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

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Message-ID: <24d4b0f2-d8bb-c730-4c37-a8a7c4e07a08@nvidia.com>
Date:   Mon, 5 Jul 2021 22:31:22 +0530
From:   Vidya Sagar <vidyas@...dia.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        <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>
Subject: Re: [PATCH 3/3] PCI: tegra: make const array err_msg static

Reviewed-by: Vidya Sagar <vidyas@...dia.com>

On 5/4/2021 10:48 PM, Christophe JAILLET wrote:
> 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",
>