From: Rajeshwar R Shinde <coolrrsh@gmail.com>

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

On Sun, Aug 06, 2023 at 02:07:33PM +0530, coolrrsh@gmail.com wrote:
> From: Rajeshwar R Shinde <coolrrsh@gmail.com>
> 
> 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
> 
> _______________________________________________
> Linux-kernel-mentees mailing list
> Linux-kernel-mentees@lists.linuxfoundation.org
> https://lists.linuxfoundation.org/mailman/listinfo/linux-kernel-mentees

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
writing the same thing over and over, yet to different people), I was
created.  Hopefully you will not take offence and will fix the problem
in your patch and resubmit it so that it can be accepted into the Linux
kernel tree.

You are receiving this message because of the following common error(s)
as indicated below:

- This looks like a new version of a previously submitted patch, but you
  did not list below the --- line any changes from the previous version.
  Please read the section entitled "The canonical patch format" in the
  kernel file, Documentation/process/submitting-patches.rst for what
  needs to be done here to properly describe this.

If you wish to discuss this problem further, or you have questions about
how to resolve this issue, please feel free to respond to this email and
Greg will reply once he has dug out from the pending patches received
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thanks,

greg k-h's patch email bot

From: Rajeshwar R Shinde <coolrrsh@gmail.com>

In struct mpc52xx_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-mpc52xx-psc.c:332:5-13:
WARNING: Unsigned expression compared with zero: mps -> irq < 0

---
 drivers/spi/spi-mpc52xx-psc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/spi/spi-mpc52xx-psc.c b/drivers/spi/spi-mpc52xx-psc.c
index 9a1a080fb..795c08594 100644
--- a/drivers/spi/spi-mpc52xx-psc.c
+++ b/drivers/spi/spi-mpc52xx-psc.c
@@ -29,7 +29,7 @@ struct mpc52xx_psc_spi {
 	/* driver internal data */
 	struct mpc52xx_psc __iomem *psc;
 	struct mpc52xx_psc_fifo __iomem *fifo;
-	unsigned int irq;
+	int irq;
 	u8 bits_per_word;
 
 	struct completion done;
-- 
2.25.1

On Sun, 06 Aug 2023 14:07:34 +0530, coolrrsh@gmail.com wrote:
> In struct mpc52xx_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-mpc52xx-psc.c:332:5-13:
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/1] spi: spi-mpc52xx-psc: Fix an unsigned comparison that can never be negative
      commit: 4f5177458ba97734149897c5d4d44f85b8fe0348

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark