Re: [PATCH RESEND] usb: storage: realtek_cr: Simplify residue calculation in rts51x_bulk_transport()

From: Greg Kroah-Hartman
Date: Fri Aug 29 2025 - 00:35:02 EST


On Thu, Aug 28, 2025 at 06:26:24PM +0200, Thorsten Blum wrote:
> Simplify the calculation of 'residue' in rts51x_bulk_transport() and
> avoid unnecessarily reassigning 'residue' to itself.
>
> Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Thorsten Blum <thorsten.blum@xxxxxxxxx>
> ---
> drivers/usb/storage/realtek_cr.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/usb/storage/realtek_cr.c b/drivers/usb/storage/realtek_cr.c
> index 2a6c7c567e1c..758258a569a6 100644
> --- a/drivers/usb/storage/realtek_cr.c
> +++ b/drivers/usb/storage/realtek_cr.c
> @@ -261,8 +261,8 @@ static int rts51x_bulk_transport(struct us_data *us, u8 lun,
> * try to compute the actual residue, based on how much data
> * was really transferred and what the device tells us
> */
> - if (residue)
> - residue = residue < buf_len ? residue : buf_len;
> + if (residue > buf_len)
> + residue = buf_len;
>
> if (act_len)
> *act_len = buf_len - residue;
> --
> 2.50.1
>
>

Why is this a RESEND? What happened to the first one?

thanks,

greg k-h