Re: [PATCH] scsi/aha1740.c Handle scsi_add_host failure

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On Tue, Jan 10, 2006 at 05:51:15PM +0530, Ashutosh Naik wrote:
> Add scsi_add_host() failure handling for Adaptec aha1740 driver.
> 
> Signed-off-by: Ashutosh Naik <ashutosh.naik@xxxxxxxxx>

> diff -Naurp linux-2.6.15-git5-vanilla/drivers/scsi/aha1740.c linux-2.6.15-git5/drivers/scsi/aha1740.c
> --- linux-2.6.15-git5-vanilla/drivers/scsi/aha1740.c	2006-01-03 08:51:10.000000000 +0530
> +++ linux-2.6.15-git5/drivers/scsi/aha1740.c	2006-01-10 16:22:13.000000000 +0530
> @@ -587,7 +587,7 @@ static struct scsi_host_template aha1740
>  
>  static int aha1740_probe (struct device *dev)
>  {
> -	int slotbase;
> +	int slotbase, retval;
>  	unsigned int irq_level, irq_type, translation;
>  	struct Scsi_Host *shpnt;
>  	struct aha1740_hostdata *host;
> @@ -642,7 +642,13 @@ static int aha1740_probe (struct device 
>  	}
>  
>  	eisa_set_drvdata (edev, shpnt);
> -	scsi_add_host (shpnt, dev); /* XXX handle failure */
> +	retval = scsi_add_host (shpnt, dev);
> +	if (retval) {
> +		printk(KERN_WARNING "aha1740: scsi_add_host failed\n");
> +		scsi_host_put (shpnt);
> +		return retval;
> +	}
> +		

this is wrong.  you need to add a new err_free_irq label that frees
the allocated irq and then falls through to the existing error handling
code, starting at the err_unmap label.

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