Please ignore this patch.
Thanks,
Deepak
Chitriki Rudramuni, Deepak wrote:
kmalloc() does not guarantee page aligned memory always,hence
resulting in virtual addresses not getting aligned to page boundary.
This patch replaces kmalloc() with __get_free_pages() which
allocates kernel memory in terms of PAGES fixing the Kernel
memory corruption after DSP_MMUFAULT.
Signed-off-by: Deepak Chitriki <deepak.chitriki@xxxxxx>
---
drivers/dsp/bridge/wmd/ue_deh.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/dsp/bridge/wmd/ue_deh.c b/drivers/dsp/bridge/wmd/ue_deh.c
index 14dd8ae..7ed5f60 100644
--- a/drivers/dsp/bridge/wmd/ue_deh.c
+++ b/drivers/dsp/bridge/wmd/ue_deh.c
@@ -239,7 +239,8 @@ void bridge_deh_notify(struct deh_mgr *hdeh_mgr, u32 ulEventMask, u32 dwErrInfo)
"bridge_deh_notify: DSP_MMUFAULT, fault "
"address = 0x%x\n", (unsigned int)fault_addr);
dummy_va_addr =
- (u32) mem_calloc(sizeof(char) * 0x1000, MEM_PAGED);
+ (void *)__get_free_pages(GFP_ATOMIC | __GFP_ZERO,
+ 0);
mem_physical =
VIRT_TO_PHYS(PG_ALIGN_LOW
((u32) dummy_va_addr, PG_SIZE4K));
@@ -338,6 +339,6 @@ dsp_status bridge_deh_get_info(struct deh_mgr *hdeh_mgr,
*/
void bridge_deh_release_dummy_mem(void)
{
- kfree((void *)dummy_va_addr);
+ free_pages((void *)dummy_va_addr, 0);
dummy_va_addr = 0;
}
--
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