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Wed, 4 Nov 2026 19:18:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793819949; bh=mdnthwMs9LvqnLJy6kPpeiwqrlhi6ADC7izliWiN2IE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=ijnLltQe5Qk+CqE+VUlDwwHbbObH+9ltW/RmuNk6+QVTedz2m/LYfiuF9co7AFJwE sjrkuOfRO38+K7HcQrICBAwdPPqSWw81opUhQAieZFdKhLDYrT6ksUVuCvctpIzPGG 5IfV2bo/AIGZF92z/NIw2/tSYbEzpTKjlj5R/IpCOGOCq9t1qLgWWrxzM1Ldm3iL6v jl4JL0l0pT78R+g4k6uEp1SAko5fY5xHs148DGpmxVJocVPvD8ORDyvyCDVv0yKLOp 0BGiObxQ1YUEMDTuDs/OR2Xrm+87BYRn1BsklV+azupKzmP8Z1i0K9CmVfX9sZIjIF wvV04uPKt3MdQ== From: Christian Brauner To: linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , Jann Horn , Josef Bacik , Chris Mason , Jeff Layton , NeilBrown , Eric Dumazet , Thomas Gleixner , Al Viro , Jonathan Corbet , Christoph Hellwig , Greg Kroah-Hartman , Joel Granados , Kees Cook , Jan Kara , Jan Kara , linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-um@lists.infradead.org, linux-wireless@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, ntfs3@lists.linux.dev, platform-driver-x86@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-sound@vger.kernel.org, netfilter-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, ibm-acpi-devel@lists.sourceforge.net, jfs-discussion@lists.sourceforge.net, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cifs@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, sparclinux@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-doc@vger.kernel.org, linux-serial@vger.kernel.org, linux-atm-general@lists.sourceforge.net, Takashi Iwai , linux-input@vger.kernel.org, linux-raid@vger.kernel.org, linux-ext4@vger.kernel.org, linux-modules@vger.kernel.org, linux-debuggers@vger.kernel.org, "Christian Brauner (Amutable)" , Chuck Lever Subject: [PATCH RESEND v2 12/51] powerpc/rtas: consume the whole write to /proc/powerpc/rtas/progress Date: Wed, 4 Nov 2026 20:18:55 +0100 Message-ID: <20261104-work-procfs-bugfixes-v2-12-021c84d852e0@kernel.org> In-Reply-To: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> References: <20261104-work-procfs-bugfixes-v2-0-021c84d852e0@kernel.org> X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" X-Mailer: b4 0.17-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1217; i=brauner@kernel.org; h=from:subject:message-id; bh=uNEn+pHXbIRRMkqtNF6NnFXDW3eMy9Pk3SJ7wJuNwck=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS9brzZHzRlctZde+1Go+8eGv7b1+cVSZ7+f//NhYzz+ 8+/DW/t7ChlYRDjYpAVU2RxaDcJl1vOU7HZKFMDZg4rE8gQBi5OAZhI5ROG/2mHUo8Ur0zzZ3Z9 kx7D/2mua/jtI8eaYjr1fyTPTo02WcfIcOywWBSj5altb2eddZvFnrJ1ZrTjumSG/rNnerMtg50 vcgMA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit X-BeenThere: linux-um@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-um" X-Spam-Status: No, score=-18.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 ppc_rtas_progress_write() shows the first 255 bytes of a write and returns that many, so a writer that loops until everything is written shows the rest as a second message. Return the whole count, the rest is ignored. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Christian Brauner (Amutable) --- arch/powerpc/kernel/rtas-proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/rtas-proc.c b/arch/powerpc/kernel/rtas-proc.c index f38df72e64b8..89b165986851 100644 --- a/arch/powerpc/kernel/rtas-proc.c +++ b/arch/powerpc/kernel/rtas-proc.c @@ -311,6 +311,7 @@ static int ppc_rtas_poweron_show(struct seq_file *m, void *v) static ssize_t ppc_rtas_progress_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos) { + size_t len = count; unsigned long hex; if (count >= MAX_LINELENGTH) @@ -324,7 +325,7 @@ static ssize_t ppc_rtas_progress_write(struct file *file, hex = simple_strtoul(progress_led, NULL, 10); rtas_progress ((char *)progress_led, hex); - return count; + return len; /* clear the line */ /* rtas_progress(" ", 0xffff);*/ -- 2.53.0