Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-09-29 19:33:13 +00:00
Code Issues Packages Projects Releases Wiki Activity

dma-debug: report -EEXIST errors in add_dma_entry

Browse Source 
Since, overlapping mappings are not supported by the DMA API we should
report an error if active_cacheline_insert returns -EEXIST.

Suggested-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Hamza Mahfooz <someguy@effective-light.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Hamza Mahfooz 2021-05-18 08:54:43 -04:00 committed by Christoph Hellwig
parent bab1622350
commit 2b4bbc6231
1 changed files with 2 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
kernel/dma/debug.c
View File

@ -566,11 +566,9 @@ static void add_dma_entry(struct dma_debug_entry *entry)
if (rc == -ENOMEM) {
pr_err("cacheline tracking ENOMEM, dma-debug disabled\n");
global_disable = true;
} else if (rc == -EEXIST) {
pr_err("cacheline tracking EEXIST, overlapping mappings aren't supported\n");
}
/* TODO: report -EEXIST errors here as overlapping mappings are
* not supported by the DMA API
*/
}
static int dma_debug_create_entries(gfp_t gfp)