2023-10-27 02:07:55

by Su Hui

[permalink] [raw]
Subject: [PATCH] soc: aspeed: lpc: Fix impossible judgment condition

smatch error:
drivers/soc/aspeed/aspeed-lpc-snoop.c:169
aspeed_lpc_snoop_config_irq() warn: platform_get_irq() does not return zero

platform_get_irq() return non-zero IRQ number or negative error code,
change '!lpc_snoop->irq' to 'lpc_snoop->irq < 0' to fix this.

Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver")
Signed-off-by: Su Hui <[email protected]>
---
drivers/soc/aspeed/aspeed-lpc-snoop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/soc/aspeed/aspeed-lpc-snoop.c b/drivers/soc/aspeed/aspeed-lpc-snoop.c
index 773dbcbc03a6..8cb3a0b4692c 100644
--- a/drivers/soc/aspeed/aspeed-lpc-snoop.c
+++ b/drivers/soc/aspeed/aspeed-lpc-snoop.c
@@ -166,7 +166,7 @@ static int aspeed_lpc_snoop_config_irq(struct aspeed_lpc_snoop *lpc_snoop,
int rc;

lpc_snoop->irq = platform_get_irq(pdev, 0);
- if (!lpc_snoop->irq)
+ if (lpc_snoop->irq < 0)
return -ENODEV;

rc = devm_request_irq(dev, lpc_snoop->irq,
--
2.30.2


2023-10-27 04:38:52

by Dan Carpenter

[permalink] [raw]
Subject: Re: [PATCH] soc: aspeed: lpc: Fix impossible judgment condition

On Fri, Oct 27, 2023 at 10:07:04AM +0800, Su Hui wrote:
> smatch error:
> drivers/soc/aspeed/aspeed-lpc-snoop.c:169
> aspeed_lpc_snoop_config_irq() warn: platform_get_irq() does not return zero
>
> platform_get_irq() return non-zero IRQ number or negative error code,
> change '!lpc_snoop->irq' to 'lpc_snoop->irq < 0' to fix this.
>
> Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver")
> Signed-off-by: Su Hui <[email protected]>

Reviewed-by: Dan Carpenter <[email protected]>

regards,
dan carpenter

2023-10-27 07:17:31

by Greg Kroah-Hartman

[permalink] [raw]
Subject: Re: [PATCH] soc: aspeed: lpc: Fix impossible judgment condition

On Fri, Oct 27, 2023 at 10:07:04AM +0800, Su Hui wrote:
> smatch error:
> drivers/soc/aspeed/aspeed-lpc-snoop.c:169
> aspeed_lpc_snoop_config_irq() warn: platform_get_irq() does not return zero
>
> platform_get_irq() return non-zero IRQ number or negative error code,
> change '!lpc_snoop->irq' to 'lpc_snoop->irq < 0' to fix this.
>
> Fixes: 9f4f9ae81d0a ("drivers/misc: add Aspeed LPC snoop driver")
> Signed-off-by: Su Hui <[email protected]>
> ---
> drivers/soc/aspeed/aspeed-lpc-snoop.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)

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)
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- You have marked a patch with a "Fixes:" tag for a commit that is in an
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follow the documented rules in the
Documentation/process/stable-kernel-rules.rst file for how to resolve
this.

If you wish to discuss this problem further, or you have questions about
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thanks,

greg k-h's patch email bot