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by IA1PR11MB7198.namprd11.prod.outlook.com ([fe80::2c4e:e92a:4fa:a456%6]) with mapi id 15.20.9700.010; Mon, 9 Mar 2026 12:35:04 +0000 Message-ID: <62db3005-500d-4110-ad63-9cd200965724@intel.com> Date: Mon, 9 Mar 2026 14:34:58 +0200 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/5] i3c: master: Move rstdaa error suppression To: Jorge Marques CC: Jorge Marques , Alexandre Belloni , Frank Li , =?UTF-8?Q?Przemys=C5=82aw_Gaj?= , , , "Dan Carpenter" , Jonathan Cameron References: <20260308-ad4062-positive-error-fix-v1-0-72d3c5290b4a@analog.com> <20260308-ad4062-positive-error-fix-v1-1-72d3c5290b4a@analog.com> <458bbbb3-babd-45d2-b290-435811058ba3@intel.com> Content-Language: en-US From: Adrian Hunter Organization: Intel Finland Oy, Registered Address: c/o Alberga Business Park, 6 krs, Bertel Jungin Aukio 5, 02600 Espoo, Business Identity Code: 0357606 - 4, Domiciled in Helsinki In-Reply-To: X-ClientProxiedBy: DUZPR01CA0231.eurprd01.prod.exchangelabs.com (2603:10a6:10:4b4::12) To 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ATijTaVZjLriYCDfo4qAydXnhJANHFkgfGfgluHK6EDUKgJ5WDPR9zm71A9IGqYbHeO2/DGzwsymsgjw4cbi7g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR11MB8082 X-OriginatorOrg: intel.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260309_053514_395212_2A024CB6 X-CRM114-Status: GOOD ( 14.47 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On 09/03/2026 14:17, Jorge Marques wrote: > On Mon, Mar 09, 2026 at 01:39:36PM +0200, Adrian Hunter wrote: >> On 08/03/2026 18:47, Jorge Marques wrote: >>> --- a/drivers/i3c/master.c >>> +++ b/drivers/i3c/master.c >>> @@ -1016,6 +1016,10 @@ static int i3c_master_rstdaa_locked(struct i3c_master_controller *master, >>> ret = i3c_master_send_ccc_cmd_locked(master, &cmd); >>> i3c_ccc_cmd_dest_cleanup(&dest); >>> >>> + /* No active devices on the bus. */ >>> + if (ret && cmd.err == I3C_ERROR_M2) >>> + ret = 0; >>> + >>> return ret; >>> } >>> >>> @@ -1785,7 +1789,6 @@ i3c_master_register_new_i3c_devs(struct i3c_master_controller *master) >>> */ >>> int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa) >>> { >>> - int rstret = 0; >>> int ret; >>> >>> ret = i3c_master_rpm_get(master); >>> @@ -1795,9 +1798,9 @@ int i3c_master_do_daa_ext(struct i3c_master_controller *master, bool rstdaa) >>> i3c_bus_maintenance_lock(&master->bus); >>> >>> if (rstdaa) { >>> - rstret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR); >>> - if (rstret == I3C_ERROR_M2) >>> - rstret = 0; >>> + ret = i3c_master_rstdaa_locked(master, I3C_BROADCAST_ADDR); >>> + if (ret) >>> + goto out; >> >> This is an unrelated change. The original intention was to perform >> DAA even if RSTDAA fails. If you really want this, it needs to be >> a separate patch with separate justification. >> >>> } > Hi Adrian, handling I3C_ERROR_M2 is unchanged. > > The intention is to perform the DAA if the RSTDAA fail due to a > I3C_ERROR_M2, this behaviour is unchanged, No, the intention was as the code is written. DAA is done irrespective of whether RSTDAA fails. The behaviour has changed: before it always does DAA, after it does not always. -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c