From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73DCF68 for ; Fri, 26 Nov 2021 20:30:23 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0BBEDC004E1; Fri, 26 Nov 2021 20:30:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637958623; bh=3Ez6hA3NWEj59LlRB6xO3PkLztU9xFstRwP/8ZIKVA8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=T9FCRVny5e1JIkFI3G1lmXSqqcPcOPcS7T6tIkDpk/NtS5zcn+LPAOJTDnnN2oZ1V PUDPCyAA1pEiacX9GOds6TwlXmVRB8xpkyrFJMZ0GcojhZjxBQKa7301muEHsNDTlC cR1yWKhe7vjR6lxgQpu94posgZ3m8Pi7/2gYeXCBHp0W86gnurL10N3y/HEpP6Tcnj POFF0MArPuvXCSYkZPIEfGtuM5n/Y0M8mZlNwlSgPY0yj0lJ0qkIG8wpddw7cozL+q cj12iZscxh8mMTCSp2BDnSUyQYD/J6DzSP/lueLosi5/B8aKEZILK1gaKQOgmvWbmr pQHKxe3c/UNGQ== Date: Fri, 26 Nov 2021 13:30:17 -0700 From: Nathan Chancellor To: Mauro Carvalho Chehab Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Bixuan Cui , Mauro Carvalho Chehab , Nick Desaulniers , linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, llvm@lists.linux.dev Subject: Re: [PATCH 20/20] media: mxl5005s: drop some dead code Message-ID: References: Precedence: bulk X-Mailing-List: llvm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Wed, Nov 24, 2021 at 08:13:23PM +0100, Mauro Carvalho Chehab wrote: > As reported by clang (with W=1), the ctrlVal var is never used. > > Yet, there are even some loops to estimate it. As this is dead > code, remove it. If ever needed, someone could revert this > patch. > > Signed-off-by: Mauro Carvalho Chehab Reviewed-by: Nathan Chancellor > --- > > To avoid mailbombing on a large number of people, only mailing lists were C/C on the cover. > See [PATCH 00/20] at: https://lore.kernel.org/all/cover.1637781097.git.mchehab+huawei@kernel.org/ > > drivers/media/tuners/mxl5005s.c | 14 +------------- > 1 file changed, 1 insertion(+), 13 deletions(-) > > diff --git a/drivers/media/tuners/mxl5005s.c b/drivers/media/tuners/mxl5005s.c > index f6e82a8e7d37..ab4c43df9d18 100644 > --- a/drivers/media/tuners/mxl5005s.c > +++ b/drivers/media/tuners/mxl5005s.c > @@ -3414,9 +3414,8 @@ static u16 MXL_ControlWrite_Group(struct dvb_frontend *fe, u16 controlNum, > u32 value, u16 controlGroup) > { > struct mxl5005s_state *state = fe->tuner_priv; > - u16 i, j, k; > + u16 i, j; > u32 highLimit; > - u32 ctrlVal; > > if (controlGroup == 1) /* Initial Control */ { > > @@ -3432,9 +3431,6 @@ static u16 MXL_ControlWrite_Group(struct dvb_frontend *fe, u16 controlNum, > (u8)(state->Init_Ctrl[i].bit[j]), > (u8)((value>>j) & 0x01)); > } > - ctrlVal = 0; > - for (k = 0; k < state->Init_Ctrl[i].size; k++) > - ctrlVal += state->Init_Ctrl[i].val[k] * (1 << k); > } else > return -1; > } > @@ -3454,9 +3450,6 @@ static u16 MXL_ControlWrite_Group(struct dvb_frontend *fe, u16 controlNum, > (u8)(state->CH_Ctrl[i].bit[j]), > (u8)((value>>j) & 0x01)); > } > - ctrlVal = 0; > - for (k = 0; k < state->CH_Ctrl[i].size; k++) > - ctrlVal += state->CH_Ctrl[i].val[k] * (1 << k); > } else > return -1; > } > @@ -3477,11 +3470,6 @@ static u16 MXL_ControlWrite_Group(struct dvb_frontend *fe, u16 controlNum, > (u8)(state->MXL_Ctrl[i].bit[j]), > (u8)((value>>j) & 0x01)); > } > - ctrlVal = 0; > - for (k = 0; k < state->MXL_Ctrl[i].size; k++) > - ctrlVal += state-> > - MXL_Ctrl[i].val[k] * > - (1 << k); > } else > return -1; > } > -- > 2.33.1 > >