netdev - Re: [PATCH] bcm43xx: Check error returns in initialization routines

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Date:	Mon, 22 Jan 2007 19:11:20 +0100
From:	Michael Buesch <mb@...sch.de>
To:	Larry Finger <Larry.Finger@...inger.net>
Cc:	John Linville <linville@...driver.com>, netdev@...r.kernel.org,
	Bcm43xx-dev@...ts.berlios.de
Subject: Re: [PATCH] bcm43xx: Check error returns in initialization routines

On Friday 19 January 2007 05:06, Larry Finger wrote:
> A number of the calls in the initialization routines fail to check the returned value for
> errors. This patch adds the necessary checks and logs any errors found when appropriate.

ACK

> Signed-off-by: Larry Finger <Larry.Finger@...inger.net>
> ---
> 
> To be applied to wireless-2.6.
> 
> 
> Index: wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> ===================================================================
> --- wireless-2.6.orig/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> +++ wireless-2.6/drivers/net/wireless/bcm43xx/bcm43xx_main.c
> @@ -2980,8 +2980,10 @@ static int bcm43xx_chipset_attach(struct
>  	err = bcm43xx_pctl_set_crystal(bcm, 1);
>  	if (err)
>  		goto out;
> -	bcm43xx_pci_read_config16(bcm, PCI_STATUS, &pci_status);
> -	bcm43xx_pci_write_config16(bcm, PCI_STATUS, pci_status & ~PCI_STATUS_SIG_TARGET_ABORT);
> +	err = bcm43xx_pci_read_config16(bcm, PCI_STATUS, &pci_status);
> +	if (err)
> +		goto out;
> +	err = bcm43xx_pci_write_config16(bcm, PCI_STATUS, pci_status & ~PCI_STATUS_SIG_TARGET_ABORT);
>  
>  out:
>  	return err;
> @@ -3793,12 +3795,18 @@ static int bcm43xx_attach_board(struct b
>  	}
>  	net_dev->base_addr = (unsigned long)bcm->mmio_addr;
>  
> -	bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_VENDOR_ID,
> +	err = bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_VENDOR_ID,
>  	                          &bcm->board_vendor);
> -	bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_ID,
> +	if (err)
> +		goto err_iounmap;
> +	err = bcm43xx_pci_read_config16(bcm, PCI_SUBSYSTEM_ID,
>  	                          &bcm->board_type);
> -	bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
> +	if (err)
> +		goto err_iounmap;
> +	err = bcm43xx_pci_read_config16(bcm, PCI_REVISION_ID,
>  	                          &bcm->board_revision);
> +	if (err)
> +		goto err_iounmap;
>  
>  	err = bcm43xx_chipset_attach(bcm);
>  	if (err)
> @@ -3889,6 +3897,7 @@ err_pci_release:
>  	pci_release_regions(pci_dev);
>  err_pci_disable:
>  	pci_disable_device(pci_dev);
> +	printk(KERN_ERR PFX "Unable to attach board\n");
>  	goto out;
>  }
> 
> --- 
> 
> 

-- 
Greetings Michael.
-
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