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Fri, 17 Jul 2026 09:45:39 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id TplfJcP5WWrpCgAAD6G6ig (envelope-from ); Fri, 17 Jul 2026 09:45:39 +0000 From: Fernando Fernandez Mancera To: linuxppc-dev@lists.ozlabs.org Cc: linux-kernel@vger.kernel.org, chleroy@kernel.org, npiggin@gmail.com, mpe@ellerman.id.au, maddy@linux.ibm.com, gregkh@linuxfoundation.org, arnd@arndb.de, sjitindarsingh@gmail.com, Fernando Fernandez Mancera Subject: [PATCH] char: powernv-op-panel: remove unnecessary reset of position pointer Date: Fri, 17 Jul 2026 11:45:19 +0200 Message-ID: <20260717094519.20656-1-fmancera@suse.de> X-Mailer: git-send-email 2.51.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Spam-Flag: NO X-Spamd-Result: default: False [-2.80 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_MISSING_CHARSET(0.50)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_CC(0.00)[vger.kernel.org,kernel.org,gmail.com,ellerman.id.au,linux.ibm.com,linuxfoundation.org,arndb.de,suse.de]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:email,suse.de:mid,imap1.dmz-prg2.suse.org:helo]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_SEVEN(0.00)[10]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; TO_DN_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FREEMAIL_ENVRCPT(0.00)[gmail.com] X-Spam-Level: X-Spam-Score: -2.80 Content-Type: text/plain; charset="utf-8" The position pointer is only advanced if the return value of the write operation is positive at ksys_write(). Therefore no need to manually reset it when doing error handling. Assisted-by: coccinelle # to find it Signed-off-by: Fernando Fernandez Mancera --- Note: i found this while fixing the same pattern in ipv6/ipv4 sysctl proc handlers. This is not my area of expertise but I thought it was worth contributing it :-) --- drivers/char/powernv-op-panel.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/char/powernv-op-panel.c b/drivers/char/powernv-op-pane= l.c index 63175b765c90..a98acb199805 100644 --- a/drivers/char/powernv-op-panel.c +++ b/drivers/char/powernv-op-panel.c @@ -89,7 +89,6 @@ static int __op_panel_update_display(void) static ssize_t oppanel_write(struct file *filp, const char __user *userbuf, size_t len, loff_t *f_pos) { - loff_t f_pos_prev =3D *f_pos; ssize_t ret; int rc; =20 @@ -105,7 +104,6 @@ static ssize_t oppanel_write(struct file *filp, const c= har __user *userbuf, if (rc !=3D OPAL_SUCCESS) { pr_err_ratelimited("OPAL call failed to write to op panel display [rc= =3D%d]\n", rc); - *f_pos =3D f_pos_prev; return -EIO; } } --=20 2.55.0