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Tue, 14 Jul 2026 17:10:59 -0700 (PDT) X-Received: by 2002:a17:903:2406:b0:2c7:c385:c5a7 with SMTP id d9443c01a7336-2ce8297869amr179293065ad.26.1784074258759; Tue, 14 Jul 2026 17:10:58 -0700 (PDT) Received: from [10.239.133.197] ([114.94.8.21]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ccc9d59e40sm124537915ad.75.2026.07.14.17.10.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Jul 2026 17:10:58 -0700 (PDT) Message-ID: Date: Wed, 15 Jul 2026 08:10:53 +0800 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] cpufreq: spear: Fix an IS_ERR() vs NULL bug in spear1340_set_cpu_rate() To: Dan Carpenter , Deepak Sikri Cc: "Rafael J. Wysocki" , Viresh Kumar , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org, zhongqiu.han@oss.qualcomm.com References: Content-Language: en-US From: Zhongqiu Han In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: pYZ4hqORfSAMpifiNSEYGCPHiD0npXFN X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE0MDI0OSBTYWx0ZWRfXzIrwQ5B9rpkv RCbdXqyvk1lSC+0DCB7V0K8OMGkk8zVNU7c77E2+PhZfmjnrg0JXPF45qdycNH4h5ABLeXty8/g 6R/EnUPEUk/YaZ/fEOWTxs6nfAlp8OzWSzYNDj051B/n6U2NnxcpwdhQtwNxQtNWPV4fFQJP8y1 ZPJt1Lv/7WHHlI0klqKskEfdPBAsGGEqg/FSxW7oNyWIRZfIgRbIlBKORBZjLrjFkknjOCBMmcz +fEZ2d+g//lsgQ12Ua05DOog6UpsJcXhHHxSAcZ90SFNb9Z1OaRmUaW26H+uTIGJ1dMLZi0wAfj s6q5JdlV+Z09HStKxHn3mOlOC9BVAuPBls7j6fIFNd7vrm5uEfjvP3SYPOk4xWiiJf8hRkIv2fu OaEHGylN9Fo4UWueU6lYmQQckIbKu0y8tkVF5IOZtYauzyoqjn0w1dJ7o5+/EdTxYY5sXj7EsFc mVAN0twyNxU5KgareRQ== X-Authority-Analysis: v=2.4 cv=NszhtcdJ c=1 sm=1 tr=0 ts=6a56d014 cx=c_pps a=MTSHoo12Qbhz2p7MsH1ifg==:117 a=Uz3yg00KUFJ2y2WijEJ4bw==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=N0crexS4lfU0QNQj-gkA:9 a=QEXdDO2ut3YA:10 a=GvdueXVYPmCkWapjIL-Q:22 X-Proofpoint-ORIG-GUID: pYZ4hqORfSAMpifiNSEYGCPHiD0npXFN X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE0MDI0OSBTYWx0ZWRfX0tyGl9oaPFPA Gsj5efWGx8KWCga5ypNmD6E8DwvPkGxkzijKjDg2DKWB+gYli9rRQdVZYLxVbXUFukFPo/bgCOi cSmEHZfP/4FvwFXo3Pg2DK5veXGmU14= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-14_05,2026-07-14_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 clxscore=1015 malwarescore=0 spamscore=0 phishscore=0 lowpriorityscore=0 bulkscore=0 adultscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607140249 On 7/14/2026 11:46 PM, Dan Carpenter wrote: > The clk_get_parent() function doesn't return error pointers, it returns > NULL on error. Update the error checking to match. > > Fixes: 420993221175 ("cpufreq: SPEAr: Add CPUFreq driver") > Signed-off-by: Dan Carpenter > --- > v2: fix subsystem prefix in subject Reviewed-by: Zhongqiu Han > > drivers/cpufreq/spear-cpufreq.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/cpufreq/spear-cpufreq.c b/drivers/cpufreq/spear-cpufreq.c > index 81a0780b2ebf..ffe5eda82f0b 100644 > --- a/drivers/cpufreq/spear-cpufreq.c > +++ b/drivers/cpufreq/spear-cpufreq.c > @@ -79,9 +79,9 @@ static int spear1340_set_cpu_rate(struct clk *sys_pclk, unsigned long newfreq) > int ret = 0; > > sys_clk = clk_get_parent(spear_cpufreq.clk); > - if (IS_ERR(sys_clk)) { > + if (!sys_clk) { > pr_err("failed to get cpu's parent (sys) clock\n"); > - return PTR_ERR(sys_clk); > + return -EINVAL; > } > > /* Set the rate of the source clock before changing the parent */ -- Thx and BRs, Zhongqiu Han