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Wed, 18 Mar 2026 06:26:29 -0700 (PDT) Message-ID: <639bd964-b499-4e9f-9035-0010fecfb17c@linaro.org> Date: Wed, 18 Mar 2026 15:26:28 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mtd: spi-nor: micron-st: fix FSR read fallback for controllers returning -ENOTSUPP To: Bean Huo , pratyush@kernel.org, mwalle@kernel.org Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org, zaizhang@cisco.com, Bean Huo References: <20260318131857.2685004-1-beanhuo@iokpp.de> Content-Language: en-US From: Tudor Ambarus In-Reply-To: <20260318131857.2685004-1-beanhuo@iokpp.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, Bean! On 3/18/26 3:18 PM, Bean Huo wrote: > From: Bean Huo > > micron_st_nor_ready() falls back to SR-only polling when the SPI > controller does not support low-level FSR reads, but only checks for > -EOPNOTSUPP (95). Some SPI master drivers return the kernel-internal > -ENOTSUPP (524) for the same condition. The two codes carry identical Isn't it a better fix to update the spi controllers to use EOPNOTSUPP?