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[198.145.64.163]) by smtp.gmail.com with ESMTPSA id b1sm3836817pjc.33.2020.06.03.16.32.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jun 2020 16:32:16 -0700 (PDT) From: Kees Cook To: linux-kernel@vger.kernel.org Cc: Kees Cook , Linus Torvalds , Miguel Ojeda , Alexander Potapenko , Joe Perches , Andy Whitcroft , x86@kernel.org, drbd-dev@lists.linbit.com, linux-block@vger.kernel.org, b43-dev@lists.infradead.org, netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-ide@vger.kernel.org, linux-clk@vger.kernel.org, linux-spi@vger.kernel.org, linux-mm@kvack.org, clang-built-linux@googlegroups.com Subject: [PATCH 06/10] clk: st: Remove uninitialized_var() usage Date: Wed, 3 Jun 2020 16:31:59 -0700 Message-Id: <20200603233203.1695403-7-keescook@chromium.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200603233203.1695403-1-keescook@chromium.org> References: <20200603233203.1695403-1-keescook@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Rspamd-Queue-Id: F35741803F9A9 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam05 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Using uninitialized_var() is dangerous as it papers over real bugs[1] (or can in the future), and suppresses unrelated compiler warnings (e.g. "unused variable"). If the compiler thinks it is uninitialized, either simply initialize the variable or make compiler changes. As a precursor to removing[2] this[3] macro[4], just remove this variable since it was actually unused: drivers/clk/st/clkgen-fsyn.c: In function =E2=80=98quadfs_set_rate=E2=80=99= : drivers/clk/st/clkgen-fsyn.c:793:6: warning: unused variable =E2=80=98i=E2= =80=99 [-Wunused-variable] 793 | int i; | ^ [1] https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.co= m/ [2] https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=3D1TGqCR5vQkCzWJ0QxK6Cern= OU6eedsudAixw@mail.gmail.com/ [3] https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz= 9knmPuXhOeg@mail.gmail.com/ [4] https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=3DyVJu65TpLg= N_ybYNv0VEOKA@mail.gmail.com/ Signed-off-by: Kees Cook --- drivers/clk/st/clkgen-fsyn.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/clk/st/clkgen-fsyn.c b/drivers/clk/st/clkgen-fsyn.c index a156bd0c6af7..f1adc858b590 100644 --- a/drivers/clk/st/clkgen-fsyn.c +++ b/drivers/clk/st/clkgen-fsyn.c @@ -790,7 +790,6 @@ static int quadfs_set_rate(struct clk_hw *hw, unsigne= d long rate, struct st_clk_quadfs_fsynth *fs =3D to_quadfs_fsynth(hw); struct stm_fs params; long hwrate; - int uninitialized_var(i); =20 if (!rate || !parent_rate) return -EINVAL; --=20 2.25.1