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Tue, 17 May 2022 02:18:56 -0700 (PDT) Message-ID: Date: Tue, 17 May 2022 11:18:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH v3 3/5] soc: mediatek: pwrap: Move and check return value of platform_get_irq() Content-Language: en-US To: AngeloGioacchino Del Regno Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, nfraprado@collabora.com, rex-bc.chen@mediatek.com, zhiyong.tao@mediatek.com References: <20220516124659.69484-1-angelogioacchino.delregno@collabora.com> <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> From: Matthias Brugger In-Reply-To: <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220517_021859_200363_1A7BEED7 X-CRM114-Status: GOOD ( 23.31 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org CgpPbiAxNi8wNS8yMDIyIDE0OjQ2LCBBbmdlbG9HaW9hY2NoaW5vIERlbCBSZWdubyB3cm90ZToK PiBNb3ZlIHRoZSBjYWxsIHRvIHBsYXRmb3JtX2dldF9pcnEoKSBlYXJsaWVyIGluIHRoZSBwcm9i ZSBmdW5jdGlvbgo+IGFuZCBjaGVjayBmb3IgaXRzIHJldHVybiB2YWx1ZTogaWYgbm8gaW50ZXJy dXB0IGlzIHNwZWNpZmllZCwgaXQKPiB3b3VsZG4ndCBtYWtlIHNlbnNlIHRvIHRyeSB0byBjYWxs IGRldm1fcmVxdWVzdF9pcnEoKSBzbywgaW4gdGhhdAo+IGNhc2UsIHdlIGNhbiBzaW1wbHkgcmV0 dXJuIGVhcmx5Lgo+IAo+IE1vdmluZyB0aGUgcGxhdGZvcm1fZ2V0X2lycSgpIGNhbGwgYWxzbyBt YWtlcyBpdCBwb3NzaWJsZSB0byB1c2UKPiBvbmUgbGVzcyBnb3RvLCBhcyBjbG9ja3MgYXJlbid0 IHJlcXVpcmVkIGF0IHRoYXQgc3RhZ2UuCj4gCj4gU2lnbmVkLW9mZi1ieTogQW5nZWxvR2lvYWNj aGlubyBEZWwgUmVnbm8gPGFuZ2Vsb2dpb2FjY2hpbm8uZGVscmVnbm9AY29sbGFib3JhLmNvbT4K PiBSZXZpZXdlZC1ieTogTsOtY29sYXMgRi4gUi4gQS4gUHJhZG8gPG5mcmFwcmFkb0Bjb2xsYWJv cmEuY29tPgo+IFRlc3RlZC1ieTogTsOtY29sYXMgRi4gUi4gQS4gUHJhZG8gPG5mcmFwcmFkb0Bj b2xsYWJvcmEuY29tPgo+IC0tLQo+ICAgZHJpdmVycy9zb2MvbWVkaWF0ZWsvbXRrLXBtaWMtd3Jh cC5jIHwgNSArKysrLQo+ICAgMSBmaWxlIGNoYW5nZWQsIDQgaW5zZXJ0aW9ucygrKSwgMSBkZWxl dGlvbigtKQo+IAo+IGRpZmYgLS1naXQgYS9kcml2ZXJzL3NvYy9tZWRpYXRlay9tdGstcG1pYy13 cmFwLmMgYi9kcml2ZXJzL3NvYy9tZWRpYXRlay9tdGstcG1pYy13cmFwLmMKPiBpbmRleCA4NTI1 MTQzNjZmMWYuLjMzMmNiY2FiYzI5OSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL3NvYy9tZWRpYXRl ay9tdGstcG1pYy13cmFwLmMKPiArKysgYi9kcml2ZXJzL3NvYy9tZWRpYXRlay9tdGstcG1pYy13 cmFwLmMKPiBAQCAtMjIwNCw2ICsyMjA0LDEwIEBAIHN0YXRpYyBpbnQgcHdyYXBfcHJvYmUoc3Ry dWN0IHBsYXRmb3JtX2RldmljZSAqcGRldikKPiAgIAlpZiAoIXdycCkKPiAgIAkJcmV0dXJuIC1F Tk9NRU07Cj4gICAKPiArCWlycSA9IHBsYXRmb3JtX2dldF9pcnEocGRldiwgMCk7Cj4gKwlpZiAo aXJxIDwgMCkKPiArCQlyZXR1cm4gaXJxOwo+ICsKPiAgIAlwbGF0Zm9ybV9zZXRfZHJ2ZGF0YShw ZGV2LCB3cnApOwo+ICAgCj4gICAJd3JwLT5tYXN0ZXIgPSBvZl9kZXZpY2VfZ2V0X21hdGNoX2Rh dGEoJnBkZXYtPmRldik7Cj4gQEAgLTIzMTYsNyArMjMyMCw2IEBAIHN0YXRpYyBpbnQgcHdyYXBf cHJvYmUoc3RydWN0IHBsYXRmb3JtX2RldmljZSAqcGRldikKPiAgIAlpZiAoSEFTX0NBUCh3cnAt Pm1hc3Rlci0+Y2FwcywgUFdSQVBfQ0FQX0lOVDFfRU4pKQo+ICAgCQlwd3JhcF93cml0ZWwod3Jw LCB3cnAtPm1hc3Rlci0+aW50MV9lbl9hbGwsIFBXUkFQX0lOVDFfRU4pOwo+ICAgCj4gLQlpcnEg PSBwbGF0Zm9ybV9nZXRfaXJxKHBkZXYsIDApOwoKRm9yIGJldHRlciByZWFkYWJpbGl0eSBvZiB0 aGUgY29kZSBJJ2QgcHJlZmVyIHRvIGtlZXAgcGxhdGZvcm1fZ2V0X2lycSBuZXh0IHRvIApkZXZt X3JlcXVlc3RfaXJxLiBJIHVuZGVyc3RhbmQgdGhhdCB5b3UgZGlkIHRoaXMgY2hhbmdlIHNvIHRo YXQgeW91IGRvbid0IGhhdmUgCnRvIGNvZGUKaWYgKGlycSA8IDApIHsKICAgICByZXQgPSBpcnE7 CiAgICAgZ290byBlcnJfb3V0MjsKfQoKT3IgZG8gSSBtaXNzIHNvbWV0aGluZz8KClJlZ2FyZHMs Ck1hdHRoaWFzCgo+ICAgCXJldCA9IGRldm1fcmVxdWVzdF9pcnEod3JwLT5kZXYsIGlycSwgcHdy YXBfaW50ZXJydXB0LAo+ICAgCQkJICAgICAgIElSUUZfVFJJR0dFUl9ISUdILAo+ICAgCQkJICAg ICAgICJtdC1wbWljLXB3cmFwIiwgd3JwKTsKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fCkxpbnV4LW1lZGlhdGVrIG1haWxpbmcgbGlzdApMaW51eC1tZWRp YXRla0BsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21haWxt YW4vbGlzdGluZm8vbGludXgtbWVkaWF0ZWsK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EEE78C433EF for ; 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Tue, 17 May 2022 02:18:56 -0700 (PDT) Message-ID: Date: Tue, 17 May 2022 11:18:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH v3 3/5] soc: mediatek: pwrap: Move and check return value of platform_get_irq() Content-Language: en-US To: AngeloGioacchino Del Regno Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, nfraprado@collabora.com, rex-bc.chen@mediatek.com, zhiyong.tao@mediatek.com References: <20220516124659.69484-1-angelogioacchino.delregno@collabora.com> <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> From: Matthias Brugger In-Reply-To: <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220517_021859_200363_1A7BEED7 X-CRM114-Status: GOOD ( 23.31 ) 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: , Content-Transfer-Encoding: base64 Content-Type: text/plain; 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Tue, 17 May 2022 02:18:56 -0700 (PDT) Message-ID: Date: Tue, 17 May 2022 11:18:55 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.1 Subject: Re: [PATCH v3 3/5] soc: mediatek: pwrap: Move and check return value of platform_get_irq() Content-Language: en-US To: AngeloGioacchino Del Regno Cc: linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, nfraprado@collabora.com, rex-bc.chen@mediatek.com, zhiyong.tao@mediatek.com References: <20220516124659.69484-1-angelogioacchino.delregno@collabora.com> <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> From: Matthias Brugger In-Reply-To: <20220516124659.69484-4-angelogioacchino.delregno@collabora.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16/05/2022 14:46, AngeloGioacchino Del Regno wrote: > Move the call to platform_get_irq() earlier in the probe function > and check for its return value: if no interrupt is specified, it > wouldn't make sense to try to call devm_request_irq() so, in that > case, we can simply return early. > > Moving the platform_get_irq() call also makes it possible to use > one less goto, as clocks aren't required at that stage. > > Signed-off-by: AngeloGioacchino Del Regno > Reviewed-by: Nícolas F. R. A. Prado > Tested-by: Nícolas F. R. A. Prado > --- > drivers/soc/mediatek/mtk-pmic-wrap.c | 5 ++++- > 1 file changed, 4 insertions(+), 1 deletion(-) > > diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c > index 852514366f1f..332cbcabc299 100644 > --- a/drivers/soc/mediatek/mtk-pmic-wrap.c > +++ b/drivers/soc/mediatek/mtk-pmic-wrap.c > @@ -2204,6 +2204,10 @@ static int pwrap_probe(struct platform_device *pdev) > if (!wrp) > return -ENOMEM; > > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return irq; > + > platform_set_drvdata(pdev, wrp); > > wrp->master = of_device_get_match_data(&pdev->dev); > @@ -2316,7 +2320,6 @@ static int pwrap_probe(struct platform_device *pdev) > if (HAS_CAP(wrp->master->caps, PWRAP_CAP_INT1_EN)) > pwrap_writel(wrp, wrp->master->int1_en_all, PWRAP_INT1_EN); > > - irq = platform_get_irq(pdev, 0); For better readability of the code I'd prefer to keep platform_get_irq next to devm_request_irq. I understand that you did this change so that you don't have to code if (irq < 0) { ret = irq; goto err_out2; } Or do I miss something? Regards, Matthias > ret = devm_request_irq(wrp->dev, irq, pwrap_interrupt, > IRQF_TRIGGER_HIGH, > "mt-pmic-pwrap", wrp);