linux-kernel - [PATCH AUTOSEL 6.6 10/10] dmaengine: dw-edma: increase size of 'name' in debugfs code

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Date: Mon, 29 Jan 2024 13:35:18 -0500
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Vinod Koul <vkoul@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	manivannan.sadhasivam@...aro.org,
	dmaengine@...r.kernel.org
Subject: [PATCH AUTOSEL 6.6 10/10] dmaengine: dw-edma: increase size of 'name' in debugfs code

From: Vinod Koul <vkoul@...nel.org>

[ Upstream commit cb95a4fa50bbc1262bfb7fea482388a50b12948f ]

We seem to have hit warnings of 'output may be truncated' which is fixed
by increasing the size of 'name'

drivers/dma/dw-edma/dw-hdma-v0-debugfs.c: In function ‘dw_hdma_v0_debugfs_on’:
drivers/dma/dw-edma/dw-hdma-v0-debugfs.c:125:50: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Werror=format-truncation=]
  125 |                 snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i);
      |                                                  ^~

drivers/dma/dw-edma/dw-hdma-v0-debugfs.c: In function ‘dw_hdma_v0_debugfs_on’:
drivers/dma/dw-edma/dw-hdma-v0-debugfs.c:142:50: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Werror=format-truncation=]
  142 |                 snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i);
      |                                                  ^~
drivers/dma/dw-edma/dw-edma-v0-debugfs.c: In function ‘dw_edma_debugfs_regs_wr’:
drivers/dma/dw-edma/dw-edma-v0-debugfs.c:193:50: error: ‘%d’ directive output may be truncated writing between 1 and 11 bytes into a region of size 8 [-Werror=format-truncation=]
  193 |                 snprintf(name, sizeof(name), "%s:%d", CHANNEL_STR, i);
      |                                                  ^~

Signed-off-by: Vinod Koul <vkoul@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 4 ++--
 drivers/dma/dw-edma/dw-hdma-v0-debugfs.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
index 0745d9e7d259..406f169b09a7 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
@@ -176,7 +176,7 @@ dw_edma_debugfs_regs_wr(struct dw_edma *dw, struct dentry *dent)
 	};
 	struct dentry *regs_dent, *ch_dent;
 	int nr_entries, i;
-	char name[16];
+	char name[32];
 
 	regs_dent = debugfs_create_dir(WRITE_STR, dent);
 
@@ -239,7 +239,7 @@ static noinline_for_stack void dw_edma_debugfs_regs_rd(struct dw_edma *dw,
 	};
 	struct dentry *regs_dent, *ch_dent;
 	int nr_entries, i;
-	char name[16];
+	char name[32];
 
 	regs_dent = debugfs_create_dir(READ_STR, dent);
 
diff --git a/drivers/dma/dw-edma/dw-hdma-v0-debugfs.c b/drivers/dma/dw-edma/dw-hdma-v0-debugfs.c
index 520c81978b08..dcdc57fe976c 100644
--- a/drivers/dma/dw-edma/dw-hdma-v0-debugfs.c
+++ b/drivers/dma/dw-edma/dw-hdma-v0-debugfs.c
@@ -116,7 +116,7 @@ static void dw_hdma_debugfs_regs_ch(struct dw_edma *dw, enum dw_edma_dir dir,
 static void dw_hdma_debugfs_regs_wr(struct dw_edma *dw, struct dentry *dent)
 {
 	struct dentry *regs_dent, *ch_dent;
-	char name[16];
+	char name[32];
 	int i;
 
 	regs_dent = debugfs_create_dir(WRITE_STR, dent);
@@ -133,7 +133,7 @@ static void dw_hdma_debugfs_regs_wr(struct dw_edma *dw, struct dentry *dent)
 static void dw_hdma_debugfs_regs_rd(struct dw_edma *dw, struct dentry *dent)
 {
 	struct dentry *regs_dent, *ch_dent;
-	char name[16];
+	char name[32];
 	int i;
 
 	regs_dent = debugfs_create_dir(READ_STR, dent);
-- 
2.43.0