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charset=UTF-8 Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240830_222159_501267_571766F6 X-CRM114-Status: GOOD ( 17.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 31/08/2024 03:59, Jinjie Ruan wrote: > > > On 2024/8/30 18:31, Nishanth Menon wrote: >> On 14:32-20240830, Jinjie Ruan wrote: >>> Use the dev_err_probe() helper to simplify error handling >>> during probe. >>> >>> Signed-off-by: Jinjie Ruan >>> --- >>> v2: >>> - Split into 2 patches. >>> --- >>> drivers/soc/ti/knav_dma.c | 12 ++++-------- >>> 1 file changed, 4 insertions(+), 8 deletions(-) >>> >>> diff --git a/drivers/soc/ti/knav_dma.c b/drivers/soc/ti/knav_dma.c >>> index 15e41d3a5e22..eeec422a46f0 100644 >>> --- a/drivers/soc/ti/knav_dma.c >>> +++ b/drivers/soc/ti/knav_dma.c >>> @@ -708,17 +708,13 @@ static int knav_dma_probe(struct platform_device *pdev) >>> struct device_node *node = pdev->dev.of_node; >>> int ret = 0; >>> >>> - if (!node) { >>> - dev_err(&pdev->dev, "could not find device info\n"); >>> - return -EINVAL; >>> - } >>> + if (!node) >>> + return dev_err_probe(&pdev->dev, -EINVAL, "could not find device info\n"); >>> >>> kdev = devm_kzalloc(dev, >>> sizeof(struct knav_dma_pool_device), GFP_KERNEL); >>> - if (!kdev) { >>> - dev_err(dev, "could not allocate driver mem\n"); >>> - return -ENOMEM; >>> - } >>> + if (!kdev) >>> + return dev_err_probe(dev, -ENOMEM, "could not allocate driver mem\n"); >> >> These make no sense to me :( -> just using dev_err_probe when there is >> no chance of -EPROBE_DEFER ? > > I noticed a change in dev_err_probe() this year, which is described in > this patch: > > For an out-of-memory error there should be no additional output. Adapt > dev_err_probe() to not emit the error message when err is -ENOMEM. > This simplifies handling errors that might among others be -ENOMEM. > > > And the comment of dev_err_probe() said below: > > * Using this helper in your probe function is totally fine even if @err Fine but not much useful and at the same time huge churn from @vivo.com. Best regards, Krzysztof