Re: [PATCH v3] spi: spi-mpc512x-psc: Fix an unsigned comparison that can never be negative

[Greg KH]

On Sun, Aug 06, 2023 at 02:07:33PM +0530, coolrrsh@xxxxxxxxx wrote:
> From: Rajeshwar R Shinde <coolrrsh@xxxxxxxxx>
> 
> In struct mpc512x_psc_spi, the variable 'irq' is declared as an unsigned int.
> The comparison of variable 'irq'  with signed int operand is incorrect. Also,
> the return value from the call to platform_get_irq(pdev,0) is int and it is 
> assigned to an unsigned int variable 'irq', thus redeclaring the type of 
> variable 'irq' to signed int.
> 
> This fixes warning such as:
> drivers/spi/spi-mpc512x-psc.c:493:5-13: 
> WARNING: Unsigned expression compared with zero: mps -> irq < 0
> 
> ---
>  drivers/spi/spi-mpc512x-psc.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/spi/spi-mpc512x-psc.c b/drivers/spi/spi-mpc512x-psc.c
> index 99aeef28a..5cecca1be 100644
> --- a/drivers/spi/spi-mpc512x-psc.c
> +++ b/drivers/spi/spi-mpc512x-psc.c
> @@ -53,7 +53,7 @@ struct mpc512x_psc_spi {
>  	int type;
>  	void __iomem *psc;
>  	struct mpc512x_psc_fifo __iomem *fifo;
> -	unsigned int irq;
> +	int irq;
>  	u8 bits_per_word;
>  	u32 mclk_rate;
>  
> -- 
> 2.25.1
> 
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Hi,

This is the friendly patch-bot of Greg Kroah-Hartman.  You have sent him
a patch that has triggered this response.  He used to manually respond
to these common problems, but in order to save his sanity (he kept
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created.  Hopefully you will not take offence and will fix the problem
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