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([2a01:e0a:982:cbb0:58e3:6b80:c446:11f4]) by smtp.gmail.com with ESMTPSA id jj26-20020a05600c6a1a00b0041294a6fc03sm1541476wmb.9.2024.02.23.03.04.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 23 Feb 2024 03:04:49 -0800 (PST) Message-ID: Date: Fri, 23 Feb 2024 12:04:48 +0100 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird From: Neil Armstrong Reply-To: neil.armstrong@linaro.org Subject: Re: [PATCH 4/6] soc: qcom: pmic_glink: Fix boot when QRTR=m Content-Language: en-US, fr To: Johan Hovold , Bjorn Andersson , Andrzej Hajda , Robert Foss , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Vinod Koul Cc: Jonas Karlman , Laurent Pinchart , Jernej Skrabec , Konrad Dybcio , Kishon Vijay Abraham I , Dmitry Baryshkov , Rob Clark , Abhinav Kumar , Kuogee Hsieh , freedreno@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, Rob Clark , stable@vger.kernel.org References: <20240217150228.5788-1-johan+linaro@kernel.org> <20240217150228.5788-5-johan+linaro@kernel.org> Autocrypt: addr=neil.armstrong@linaro.org; keydata= xsBNBE1ZBs8BCAD78xVLsXPwV/2qQx2FaO/7mhWL0Qodw8UcQJnkrWmgTFRobtTWxuRx8WWP GTjuhvbleoQ5Cxjr+v+1ARGCH46MxFP5DwauzPekwJUD5QKZlaw/bURTLmS2id5wWi3lqVH4 BVF2WzvGyyeV1o4RTCYDnZ9VLLylJ9bneEaIs/7cjCEbipGGFlfIML3sfqnIvMAxIMZrvcl9 qPV2k+KQ7q+aXavU5W+yLNn7QtXUB530Zlk/d2ETgzQ5FLYYnUDAaRl+8JUTjc0CNOTpCeik 80TZcE6f8M76Xa6yU8VcNko94Ck7iB4vj70q76P/J7kt98hklrr85/3NU3oti3nrIHmHABEB AAHNKk5laWwgQXJtc3Ryb25nIDxuZWlsLmFybXN0cm9uZ0BsaW5hcm8ub3JnPsLAkQQTAQoA OwIbIwULCQgHAwUVCgkICwUWAgMBAAIeAQIXgBYhBInsPQWERiF0UPIoSBaat7Gkz/iuBQJk Q5wSAhkBAAoJEBaat7Gkz/iuyhMIANiD94qDtUTJRfEW6GwXmtKWwl/mvqQtaTtZID2dos04 YqBbshiJbejgVJjy+HODcNUIKBB3PSLaln4ltdsV73SBcwUNdzebfKspAQunCM22Mn6FBIxQ GizsMLcP/0FX4en9NaKGfK6ZdKK6kN1GR9YffMJd2P08EO8mHowmSRe/ExAODhAs9W7XXExw UNCY4pVJyRPpEhv373vvff60bHxc1k/FF9WaPscMt7hlkbFLUs85kHtQAmr8pV5Hy9ezsSRa GzJmiVclkPc2BY592IGBXRDQ38urXeM4nfhhvqA50b/nAEXc6FzqgXqDkEIwR66/Gbp0t3+r yQzpKRyQif3OwE0ETVkGzwEIALyKDN/OGURaHBVzwjgYq+ZtifvekdrSNl8TIDH8g1xicBYp QTbPn6bbSZbdvfeQPNCcD4/EhXZuhQXMcoJsQQQnO4vwVULmPGgtGf8PVc7dxKOeta+qUh6+ SRh3vIcAUFHDT3f/Zdspz+e2E0hPV2hiSvICLk11qO6cyJE13zeNFoeY3ggrKY+IzbFomIZY 4yG6xI99NIPEVE9lNBXBKIlewIyVlkOaYvJWSV+p5gdJXOvScNN1epm5YHmf9aE2ZjnqZGoM Mtsyw18YoX9BqMFInxqYQQ3j/HpVgTSvmo5ea5qQDDUaCsaTf8UeDcwYOtgI8iL4oHcsGtUX oUk33HEAEQEAAcLAXwQYAQIACQUCTVkGzwIbDAAKCRAWmrexpM/4rrXiB/sGbkQ6itMrAIfn M7IbRuiSZS1unlySUVYu3SD6YBYnNi3G5EpbwfBNuT3H8//rVvtOFK4OD8cRYkxXRQmTvqa3 3eDIHu/zr1HMKErm+2SD6PO9umRef8V82o2oaCLvf4WeIssFjwB0b6a12opuRP7yo3E3gTCS KmbUuLv1CtxKQF+fUV1cVaTPMyT25Od+RC1K+iOR0F54oUJvJeq7fUzbn/KdlhA8XPGzwGRy 4zcsPWvwnXgfe5tk680fEKZVwOZKIEuJC3v+/yZpQzDvGYJvbyix0lHnrCzq43WefRHI5XTT QbM0WUIBIcGmq38+OgUsMYu4NzLu7uZFAcmp6h8g Organization: Linaro Developer Services In-Reply-To: <20240217150228.5788-5-johan+linaro@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 17/02/2024 16:02, Johan Hovold wrote: > From: Rob Clark > > We need to bail out before adding/removing devices if we are going to > -EPROBE_DEFER. Otherwise boot can get stuck in a probe deferral loop due > to a long-standing issue in driver core (see fbc35b45f9f6 ("Add > documentation on meaning of -EPROBE_DEFER")). > > Deregistering the altmode child device can potentially also trigger bugs > in the DRM bridge implementation, which does not expect bridges to go > away. > > Suggested-by: Dmitry Baryshkov > Signed-off-by: Rob Clark > Link: https://lore.kernel.org/r/20231213210644.8702-1-robdclark@gmail.com > [ johan: rebase on 6.8-rc4, amend commit message and mention DRM ] > Fixes: 58ef4ece1e41 ("soc: qcom: pmic_glink: Introduce base PMIC GLINK driver") > Cc: stable@vger.kernel.org # 6.3 > Cc: Bjorn Andersson > Signed-off-by: Johan Hovold > --- > drivers/soc/qcom/pmic_glink.c | 21 +++++++++++---------- > 1 file changed, 11 insertions(+), 10 deletions(-) > > diff --git a/drivers/soc/qcom/pmic_glink.c b/drivers/soc/qcom/pmic_glink.c > index f4bfd24386f1..f913e9bd57ed 100644 > --- a/drivers/soc/qcom/pmic_glink.c > +++ b/drivers/soc/qcom/pmic_glink.c > @@ -265,10 +265,17 @@ static int pmic_glink_probe(struct platform_device *pdev) > > pg->client_mask = *match_data; > > + pg->pdr = pdr_handle_alloc(pmic_glink_pdr_callback, pg); > + if (IS_ERR(pg->pdr)) { > + ret = dev_err_probe(&pdev->dev, PTR_ERR(pg->pdr), > + "failed to initialize pdr\n"); > + return ret; > + } > + > if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_UCSI)) { > ret = pmic_glink_add_aux_device(pg, &pg->ucsi_aux, "ucsi"); > if (ret) > - return ret; > + goto out_release_pdr_handle; > } > if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_ALTMODE)) { > ret = pmic_glink_add_aux_device(pg, &pg->altmode_aux, "altmode"); > @@ -281,17 +288,11 @@ static int pmic_glink_probe(struct platform_device *pdev) > goto out_release_altmode_aux; > } > > - pg->pdr = pdr_handle_alloc(pmic_glink_pdr_callback, pg); > - if (IS_ERR(pg->pdr)) { > - ret = dev_err_probe(&pdev->dev, PTR_ERR(pg->pdr), "failed to initialize pdr\n"); > - goto out_release_aux_devices; > - } > - > service = pdr_add_lookup(pg->pdr, "tms/servreg", "msm/adsp/charger_pd"); > if (IS_ERR(service)) { > ret = dev_err_probe(&pdev->dev, PTR_ERR(service), > "failed adding pdr lookup for charger_pd\n"); > - goto out_release_pdr_handle; > + goto out_release_aux_devices; > } > > mutex_lock(&__pmic_glink_lock); > @@ -300,8 +301,6 @@ static int pmic_glink_probe(struct platform_device *pdev) > > return 0; > > -out_release_pdr_handle: > - pdr_handle_release(pg->pdr); > out_release_aux_devices: > if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_BATT)) > pmic_glink_del_aux_device(pg, &pg->ps_aux); > @@ -311,6 +310,8 @@ static int pmic_glink_probe(struct platform_device *pdev) > out_release_ucsi_aux: > if (pg->client_mask & BIT(PMIC_GLINK_CLIENT_UCSI)) > pmic_glink_del_aux_device(pg, &pg->ucsi_aux); > +out_release_pdr_handle: > + pdr_handle_release(pg->pdr); > > return ret; > } Reviewed-by: Neil Armstrong