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(host110.181-12-179.telecom.net.ar. [181.12.179.110]) by smtp.gmail.com with ESMTPSA id a1e0cc1a2514c-977cdb07f36sm2524239241.4.2026.07.30.20.44.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 Jul 2026 20:44:14 -0700 (PDT) From: Lucas Jeffrey To: gregkh@linuxfoundation.org Cc: ovidiu.panait.oss@gmail.com, gustavopiazdasilva2102@gmail.com, error27@gmail.com, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Lucas Jeffrey Subject: [PATCH] axis-fifo: use size_t for write size calculations Date: Fri, 31 Jul 2026 00:43:07 -0300 Message-ID: <20260731034307.327377-1-luquijeffrey@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The write length is provided as size_t, but words_to_write and the return value storage used narrower types. Use size_t for the word count and ssize_t for the return value to keep the types consistent with the write interface. This avoids relying on implicit size limits when handling write sizes. Signed-off-by: Lucas Jeffrey --- drivers/staging/axis-fifo/axis-fifo.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c index 3aa2aa870ea9..d2b30b7b6845 100644 --- a/drivers/staging/axis-fifo/axis-fifo.c +++ b/drivers/staging/axis-fifo/axis-fifo.c @@ -214,9 +214,9 @@ static ssize_t axis_fifo_write(struct file *f, const char __user *buf, size_t len, loff_t *off) { struct axis_fifo *fifo = f->private_data; - unsigned int words_to_write; + size_t words_to_write; u32 *txbuf; - int ret; + ssize_t ret; words_to_write = len / sizeof(u32); @@ -257,7 +257,7 @@ static ssize_t axis_fifo_write(struct file *f, const char __user *buf, goto end_unlock; } - for (int i = 0; i < words_to_write; ++i) + for (size_t i = 0; i < words_to_write; ++i) iowrite32(txbuf[i], fifo->base_addr + XLLF_TDFD_OFFSET); iowrite32(len, fifo->base_addr + XLLF_TLR_OFFSET); -- 2.43.0