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[85.29.124.88]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-52bb433c894sm251499e87.256.2024.06.06.10.27.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Jun 2024 10:27:10 -0700 (PDT) Message-ID: <0a77e955-e5a6-4a0e-8c1d-8b2ebd0d1eec@gmail.com> Date: Thu, 6 Jun 2024 20:30:43 +0300 Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next] dmaengine: ti: k3-udma-glue: clean up return in k3_udma_glue_rx_get_irq() To: Dan Carpenter Cc: Vinod Koul , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , MD Danish Anwar , Roger Quadros , Grygorii Strashko , Julien Panis , Chintan Vankar , Diogo Ivo , Simon Horman , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-janitors@vger.kernel.org References: <2f28f769-6929-4fc2-b875-00bf1d8bf3c4@kili.mountain> Content-Language: en-US From: =?UTF-8?Q?P=C3=A9ter_Ujfalusi?= In-Reply-To: <2f28f769-6929-4fc2-b875-00bf1d8bf3c4@kili.mountain> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 6/6/24 5:23 PM, Dan Carpenter wrote: > Currently the k3_udma_glue_rx_get_irq() function returns either negative > error codes or zero on error. Generally, in the kernel, zero means > success so this be confusing and has caused bugs in the past. Also the > "tx" version of this function only returns negative error codes. Let's > clean this "rx" function so both functions match. > > This patch has no effect on runtime. Acked-by: Peter Ujfalusi > > Signed-off-by: Dan Carpenter > --- > drivers/dma/ti/k3-udma-glue.c | 3 +++ > drivers/net/ethernet/ti/am65-cpsw-nuss.c | 4 ++-- > drivers/net/ethernet/ti/icssg/icssg_common.c | 4 +--- > 3 files changed, 6 insertions(+), 5 deletions(-) > > diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c > index c9b93055dc9d..b96b448a0e69 100644 > --- a/drivers/dma/ti/k3-udma-glue.c > +++ b/drivers/dma/ti/k3-udma-glue.c > @@ -1531,6 +1531,9 @@ int k3_udma_glue_rx_get_irq(struct k3_udma_glue_rx_channel *rx_chn, > flow->virq = k3_ringacc_get_ring_irq_num(flow->ringrx); > } > > + if (!flow->virq) > + return -ENXIO; > + > return flow->virq; > } > EXPORT_SYMBOL_GPL(k3_udma_glue_rx_get_irq); > diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c > index 4e50b3792888..8c26acc9cde1 100644 > --- a/drivers/net/ethernet/ti/am65-cpsw-nuss.c > +++ b/drivers/net/ethernet/ti/am65-cpsw-nuss.c > @@ -2424,10 +2424,10 @@ static int am65_cpsw_nuss_init_rx_chns(struct am65_cpsw_common *common) > > rx_chn->irq = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); > > - if (rx_chn->irq <= 0) { > + if (rx_chn->irq < 0) { > dev_err(dev, "Failed to get rx dma irq %d\n", > rx_chn->irq); > - ret = -ENXIO; > + ret = rx_chn->irq; > goto err; > } > } > diff --git a/drivers/net/ethernet/ti/icssg/icssg_common.c b/drivers/net/ethernet/ti/icssg/icssg_common.c > index 088ab8076db4..cac7863c5cb2 100644 > --- a/drivers/net/ethernet/ti/icssg/icssg_common.c > +++ b/drivers/net/ethernet/ti/icssg/icssg_common.c > @@ -440,9 +440,7 @@ int prueth_init_rx_chns(struct prueth_emac *emac, > fdqring_id = k3_udma_glue_rx_flow_get_fdq_id(rx_chn->rx_chn, > i); > ret = k3_udma_glue_rx_get_irq(rx_chn->rx_chn, i); > - if (ret <= 0) { > - if (!ret) > - ret = -ENXIO; > + if (ret < 0) { > netdev_err(ndev, "Failed to get rx dma irq"); > goto fail; > } -- Péter 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 C32BCC27C54 for ; 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[85.29.124.88]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-52bb433c894sm251499e87.256.2024.06.06.10.27.10 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 06 Jun 2024 10:27:10 -0700 (PDT) Message-ID: <0a77e955-e5a6-4a0e-8c1d-8b2ebd0d1eec@gmail.com> Date: Thu, 6 Jun 2024 20:30:43 +0300 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH net-next] dmaengine: ti: k3-udma-glue: clean up return in k3_udma_glue_rx_get_irq() To: Dan Carpenter Cc: Vinod Koul , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , MD Danish Anwar , Roger Quadros , Grygorii Strashko , Julien Panis , Chintan Vankar , Diogo Ivo , Simon Horman , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kernel-janitors@vger.kernel.org References: <2f28f769-6929-4fc2-b875-00bf1d8bf3c4@kili.mountain> Content-Language: en-US From: =?UTF-8?Q?P=C3=A9ter_Ujfalusi?= In-Reply-To: <2f28f769-6929-4fc2-b875-00bf1d8bf3c4@kili.mountain> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240606_102716_298047_83A833DE X-CRM114-Status: GOOD ( 18.71 ) 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-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org CgpPbiA2LzYvMjQgNToyMyBQTSwgRGFuIENhcnBlbnRlciB3cm90ZToKPiBDdXJyZW50bHkgdGhl IGszX3VkbWFfZ2x1ZV9yeF9nZXRfaXJxKCkgZnVuY3Rpb24gcmV0dXJucyBlaXRoZXIgbmVnYXRp dmUKPiBlcnJvciBjb2RlcyBvciB6ZXJvIG9uIGVycm9yLiAgR2VuZXJhbGx5LCBpbiB0aGUga2Vy bmVsLCB6ZXJvIG1lYW5zCj4gc3VjY2VzcyBzbyB0aGlzIGJlIGNvbmZ1c2luZyBhbmQgaGFzIGNh dXNlZCBidWdzIGluIHRoZSBwYXN0LiAgQWxzbyB0aGUKPiAidHgiIHZlcnNpb24gb2YgdGhpcyBm dW5jdGlvbiBvbmx5IHJldHVybnMgbmVnYXRpdmUgZXJyb3IgY29kZXMuICBMZXQncwo+IGNsZWFu IHRoaXMgInJ4IiBmdW5jdGlvbiBzbyBib3RoIGZ1bmN0aW9ucyBtYXRjaC4KPiAKPiBUaGlzIHBh dGNoIGhhcyBubyBlZmZlY3Qgb24gcnVudGltZS4KCkFja2VkLWJ5OiBQZXRlciBVamZhbHVzaSA8 cGV0ZXIudWpmYWx1c2lAZ21haWwuY29tPgoKPiAKPiBTaWduZWQtb2ZmLWJ5OiBEYW4gQ2FycGVu dGVyIDxkYW4uY2FycGVudGVyQGxpbmFyby5vcmc+Cj4gLS0tCj4gIGRyaXZlcnMvZG1hL3RpL2sz LXVkbWEtZ2x1ZS5jICAgICAgICAgICAgICAgIHwgMyArKysKPiAgZHJpdmVycy9uZXQvZXRoZXJu ZXQvdGkvYW02NS1jcHN3LW51c3MuYyAgICAgfCA0ICsrLS0KPiAgZHJpdmVycy9uZXQvZXRoZXJu ZXQvdGkvaWNzc2cvaWNzc2dfY29tbW9uLmMgfCA0ICstLS0KPiAgMyBmaWxlcyBjaGFuZ2VkLCA2 IGluc2VydGlvbnMoKyksIDUgZGVsZXRpb25zKC0pCj4gCj4gZGlmZiAtLWdpdCBhL2RyaXZlcnMv ZG1hL3RpL2szLXVkbWEtZ2x1ZS5jIGIvZHJpdmVycy9kbWEvdGkvazMtdWRtYS1nbHVlLmMKPiBp bmRleCBjOWI5MzA1NWRjOWQuLmI5NmI0NDhhMGU2OSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2Rt YS90aS9rMy11ZG1hLWdsdWUuYwo+ICsrKyBiL2RyaXZlcnMvZG1hL3RpL2szLXVkbWEtZ2x1ZS5j Cj4gQEAgLTE1MzEsNiArMTUzMSw5IEBAIGludCBrM191ZG1hX2dsdWVfcnhfZ2V0X2lycShzdHJ1 Y3QgazNfdWRtYV9nbHVlX3J4X2NoYW5uZWwgKnJ4X2NobiwKPiAgCQlmbG93LT52aXJxID0gazNf cmluZ2FjY19nZXRfcmluZ19pcnFfbnVtKGZsb3ctPnJpbmdyeCk7Cj4gIAl9Cj4gIAo+ICsJaWYg KCFmbG93LT52aXJxKQo+ICsJCXJldHVybiAtRU5YSU87Cj4gKwo+ICAJcmV0dXJuIGZsb3ctPnZp cnE7Cj4gIH0KPiAgRVhQT1JUX1NZTUJPTF9HUEwoazNfdWRtYV9nbHVlX3J4X2dldF9pcnEpOwo+ IGRpZmYgLS1naXQgYS9kcml2ZXJzL25ldC9ldGhlcm5ldC90aS9hbTY1LWNwc3ctbnVzcy5jIGIv ZHJpdmVycy9uZXQvZXRoZXJuZXQvdGkvYW02NS1jcHN3LW51c3MuYwo+IGluZGV4IDRlNTBiMzc5 Mjg4OC4uOGMyNmFjYzljZGUxIDEwMDY0NAo+IC0tLSBhL2RyaXZlcnMvbmV0L2V0aGVybmV0L3Rp L2FtNjUtY3Bzdy1udXNzLmMKPiArKysgYi9kcml2ZXJzL25ldC9ldGhlcm5ldC90aS9hbTY1LWNw c3ctbnVzcy5jCj4gQEAgLTI0MjQsMTAgKzI0MjQsMTAgQEAgc3RhdGljIGludCBhbTY1X2Nwc3df bnVzc19pbml0X3J4X2NobnMoc3RydWN0IGFtNjVfY3Bzd19jb21tb24gKmNvbW1vbikKPiAgCj4g IAkJcnhfY2huLT5pcnEgPSBrM191ZG1hX2dsdWVfcnhfZ2V0X2lycShyeF9jaG4tPnJ4X2Nobiwg aSk7Cj4gIAo+IC0JCWlmIChyeF9jaG4tPmlycSA8PSAwKSB7Cj4gKwkJaWYgKHJ4X2Nobi0+aXJx IDwgMCkgewo+ICAJCQlkZXZfZXJyKGRldiwgIkZhaWxlZCB0byBnZXQgcnggZG1hIGlycSAlZFxu IiwKPiAgCQkJCXJ4X2Nobi0+aXJxKTsKPiAtCQkJcmV0ID0gLUVOWElPOwo+ICsJCQlyZXQgPSBy eF9jaG4tPmlycTsKPiAgCQkJZ290byBlcnI7Cj4gIAkJfQo+ICAJfQo+IGRpZmYgLS1naXQgYS9k cml2ZXJzL25ldC9ldGhlcm5ldC90aS9pY3NzZy9pY3NzZ19jb21tb24uYyBiL2RyaXZlcnMvbmV0 L2V0aGVybmV0L3RpL2ljc3NnL2ljc3NnX2NvbW1vbi5jCj4gaW5kZXggMDg4YWI4MDc2ZGI0Li5j YWM3ODYzYzVjYjIgMTAwNjQ0Cj4gLS0tIGEvZHJpdmVycy9uZXQvZXRoZXJuZXQvdGkvaWNzc2cv aWNzc2dfY29tbW9uLmMKPiArKysgYi9kcml2ZXJzL25ldC9ldGhlcm5ldC90aS9pY3NzZy9pY3Nz Z19jb21tb24uYwo+IEBAIC00NDAsOSArNDQwLDcgQEAgaW50IHBydWV0aF9pbml0X3J4X2NobnMo c3RydWN0IHBydWV0aF9lbWFjICplbWFjLAo+ICAJCQlmZHFyaW5nX2lkID0gazNfdWRtYV9nbHVl X3J4X2Zsb3dfZ2V0X2ZkcV9pZChyeF9jaG4tPnJ4X2NobiwKPiAgCQkJCQkJCQkgICAgIGkpOwo+ ICAJCXJldCA9IGszX3VkbWFfZ2x1ZV9yeF9nZXRfaXJxKHJ4X2Nobi0+cnhfY2huLCBpKTsKPiAt CQlpZiAocmV0IDw9IDApIHsKPiAtCQkJaWYgKCFyZXQpCj4gLQkJCQlyZXQgPSAtRU5YSU87Cj4g KwkJaWYgKHJldCA8IDApIHsKPiAgCQkJbmV0ZGV2X2VycihuZGV2LCAiRmFpbGVkIHRvIGdldCBy eCBkbWEgaXJxIik7Cj4gIAkJCWdvdG8gZmFpbDsKPiAgCQl9CgotLSAKUMOpdGVyCgpfX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpsaW51eC1hcm0ta2VybmVs IG1haWxpbmcgbGlzdApsaW51eC1hcm0ta2VybmVsQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDov L2xpc3RzLmluZnJhZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1hcm0ta2VybmVsCg==