Re: [PATCH v2 08/20] cxl/region: Cleanup target list on attach error

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Dan Williams wrote:
> Jonathan noticed that the target list setup is not unwound completely
> upon error. Undo all the setup in the 'err_decrement:' exit path.
> 
> Fixes: 27b3f8d13830 ("cxl/region: Program target lists")
> Reported-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>

Reviewed-by: Ira Weiny <ira.weiny@xxxxxxxxx>

> Link: http://lore.kernel.org/r/20230208123031.00006990@xxxxxxxxxx
> Signed-off-by: Dan Williams <dan.j.williams@xxxxxxxxx>
> ---
>  drivers/cxl/core/region.c |    2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/cxl/core/region.c b/drivers/cxl/core/region.c
> index 040bbd39c81d..ae7d3adcd41a 100644
> --- a/drivers/cxl/core/region.c
> +++ b/drivers/cxl/core/region.c
> @@ -1347,6 +1347,8 @@ static int cxl_region_attach(struct cxl_region *cxlr,
>  
>  err_decrement:
>  	p->nr_targets--;
> +	cxled->pos = -1;
> +	p->targets[pos] = NULL;
>  err:
>  	for (iter = ep_port; !is_cxl_root(iter);
>  	     iter = to_cxl_port(iter->dev.parent))
> 
> 






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