From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Lee Jones <lee.jones@linaro.org>
Cc: linux-kernel@vger.kernel.org,
Mathias Nyman <mathias.nyman@intel.com>,
linux-usb@vger.kernel.org
Subject: Re: [PATCH 17/24] usb: host: xhci: Remove unused variable 'len'
Date: Thu, 27 May 2021 09:26:51 +0200 [thread overview]
Message-ID: <YK9Ju9/kdaRv1jcT@kroah.com> (raw)
In-Reply-To: <20210526130037.856068-18-lee.jones@linaro.org>
On Wed, May 26, 2021 at 02:00:30PM +0100, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
>
> drivers/usb/host/xhci.c: In function ‘xhci_unmap_temp_buf’:
> drivers/usb/host/xhci.c:1349:15: warning: variable ‘len’ set but not used [-Wunused-but-set-variable]
>
> Cc: Mathias Nyman <mathias.nyman@intel.com>
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Cc: linux-usb@vger.kernel.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
> drivers/usb/host/xhci.c | 9 ++++-----
> 1 file changed, 4 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c
> index 27283654ca080..ac2a7d4288883 100644
> --- a/drivers/usb/host/xhci.c
> +++ b/drivers/usb/host/xhci.c
> @@ -1346,7 +1346,6 @@ static bool xhci_urb_temp_buffer_required(struct usb_hcd *hcd,
>
> static void xhci_unmap_temp_buf(struct usb_hcd *hcd, struct urb *urb)
> {
> - unsigned int len;
> unsigned int buf_len;
> enum dma_data_direction dir;
>
> @@ -1362,10 +1361,10 @@ static void xhci_unmap_temp_buf(struct usb_hcd *hcd, struct urb *urb)
> dir);
>
> if (usb_urb_dir_in(urb))
> - len = sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
> - urb->transfer_buffer,
> - buf_len,
> - 0);
> + sg_pcopy_from_buffer(urb->sg, urb->num_sgs,
> + urb->transfer_buffer,
> + buf_len,
> + 0);
Sorry, but no, I keep rejecting this over and over, it needs to handle
the error handling properly and not paper over it like this :(
All the bots keep tripping up on it, you are not alone.
thanks,
greg k-h
next prev parent reply other threads:[~2021-05-27 7:27 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-26 13:00 [PATCH 00/24] Rid W=1 warnings from USB Lee Jones
2021-05-26 13:00 ` [PATCH 01/24] usb: cdns3: core: Fix a couple of incorrectly documented function names Lee Jones
2021-05-26 13:00 ` [PATCH 02/24] usb: dwc2: platform: Provide function name for 'dwc2_check_core_version()' Lee Jones
2021-05-26 15:10 ` Minas Harutyunyan
2021-05-26 13:00 ` [PATCH 03/24] usb: common: ulpi: Add leading underscores for function name '__ulpi_register_driver()' Lee Jones
2021-05-26 14:35 ` Heikki Krogerus
2021-05-26 13:00 ` [PATCH 04/24] usb: cdns3: cdns3-plat: Fix incorrect naming of function 'cdns3_plat_remove()' Lee Jones
2021-05-26 13:00 ` [PATCH 05/24] usb: dwc2: params: Fix naming of 'dwc2_get_hwparams()' in the docs Lee Jones
2021-05-26 15:10 ` Minas Harutyunyan
2021-05-26 13:00 ` [PATCH 06/24] usb: isp1760: isp1760-udc: Provide missing description for 'udc' param Lee Jones
2021-05-26 14:11 ` Rui Miguel Silva
2021-05-26 13:00 ` [PATCH 07/24] usb: cdns3: cdns3-gadget: Fix a bunch of kernel-doc related formatting issues Lee Jones
2021-05-26 13:00 ` [PATCH 08/24] usb: cdns3: cdns3-ti: File headers are not good candidates for kernel-doc Lee Jones
2021-05-26 13:00 ` [PATCH 09/24] usb: cdns3: cdns3-ep0: Fix a few kernel-doc formatting issues Lee Jones
2021-05-26 13:00 ` [PATCH 10/24] usb: cdns3: cdns3-imx: File headers are not good candidates for kernel-doc Lee Jones
2021-05-26 13:00 ` [PATCH 11/24] usb: dwc2: hcd_queue: Fix typeo in function name 'dwc2_hs_pmap_unschedule()' Lee Jones
2021-05-26 15:11 ` Minas Harutyunyan
2021-05-26 13:00 ` [PATCH 12/24] usb: dwc2: pci: Fix possible copy/paste issue Lee Jones
2021-05-26 15:11 ` Minas Harutyunyan
2021-05-26 13:00 ` [PATCH 13/24] usb: chipidea: core: Fix incorrectly documented function 'ci_usb_phy_exit()' Lee Jones
2021-05-26 14:24 ` Sergei Shtylyov
2021-05-26 14:42 ` Lee Jones
2021-05-26 13:00 ` [PATCH 14/24] usb: chipidea: otg: Fix formatting and missing documentation issues Lee Jones
2021-05-26 13:00 ` [PATCH 15/24] usb: dwc2: gadget: Repair 'dwc2_hsotg_core_init_disconnected()'s documentation Lee Jones
2021-05-26 15:11 ` Minas Harutyunyan
2021-05-26 13:00 ` [PATCH 16/24] usb: chipidea: udc: Fix incorrectly documented function 'hw_port_is_high_speed()' Lee Jones
2021-05-26 13:00 ` [PATCH 17/24] usb: host: xhci: Remove unused variable 'len' Lee Jones
2021-05-27 7:26 ` Greg Kroah-Hartman [this message]
2021-05-27 8:16 ` Lee Jones
2021-05-27 9:23 ` Mathias Nyman
2021-05-27 9:50 ` Greg Kroah-Hartman
2021-05-27 11:06 ` Lee Jones
2021-05-26 13:00 ` [PATCH 18/24] usb: gadget: udc: pxa27x_udc: Fix documentation for 'pxa27x_udc_start()' Lee Jones
2021-05-26 13:18 ` Daniel Mack
2021-05-26 13:00 ` [PATCH 19/24] usb: gadget: udc: udc-xilinx: Place correct function names into the headers Lee Jones
2021-05-26 13:00 ` [PATCH 20/24] usb: cdns3: cdns3-gadget: Provide correct function naming for '__cdns3_gadget_ep_queue()' Lee Jones
2021-05-26 13:00 ` [PATCH 21/24] usb: host: xhci: Move array of structs from the stack onto the heap Lee Jones
2021-05-26 14:21 ` Sergei Shtylyov
2021-05-26 14:44 ` Lee Jones
2021-05-26 14:59 ` Sergei Shtylyov
2021-05-26 15:28 ` Lee Jones
2021-05-27 11:36 ` Mathias Nyman
2021-06-01 9:25 ` Lee Jones
2021-06-22 10:47 ` Lee Jones
2021-06-22 11:32 ` Mathias Nyman
2021-05-26 13:00 ` [PATCH 22/24] usb: host: xhci: Document xhci_get_endpoint_index()'s 'desc' param Lee Jones
2021-05-26 13:00 ` [PATCH 23/24] usb: cdns3: cdnsp-gadget: Provide function name for 'cdnsp_find_next_ext_cap()' Lee Jones
2021-05-26 13:00 ` [PATCH 24/24] usb: typec: ucsi: Fix copy/paste issue for 'ucsi_set_drvdata()' Lee Jones
2021-05-26 14:34 ` Heikki Krogerus
2021-05-27 1:46 ` [PATCH 00/24] Rid W=1 warnings from USB Peter Chen
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