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charset="us-ascii" Content-ID: <97B248F771304F4CB57172528CD9CFBD@namprd04.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: wdc.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB6272.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: f8ede450-f0d2-4f90-1ead-08da9c062274 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Sep 2022 19:18:58.7493 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: b61c8803-16f3-4c35-9b17-6f65f441df86 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: H7GrbNf3cKEdsRniM1w0AtRMxPD4t/4Xk/cksuM0u+t7kGQlmBtHA3NhCO0VoyKmB0I3JK1XV82w1IstiaDcVw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH0PR04MB8322 Precedence: bulk List-ID: X-Mailing-List: linux-ide@vger.kernel.org On Wed, Sep 21, 2022 at 02:01:24PM +0900, Damien Le Moal wrote: > On 9/14/22 00:28, Limonciello, Mario wrote: > >=20 > > I think what happened here is there was related patches from another pa= rty > > that got tangled up with this. >=20 > Niklas and I are investigating this again now because Niklas discovered t= hat > one AMD AHCI adapter leads to drive resets when the drive goes to low pow= er > mode. The adapter is: >=20 > SATA controller [0106]: Advanced Micro Devices, Inc. [AMD] FCH SATA > Controller [AHCI mode] [1022:7901] (rev 51) >=20 > If we switch to performance mode (no LPM), the reset disapears. But if LP= M > is enabled, any command sent after the disk goes to low power mode (devic= e > initiated), there is a link reset... FTR, I sent out a patch for this issue: https://lore.kernel.org/linux-ide/20220921155753.231770-1-niklas.cassel@wdc= .com/T/#u Kind regards, Niklas=