linux-kernel - [PATCH 3/3] PCI: tegra: make const array err

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Message-Id: <5f3f35296b944b94546cc7d1e9cc6186484620d8.1620148539.git.christophe.jaillet@wanadoo.fr>
Date:   Tue,  4 May 2021 19:18:04 +0200
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     thierry.reding@...il.com, lorenzo.pieralisi@....com,
        robh@...nel.org, bhelgaas@...gle.com, jonathanh@...dia.com
Cc:     linux-tegra@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>
Subject: [PATCH 3/3] PCI: tegra: make const array err_msg static

Don't populate the array err_msg on the stack but instead make it
static. Makes the object code smaller by 64 bytes.

While at it, add a missing const, as reported by checkpatch.

Compiled with gcc 11.0.1

Before:
$ size drivers/pci/controller/pci-tegra.o
   text	   data	    bss	    dec	    hex	filename
  25623	   2844	     32	  28499	   6f53	drivers/pci/controller/pci-tegra.o

After:
$ size drivers/pci/controller/pci-tegra.o
   text	   data	    bss	    dec	    hex	filename
  25559	   2844	     32	  28435	   6f13	drivers/pci/controller/pci-tegra.o

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
 drivers/pci/controller/pci-tegra.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/controller/pci-tegra.c b/drivers/pci/controller/pci-tegra.c
index fe8e21ce3e3d..b1250b15d290 100644
--- a/drivers/pci/controller/pci-tegra.c
+++ b/drivers/pci/controller/pci-tegra.c
@@ -764,7 +764,7 @@ static int tegra_pcie_map_irq(const struct pci_dev *pdev, u8 slot, u8 pin)
 
 static irqreturn_t tegra_pcie_isr(int irq, void *arg)
 {
-	const char *err_msg[] = {
+	static const char * const err_msg[] = {
 		"Unknown",
 		"AXI slave error",
 		"AXI decode error",
-- 
2.30.2