
- */
- hw_mmu_twl_disable(resources->dw_dmmu_base);
- hw_mmu_tlb_flush_all(resources->dw_dmmu_base);
+ if (!dummy_va_addr)
+ return;

hw_mmu_tlb_add(resources->dw_dmmu_base,
virt_to_phys(dummy_va_addr), fault_addr,
--
1.7.3.2


\
 
 \ /
  Last update: 2010-12-10 04:59    [W:0.188 / U:0.668 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site