linux-kernel - [PATCH] soc: qcom: mdt_loader: Use request_firmware_into

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:   Mon, 26 Jun 2017 13:36:59 -0700
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Andy Gross <andy.gross@...aro.org>,
        David Brown <david.brown@...aro.org>
Cc:     "Luis R. Rodriguez" <mcgrof@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stephen Boyd <sboyd@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] soc: qcom: mdt_loader: Use request_firmware_into_buf()

By switching to the request_firmware_into_buf() we load the segment data
straight into the preallocated buffers, reducing the need for allocating
scratch buffers for these. In particular the modem firmware consists of
multiple segments in the range 5-15MB, making this worth while.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
---
 drivers/soc/qcom/mdt_loader.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/qcom/mdt_loader.c b/drivers/soc/qcom/mdt_loader.c
index bd63df0d14e0..08bd8549242a 100644
--- a/drivers/soc/qcom/mdt_loader.c
+++ b/drivers/soc/qcom/mdt_loader.c
@@ -178,14 +178,13 @@ int qcom_mdt_load(struct device *dev, const struct firmware *fw,
 
 		if (phdr->p_filesz) {
 			sprintf(fw_name + fw_name_len - 3, "b%02d", i);
-			ret = request_firmware(&seg_fw, fw_name, dev);
+			ret = request_firmware_into_buf(&seg_fw, fw_name, dev,
+							ptr, phdr->p_filesz);
 			if (ret) {
 				dev_err(dev, "failed to load %s\n", fw_name);
 				break;
 			}
 
-			memcpy(ptr, seg_fw->data, seg_fw->size);
-
 			release_firmware(seg_fw);
 		}
 
-- 
2.12.0