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1 Apr 2025 10:50:03 +0200 Received: by mail.zeus03.de with UTF8SMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 1 Apr 2025 10:50:03 +0200 X-UD-Smtp-Session: l3s3148p1@P/Bpn7Mxqp4gAwDPXwSgADIEZgbhJYA3 Date: Tue, 1 Apr 2025 10:50:03 +0200 From: Wolfram Sang To: Ulf Hansson , linux-mmc@vger.kernel.org, Adrian Hunter , Yoshihiro Shimoda , linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/5] mmc: core: Add support for graceful host removal for SD Message-ID: Mail-Followup-To: Wolfram Sang , Ulf Hansson , linux-mmc@vger.kernel.org, Adrian Hunter , Yoshihiro Shimoda , linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250320140040.162416-1-ulf.hansson@linaro.org> <20250320140040.162416-6-ulf.hansson@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ToF48I1XcfM4hum/" Content-Disposition: inline In-Reply-To: --ToF48I1XcfM4hum/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Mar 31, 2025 at 10:30:35AM +0200, Wolfram Sang wrote: > On Thu, Mar 20, 2025 at 03:00:36PM +0100, Ulf Hansson wrote: > > An mmc host driver may allow to unbind from its corresponding host devi= ce. > > If an SD card is attached to the host, the mmc core will just try to cut > > the power for it, without obeying to the SD spec that potentially may > > damage the card. > >=20 > > Let's fix this problem by implementing a graceful power-down of the car= d at > > host removal. > >=20 > > Signed-off-by: Ulf Hansson >=20 > Reviewed-by: Wolfram Sang I couldn't find a card yet which has SD_EXT_POWER_OFF_NOTIFY set, but at least I can confirm that the actual code paths are taken: Tested-by: Wolfram Sang --ToF48I1XcfM4hum/ Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmfrqLcACgkQFA3kzBSg KbayCQ/9ENKNTjnz60IpIXkrfrVsl5EOayLUpw7H9gswST50Cn2u1dLEdyy/5YD7 mUB0C9vimOhbWGX7PS0RhfcSVfWxsL3ixc4NKl3XxBqzecFqNjvkJI/eiNY/pbFj 0z+3+uu0NUVLGjxIBdU+F/wncrdpKQV5yDMP2bhAtPDPz9i8fVlA4K/aQ8yTcTCO RzVKvobEck88KluUKvPhbcqn+w/cCMjAaKaqtaLnh1YVAx0p5EAmwVdSaJ54hkKS VAsvzi0r5roA6FD/qIKfP9m/3Z3JubbVyOcd4rrmfECuA+z9E4P0qqDt0tMpWV6i 0MuSXjCSFGSdQsBpK8uhe+LtQCJQF3Er23XFE0TRe5/fiKtovCb+h9Jd2BC3p1lb V274fiN/KRZG+pWCO9DYErQs28iACOdC+T8Nj2GYVSxQPgZMDaoTPS4Iki3ruYRn wKbrxScZq4Kbau6Sq9wWKvsGkz9p6OWUBsCW52etrLXvN9chhVDyfKyxEayqsawB swd7iWdby3KefvmAzI77nas2CCy6YhTTVKIp8F00aAQentWucEPohsPCa96fgVYA nNch/rVv/JDWRgMb2kaaKIHfxPEBM9xaOKhSWS0D8LAn4dohfyOB3kvsRiWg4G/e /elUi4y4is6CIljh1vqfvS7WBNzAgoy5G3ej12B38IZetROepco= =aQ0j -----END PGP SIGNATURE----- --ToF48I1XcfM4hum/--