linux-kernel - [PATCH v2 4/7] remoteproc: Use kstrdup

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Date:   Wed, 15 Apr 2020 14:48:55 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     bjorn.andersson@...aro.org, ohad@...ery.com
Cc:     s-anna@...com, elder@...aro.org, Markus.Elfring@....de,
        linux-remoteproc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 4/7] remoteproc: Use kstrdup_const() rather than kstrup()

For cases where @firmware is declared "const char *", use function
kstrdup_const() to avoid needlessly creating another copy on the
heap.

Suggested-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---
 drivers/remoteproc/remoteproc_core.c | 4 ++--
 include/linux/remoteproc.h           | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 9899467fa1cf..ebaff496ef81 100644
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -1982,7 +1982,7 @@ static const struct device_type rproc_type = {
 static int rproc_alloc_firmware(struct rproc *rproc,
 				const char *name, const char *firmware)
 {
-	char *p;
+	const char *p;
 
 	if (!firmware)
 		/*
@@ -1991,7 +1991,7 @@ static int rproc_alloc_firmware(struct rproc *rproc,
 		 */
 		p = kasprintf(GFP_KERNEL, "rproc-%s-fw", name);
 	else
-		p = kstrdup(firmware, GFP_KERNEL);
+		p = kstrdup_const(firmware, GFP_KERNEL);
 
 	if (!p)
 		return -ENOMEM;
diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h
index 9c07d7958c53..38607107b7cb 100644
--- a/include/linux/remoteproc.h
+++ b/include/linux/remoteproc.h
@@ -489,7 +489,7 @@ struct rproc {
 	struct list_head node;
 	struct iommu_domain *domain;
 	const char *name;
-	char *firmware;
+	const char *firmware;
 	void *priv;
 	struct rproc_ops *ops;
 	struct device dev;
-- 
2.20.1