[PATCH v2] EDAC/synopsys: Fix cleanup on injection sysfs failure

[Michal Simek]

On 6/5/26 14:54, Yuho Choi wrote:
> edac_create_sysfs_attributes() creates inject_data_error before
> inject_data_poison. If the second file creation fails, the first file is
> left behind.
> 
> The same failure path runs after edac_mc_add_mc() has registered the
> memory controller with the EDAC core. Jumping directly to edac_mc_free()
> skips edac_mc_del_mc() and leaves the registered controller state
> unwound incorrectly.
> 
> Remove inject_data_error when inject_data_poison creation fails, and
> route the probe failure through edac_mc_del_mc() before freeing mci.
> 
> Fixes: 1a81361f75d8 ("EDAC, synopsys: Add Error Injection support for ZynqMP DDR controller")
> Signed-off-by: Yuho Choi <dbgh9129 at gmail.com>
> ---
> Changes in v2:
> - Remove the CONFIG_EDAC_DEBUG-guarded del_mc label.
> - Call edac_mc_del_mc() inline before jumping to free_edac_mc when
>    edac_create_sysfs_attributes() fails.
> 
>   drivers/edac/synopsys_edac.c | 5 ++++-
>   1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
> index 51143b3257de..9ca2a842612e 100644
> --- a/drivers/edac/synopsys_edac.c
> +++ b/drivers/edac/synopsys_edac.c
> @@ -1120,8 +1120,10 @@ static int edac_create_sysfs_attributes(struct mem_ctl_info *mci)
>   	if (rc < 0)
>   		return rc;
>   	rc = device_create_file(&mci->dev, &dev_attr_inject_data_poison);
> -	if (rc < 0)
> +	if (rc < 0) {
> +		device_remove_file(&mci->dev, &dev_attr_inject_data_error);
>   		return rc;
> +	}
>   	return 0;
>   }
>   
> @@ -1431,6 +1433,7 @@ static int mc_probe(struct platform_device *pdev)
>   		if (rc) {
>   			edac_printk(KERN_ERR, EDAC_MC,
>   					"Failed to create sysfs entries\n");
> +			edac_mc_del_mc(&pdev->dev);
>   			goto free_edac_mc;
>   		}
>   	}

Cc: stable at vger.kernel.org
Acked-by: Michal Simek <michal.simek at amd.com>

Thanks,
Michal