From: Todd Poynor Date: Fri, 10 Aug 2018 03:21:03 +0000 (-0700) Subject: staging: gasket: page table: use dma_mapping_error for error detection X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=6c258edc64ae3d655a37abb773c21492a5196bf2;p=openwrt%2Fstaging%2Fblogic.git staging: gasket: page table: use dma_mapping_error for error detection gasket_perform_mapping() call dma_mapping_error() to determine if mapping failed. Signed-off-by: Todd Poynor Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/gasket/gasket_page_table.c b/drivers/staging/gasket/gasket_page_table.c index bd921dc6094d..4d2499269499 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",