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Fri, 23 Oct 2026 01:52:16 -0700 (PDT) From: Breno Rodrigues Alves To: Greg Kroah-Hartman Cc: linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Breno Rodrigues Alves Subject: Re: [PATCH] staging: axis-fifo: Fix three real issues Date: Fri, 23 Oct 2026 05:52:00 -0300 Message-ID: <20261023085200.5206-1-breno3011alves@gmail.com> X-Mailer: git-send-email 2.56.0 In-Reply-To: <2026102337-headroom-shun-9d45@gregkh> References: <20261022215349.87471-1-breno3011alves@gmail.com> <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 Hi Greg, You are right, and I apologize for the noise. No tool told me this - it was my own reasoning. I had the (outdated) impression that passing an ERR_PTR parent from debugfs_create_dir() to debugfs_create_file() would trigger a WARN in the debugfs core. That was true years ago, but modern debugfs handles ERR_PTR parents gracefully, and I should have verified the claim on a CONFIG_DEBUG_FS=n kernel before sending the patch. The other two changes are independent of that assumption: - the -EINVAL -> -ENOBUFS change in axis_fifo_read(), which changes the errno returned when the user buffer is smaller than the available data; - the removal of the unused 'struct resource *r_mem' local. If either of those is worth keeping, I can resend with just those two. If the whole patch looks like churn, please let me know and I will drop it. Sorry again, Breno