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Fri, 23 Oct 2026 03:40:00 -0700 (PDT) Received: from Biostar-A520MT ([187.94.15.233]) by smtp.gmail.com with ESMTPSA id ada2fe7eead31-7ccc20fed4fsm2546405137.7.2026.10.23.03.39.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Oct 2026 03:40:00 -0700 (PDT) From: Breno Rodrigues Alves To: Greg Kroah-Hartman Cc: Dan Carpenter , linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Breno Rodrigues Alves Subject: [PATCH v2] staging: axis-fifo: remove unused r_mem local variable Date: Fri, 23 Oct 2026 07:39:43 -0300 Message-ID: <20261023103943.20995-1-breno3011alves@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <2026102337-headroom-shun-9d45@gregkh> References: <2026102337-headroom-shun-9d45@gregkh> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove 'struct resource *r_mem' from axis_fifo_probe(). It is filled in by devm_platform_get_and_ioremap_resource() but never read; pass NULL instead. This is v2 of a three-change series. The debugfs_create_dir() check was dropped because debugfs has handled ERR_PTR parents gracefully since 2019 (thanks Greg and Dan for the correction). The -EINVAL -> -ENOBUFS change was dropped as well, after Dan Carpenter noted that -EINVAL is the common errno for this path and that he would leave the choice to the author. Signed-off-by: Breno Rodrigues Alves --- drivers/staging/axis-fifo/axis-fifo.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/staging/axis-fifo/axis-fifo.c b/drivers/staging/axis-fifo/axis-fifo.c index 3d358f919..464368e04 100644 --- a/drivers/staging/axis-fifo/axis-fifo.c +++ b/drivers/staging/axis-fifo/axis-fifo.c @@ -428,7 +428,6 @@ static int axis_fifo_parse_dt(struct axis_fifo *fifo) static int axis_fifo_probe(struct platform_device *pdev) { - struct resource *r_mem; struct device *dev = &pdev->dev; struct axis_fifo *fifo = NULL; int rc = 0; /* error return value */ @@ -447,7 +446,7 @@ static int axis_fifo_probe(struct platform_device *pdev) mutex_init(&fifo->read_lock); mutex_init(&fifo->write_lock); - fifo->base_addr = devm_platform_get_and_ioremap_resource(pdev, 0, &r_mem); + fifo->base_addr = devm_platform_get_and_ioremap_resource(pdev, 0, NULL); if (IS_ERR(fifo->base_addr)) return PTR_ERR(fifo->base_addr); -- 2.56.0