[PATCH 08/16] staging: gasket: page table: use dma_mapping_error for error detection

2018-08-09 Thread Todd Poynor 
From: Todd Poynor 

gasket_perform_mapping() call dma_mapping_error() to determine if
mapping failed.

Signed-off-by: Todd Poynor 
---
 drivers/staging/gasket/gasket_page_table.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_page_table.c 
b/drivers/staging/gasket/gasket_page_table.c
index bd921dc6094de..4d2499269499b 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -493,7 +493,8 @@ static int gasket_perform_mapping(struct gasket_page_table 
*pg_tbl,
(void *)page_to_pfn(page),
(unsigned long long)ptes[i].dma_addr);
 
-   if (ptes[i].dma_addr == -1) {
+   if (dma_mapping_error(pg_tbl->device,
+ ptes[i].dma_addr)) {
dev_dbg(pg_tbl->device,
"%s i %d -> fail to map page %llx "
"[pfn %p ohys %p]\n",
-- 
2.18.0.597.ga71716f1ad-goog

[PATCH 08/16] staging: gasket: page table: use dma_mapping_error for error detection

2018-08-09 Thread Todd Poynor 
From: Todd Poynor 

gasket_perform_mapping() call dma_mapping_error() to determine if
mapping failed.

Signed-off-by: Todd Poynor 
---
 drivers/staging/gasket/gasket_page_table.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_page_table.c 
b/drivers/staging/gasket/gasket_page_table.c
index bd921dc6094de..4d2499269499b 100644
--- a/drivers/staging/gasket/gasket_page_table.c
+++ b/drivers/staging/gasket/gasket_page_table.c
@@ -493,7 +493,8 @@ static int gasket_perform_mapping(struct gasket_page_table 
*pg_tbl,
(void *)page_to_pfn(page),
(unsigned long long)ptes[i].dma_addr);
 
-   if (ptes[i].dma_addr == -1) {
+   if (dma_mapping_error(pg_tbl->device,
+ ptes[i].dma_addr)) {
dev_dbg(pg_tbl->device,
"%s i %d -> fail to map page %llx "
"[pfn %p ohys %p]\n",
-- 
2.18.0.597.ga71716f1ad-goog