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Tue, 15 Oct 2024 15:56:45 -0700 (PDT) Received: from [192.168.1.128] ([38.175.170.29]) by smtp.gmail.com with ESMTPSA id e9e14a558f8ab-3a3d70747edsm5306855ab.7.2024.10.15.15.56.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 15 Oct 2024 15:56:45 -0700 (PDT) Message-ID: Date: Tue, 15 Oct 2024 16:56:44 -0600 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] staging: gpib: Remove unused value To: "Everest K.C." , dpenkler@gmail.com, gregkh@linuxfoundation.org Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Shuah Khan References: <20241015210300.17941-1-everestkc@everestkc.com.np> Content-Language: en-US From: Shuah Khan In-Reply-To: <20241015210300.17941-1-everestkc@everestkc.com.np> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 10/15/24 15:02, Everest K.C. wrote: > The variable `complement_count` is assigned a value which is again > overwritten in the next statement. > Fix this by removing the first value assigning statement > > This issue was reported by Coverity Scan. > Report: > CID 1600790: (#1 of 1): Unused value (UNUSED_VALUE) > assigned_value: Assigning value from length to complement_count here, > but that stored value is overwritten before it can be used. > > Fixes: 4e127de14fa7 ("staging: gpib: Add National Instruments USB GPIB driver") > Signed-off-by: Everest K.C. > --- > drivers/staging/gpib/ni_usb/ni_usb_gpib.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c > index 1da263676f2a..e19e18892468 100644 > --- a/drivers/staging/gpib/ni_usb/ni_usb_gpib.c > +++ b/drivers/staging/gpib/ni_usb/ni_usb_gpib.c > @@ -759,7 +759,6 @@ static int ni_usb_write(gpib_board_t *board, uint8_t *buffer, size_t length, > if (!out_data) > return -ENOMEM; > out_data[i++] = 0x0d; > - complement_count = length; > complement_count = length - 1; > complement_count = ~complement_count; > out_data[i++] = complement_count & 0xff; Looks good to me. Reviewed-by: Shuah Khan thanks, -- Shuah