Re: [PATCH] usb: renesas_usbhs: tidyup usbhs_for_each_dfifo macro

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Felipe

ping ?

> From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
> 
> Current usbhs_for_each_dfifo macro will read out-of-array's
> memory after last loop operation.
> It was not good C language operation, and the binary which was
> compiled by (at least) gcc 4.8.1 is broken.
> 
> This patch is based on
> 925403f425a4a9c503f2fc295652647b1eb10d82
> (usb: renesas_usbhs: tidyup original usbhsx_for_each_xxx macro)
> 
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx>
> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
> ---
> >> Felip
> 
> eoriginal patch was posted in
> 
> Subject: [PATCH][RFC] usb: renesas_usbhs: tidyup usbhs_for_each_dfifo macro
> Date: Fri, 3 Apr 2015 00:42:53 +0000
> 
> This is non RFC version
> 
>  drivers/usb/renesas_usbhs/fifo.h | 9 +++++----
>  1 file changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/usb/renesas_usbhs/fifo.h b/drivers/usb/renesas_usbhs/fifo.h
> index 04d3f8a..c7d9b86 100644
> --- a/drivers/usb/renesas_usbhs/fifo.h
> +++ b/drivers/usb/renesas_usbhs/fifo.h
> @@ -44,10 +44,11 @@ struct usbhs_fifo_info {
>  	struct usbhs_fifo dfifo[USBHS_MAX_NUM_DFIFO];
>  };
>  #define usbhsf_get_dnfifo(p, n)	(&((p)->fifo_info.dfifo[n]))
> -#define usbhs_for_each_dfifo(priv, dfifo, i)				\
> -	for ((i) = 0, dfifo = usbhsf_get_dnfifo(priv, (i));		\
> -	     ((i) < USBHS_MAX_NUM_DFIFO);				\
> -	     (i)++, dfifo = usbhsf_get_dnfifo(priv, (i)))
> +#define usbhs_for_each_dfifo(priv, dfifo, i)			\
> +	for ((i) = 0;						\
> +	     ((i) < USBHS_MAX_NUM_DFIFO) &&			\
> +		     ((dfifo) = usbhsf_get_dnfifo(priv, (i)));	\
> +	     (i)++)
>  
>  struct usbhs_pkt_handle;
>  struct usbhs_pkt {
> -- 
> 1.9.1
> 
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux