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From:   Arnd Bergmann <arnd@arndb.de>
To:     Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
        Vinod Koul <vkoul@kernel.org>
Cc:     Arnd Bergmann <arnd@arndb.de>,
        Dan Williams <dan.j.williams@intel.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Russell King <rmk+kernel@armlinux.org.uk>,
        Joao Pinto <jpinto@synopsys.com>, dmaengine@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH 1/3] [v2] dmaengine: dw-edma: fix unnecessary stack usage
Date:   Mon, 22 Jul 2019 14:44:43 +0200
Message-Id: <20190722124457.1093886-1-arnd@arndb.de>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Putting large constant data on the stack causes unnecessary overhead
and stack usage:

drivers/dma/dw-edma/dw-edma-v0-debugfs.c:285:6: error: stack frame size of 1376 bytes in function 'dw_edma_v0_debugfs_on' [-Werror,-Wframe-larger-than=]

Mark the variable 'static const' in order for the compiler to move it
into the .rodata section where it does no such harm.

Fixes: 305aebeff879 ("dmaengine: Add Synopsys eDMA IP version 0 debugfs support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
v2: unchanged
---
 drivers/dma/dw-edma/dw-edma-v0-debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
index 3226f528cc11..5728b6fe938c 100644
--- a/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
+++ b/drivers/dma/dw-edma/dw-edma-v0-debugfs.c
@@ -48,7 +48,7 @@ static struct {
 } lim[2][EDMA_V0_MAX_NR_CH];
 
 struct debugfs_entries {
-	char					name[24];
+	const char				*name;
 	dma_addr_t				*reg;
 };
 
-- 
2.20.0