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From: Todd Poynor <toddpoynor@gmail.com>
To: Rob Springer <rspringer@google.com>,
	John Joseph <jnjoseph@google.com>,
	Ben Chan <benchan@chromium.org>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
	Todd Poynor <toddpoynor@google.com>
Subject: [PATCH 08/16] staging: gasket: page table: use dma_mapping_error for error detection
Date: Thu,  9 Aug 2018 20:21:03 -0700
Message-ID: <20180810032111.197743-9-toddpoynor@gmail.com> (raw)
In-Reply-To: <20180810032111.197743-1-toddpoynor@gmail.com>

From: Todd Poynor <toddpoynor@google.com>

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

Signed-off-by: Todd Poynor <toddpoynor@google.com>
---
 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


  parent reply index

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-10  3:20 [PATCH 00/16] staging: gasket: return of the son of cleanups Todd Poynor
2018-08-10  3:20 ` [PATCH 01/16] MAINTAINERS: Switch a maintainer for drivers/staging/gasket Todd Poynor
2018-08-10  3:40   ` John Joseph
2018-08-10  6:14     ` Greg Kroah-Hartman
2018-08-10 10:28       ` Todd Poynor
2018-08-10  3:20 ` [PATCH 02/16] staging: gasket: core: remove debug log that could crash Todd Poynor
     [not found]   ` <CALTjKEM2q=pGh+nz6O7mQerkcnZ+=B6t+viu7dwfMHjZMQRXGg@mail.gmail.com>
2018-08-10 16:57     ` Rob Springer
2018-08-10  3:20 ` [PATCH 03/16] staging: gasket: core: fix line continuation indent in gasket_alloc_dev Todd Poynor
2018-08-10  3:20 ` [PATCH 04/16] staging: gasket: core: remove kobj_name param from gasket_alloc_dev Todd Poynor
2018-08-10  3:21 ` [PATCH 05/16] staging: gasket: core: remove ftrace-style debug logs Todd Poynor
2018-08-10  3:21 ` [PATCH 06/16] staging: gasket: remove gasket_exit() Todd Poynor
2018-08-10  3:21 ` [PATCH 07/16] staging: gasket: page table: remove unnecessary NULL check Todd Poynor
2018-08-10  3:21 ` Todd Poynor [this message]
2018-08-10  3:21 ` [PATCH 09/16] staging: gasket: core: switch to relaxed memory-mapped I/O Todd Poynor
2018-08-10  3:21 ` [PATCH 10/16] staging: gasket: page table: remove extraneous memory barriers Todd Poynor
2018-08-10  3:21 ` [PATCH 11/16] staging: gasket: core: factor out generic device add code from PCI code Todd Poynor
2018-08-10  3:21 ` [PATCH 12/16] staging: gasket: core: factor out generic device remove code from PCI Todd Poynor
2018-08-10  3:21 ` [PATCH 13/16] staging: gasket: core: rename lookup_internal_desc to be PCI-specific Todd Poynor
2018-08-10  3:21 ` [PATCH 14/16] staging: gasket: interrupt: refactor PCI MSIX-specific handler code Todd Poynor
2018-08-10  3:21 ` [PATCH 15/16] staging: gasket: interrupt: simplify interrupt init parameters Todd Poynor
2018-08-10  3:21 ` [PATCH 16/16] staging: gasket: interrupt: remove unimplemented interrupt types Todd Poynor
2018-08-13  6:51 ` [PATCH 00/16] staging: gasket: return of the son of cleanups Christoph Hellwig

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