From: ebiederm@xmission.com (Eric W. Biederman)
To: Lee Jones <lee.jones@linaro.org>
Cc: gregkh@linuxfoundation.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
Sumit Garg <sumit.garg@linaro.org>,
Daniel Thompson <daniel.thompson@linaro.org>,
Douglas Anderson <dianders@chromium.org>,
Petr Mladek <pmladek@suse.com>,
Yinghai Lu <yhlu.kernel@gmail.com>,
Jason Wessel <jason.wessel@windriver.com>
Subject: Re: [PATCH 25/32] usb: early: ehci-dbgp: Remove set but never checked variable 'ret'
Date: Mon, 06 Jul 2020 11:56:24 -0500 [thread overview]
Message-ID: <87imf0mvk7.fsf@x220.int.ebiederm.org> (raw)
In-Reply-To: <20200706133341.476881-26-lee.jones@linaro.org> (Lee Jones's message of "Mon, 6 Jul 2020 14:33:34 +0100")
Lee Jones <lee.jones@linaro.org> writes:
> 'ret' hasn't been checked since the driver's inception in 2009.
Minor quibble the inception was in 5c05917e7fe3 ("x86: usb debug port
early console, v4") in July of 2008.
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
> Fixes the following W=1 kernel build warning(s):
>
> drivers/usb/early/ehci-dbgp.c: In function ‘early_dbgp_write’:
> drivers/usb/early/ehci-dbgp.c:915:13: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
> 915 | int chunk, ret;
> | ^~~
>
> Cc: Sumit Garg <sumit.garg@linaro.org>
> Cc: Daniel Thompson <daniel.thompson@linaro.org>
> Cc: Douglas Anderson <dianders@chromium.org>
> Cc: Petr Mladek <pmladek@suse.com>
> Cc: "Eric W. Biederman" <ebiederm@xmission.com>
> Cc: Yinghai Lu <yhlu.kernel@gmail.com>
> Cc: Jason Wessel <jason.wessel@windriver.com>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
> drivers/usb/early/ehci-dbgp.c | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/usb/early/ehci-dbgp.c b/drivers/usb/early/ehci-dbgp.c
> index 775cf70cfb3ed..b075dbfad730f 100644
> --- a/drivers/usb/early/ehci-dbgp.c
> +++ b/drivers/usb/early/ehci-dbgp.c
> @@ -912,7 +912,7 @@ int __init early_dbgp_init(char *s)
>
> static void early_dbgp_write(struct console *con, const char *str, u32 n)
> {
> - int chunk, ret;
> + int chunk;
> char buf[DBGP_MAX_PACKET];
> int use_cr = 0;
> u32 cmd, ctrl;
> @@ -951,8 +951,8 @@ static void early_dbgp_write(struct console *con, const char *str, u32 n)
> buf[chunk] = *str;
> }
> if (chunk > 0) {
> - ret = dbgp_bulk_write(USB_DEBUG_DEVNUM,
> - dbgp_endpoint_out, buf, chunk);
> + dbgp_bulk_write(USB_DEBUG_DEVNUM,
> + dbgp_endpoint_out, buf, chunk);
> }
> }
> if (unlikely(reset_run)) {
next prev parent reply other threads:[~2020-07-06 17:01 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-06 13:33 [PATCH 00/32] Fix the final bunch of W=1 issues in USB Lee Jones
2020-07-06 13:33 ` [PATCH 01/32] usb: misc: legousbtower: Demote obvious misuse of kerneldoc to standard comment blocks Lee Jones
2020-07-06 13:33 ` [PATCH 02/32] usb: chipidea: ci_hdrc_pci: Fix improper use of kerneldoc format Lee Jones
2020-07-06 13:33 ` [PATCH 03/32] usb: gadget: legacy: printer: Remove unused variable 'driver_desc' Lee Jones
2020-07-06 13:33 ` [PATCH 04/32] usb: gadget: udc: amd5536udc_pci: Remove unused variable 'mod_desc' Lee Jones
2020-07-06 13:33 ` [PATCH 05/32] usb: gadget: function: u_ether: Downgrade kerneldoc headers which to not make the mark Lee Jones
2020-07-06 13:33 ` [PATCH 06/32] usb: gadget: udc: pxa27x_udc: Fix a bunch of kerneldoc issues Lee Jones
2020-07-08 10:32 ` Robert Jarzmik
2020-07-06 13:33 ` [PATCH 07/32] usb: misc: legousbtower: Demote function header which is clearly not kerneldoc Lee Jones
2020-07-06 13:33 ` [PATCH 08/32] usb: typec: tcpm: tcpm: Remove dangling unused 'struct tcpm_altmode_ops' Lee Jones
2020-07-06 14:00 ` Hans de Goede
2020-07-06 14:20 ` Lee Jones
2020-07-09 12:50 ` Hans de Goede
2020-07-09 13:04 ` Lee Jones
2020-07-14 12:01 ` Hans de Goede
2020-07-14 13:54 ` Lee Jones
2020-09-01 2:32 ` Badhri Jagan Sridharan
2020-09-01 7:20 ` Hans de Goede
2020-07-06 13:33 ` [PATCH 09/32] usb: gadget: udc: atmel_usba_udc: Remove set but unused variable 'pp' Lee Jones
2020-07-06 13:33 ` [PATCH 10/32] usb: gadget: legacy: nokia: Remove unused static variable 'product_nokia' Lee Jones
2020-07-06 13:33 ` [PATCH 11/32] usb: gadget: function: f_fs: Demote function header which is clearly not kerneldoc Lee Jones
2020-07-06 13:33 ` [PATCH 12/32] usb: gadget: udc: lpc32xx_udc: Staticify 2 local functions Lee Jones
2020-07-07 6:16 ` Vladimir Zapolskiy
2020-07-06 13:33 ` [PATCH 13/32] usb: host: r8a66597-hcd: Remove set, then over-written, but never used variable 'tmp' Lee Jones
2020-07-06 13:33 ` [PATCH 14/32] usb: gadget: udc: mv_udc_core: Remove unused static const variable 'driver_desc' Lee Jones
2020-07-06 13:33 ` [PATCH 15/32] usb: gadget: udc: pch_udc: Fix a plethora of function documentation related issues Lee Jones
2020-07-06 13:33 ` [PATCH 16/32] usb: host: imx21-hcd: Demote function header which is clearly not kerneldoc Lee Jones
2020-07-06 13:33 ` [PATCH 17/32] usb: host: ehci-fsl: Fix incorrectly named function argument Lee Jones
2020-07-06 13:33 ` [PATCH 18/32] usb: host: fotg210-hcd: Remove unused variable 'hcc_params' Lee Jones
2020-07-06 13:33 ` [PATCH 19/32] usb: gadget: function: u_uac1_legacy: Demote obvious misuse of kerneldoc to standard comment blocks Lee Jones
2020-07-06 13:33 ` [PATCH 20/32] usb: host: bcma-hcd: " Lee Jones
2020-07-06 13:33 ` [PATCH 21/32] usb: host: fotg210-hcd: " Lee Jones
2020-07-06 13:33 ` [PATCH 22/32] usb: gadget: udc: mv_u3d_core: Remove unused static const 'driver_desc' Lee Jones
2020-07-06 13:33 ` [PATCH 23/32] usb: gadget: udc: max3420_udc: Remove set, but never checked variable 'addr' Lee Jones
2020-07-06 16:08 ` Jassi Brar
2020-07-06 13:33 ` [PATCH 24/32] usb: typec: ucsi: ucsi: Staticify and stop export of ucsi_init() Lee Jones
2020-07-06 13:33 ` [PATCH 25/32] usb: early: ehci-dbgp: Remove set but never checked variable 'ret' Lee Jones
2020-07-06 16:56 ` Eric W. Biederman [this message]
2020-07-06 17:57 ` Lee Jones
2020-07-06 13:33 ` [PATCH 26/32] usb: early: xhci-dbc: Supply missing 'xhci-dbgp.h' headerfile Lee Jones
2020-07-06 13:50 ` Jann Horn
2020-07-06 13:33 ` [PATCH 27/32] usb: early: xhci-dbc: File headers are not good candidates for kerneldoc Lee Jones
2020-07-06 13:33 ` [PATCH 28/32] usb: host: ehci-platform: Do not define 'struct acpi_device_id' when !CONFIG_ACPI Lee Jones
2020-07-06 13:33 ` [PATCH 29/32] usb: dwc3: dwc3-qcom: " Lee Jones
2020-07-06 13:33 ` [PATCH 30/32] usb: host: fhci-tds: Remove unused variables 'buf' and 'extra_data' Lee Jones
2020-07-06 13:33 ` [PATCH 31/32] usb: host: fhci-sched: Remove unused variable 'td' Lee Jones
2020-07-06 13:33 ` [PATCH 32/32] usb: host: xhci-plat: Do not define 'struct acpi_device_id' when !CONFIG_ACPI Lee Jones
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