From nobody Mon Feb 9 01:48:24 2026 Received: from sender2-pp-o94.zoho.in (sender2-pp-o94.zoho.in [169.148.134.94]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1D47925B30E; Sat, 20 Dec 2025 10:09:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=169.148.134.94 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766225367; cv=pass; b=VE0iAG/N8GFw7uoXsOAJ48jfn2sbFMW5CBEMnd3WFtgIW6oTTYzOC//zWD3fnzH5ZhhsttolFSKAQITiWgv9qcj+idNp5eSThKCAdbsHbZUdGea0c3xnWRfdZhdKKRTYHVXGlqFJUysdpqQSCKmyXvmTrpBndGvRveRNylaT8yY= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1766225367; c=relaxed/simple; bh=T6aWBzT39qTLvMNKP9hKWThQPSTdagZRXfpb12qxqvo=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=rs5kOstUs85yyKx+L0ZgxlmlI/kvOmMbfPeKJgvVvJys3Uu/RC37EULwLBbpQsLbkaMOGlpLosFTfhvHh4LFKXkd2r7O7WWVkQqcpQRh7ggLTxKN1NTpR1lukwdjAArWkKn2adyn0f69e/sayZZCY4xRilG56w2tbfmeHeTI1Xs= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=zohomail.in; spf=pass smtp.mailfrom=zohomail.in; dkim=pass (1024-bit key) header.d=zohomail.in header.i=preyas17@zohomail.in header.b=DnIAFoY8; arc=pass smtp.client-ip=169.148.134.94 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=zohomail.in Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=zohomail.in Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=zohomail.in header.i=preyas17@zohomail.in header.b="DnIAFoY8" ARC-Seal: i=1; a=rsa-sha256; t=1766225352; cv=none; d=zohomail.in; s=zohoarc; b=S6dUv+xN+oxi1PiJAWP3VtSGLKWYu37bvZPahF1uNd1VehbSlYe9vhHqZVKQud/HdlR0C2rLIRsRhsKPbBcckXNYkQCFlLyyv3ZQQzJyJqWxfHkw+IxT/AmiDux7dgRNbbtmoBEthcOo1y9aE4vmbilfkuYIioSof712ye88wFU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.in; s=zohoarc; t=1766225352; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:MIME-Version:Message-ID:Subject:Subject:To:To:Message-Id:Reply-To; bh=rvtEM/cp3R19JpomKWwe6CGPOEWSj+CfYc4z6EuVXYE=; b=MlaSwzM1xLtsZzTZwsx04WKYsb/UL7EJLU99ikE74NQii9zQfa9xvLirg4El+FA5Tz2aVP+Vu0ieKu9h9bGZsm6jkIgonf+mmAA+/MDznrLvZewGZ7SeYW2wC/TJmNvs3VNdig4JJMNT+rX0qZ/vnqDsxR87D8JixBAMacEX7bM= ARC-Authentication-Results: i=1; mx.zohomail.in; dkim=pass header.i=zohomail.in; spf=pass smtp.mailfrom=preyas17@zohomail.in; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1766225352; s=zoho; d=zohomail.in; i=preyas17@zohomail.in; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:MIME-Version:Content-Transfer-Encoding:Message-Id:Reply-To; bh=rvtEM/cp3R19JpomKWwe6CGPOEWSj+CfYc4z6EuVXYE=; b=DnIAFoY8TIN1ntCJ9+gqkjnFN5S7A5UQU8kyoVv0RjspIEX7Scam5cdKwRBszohM +ue9tmpgOk5oEbsD/p5llC2G58d5hgHlhkzhjPqC//Iqw6Pu4arHGj+Bt3CpMI9A802 vTMKpqR/wdpW2xF1SLPYspXF/MsxHL/XKAH6cffk= Received: by mx.zoho.in with SMTPS id 1766225351870511.8530313020009; Sat, 20 Dec 2025 15:39:11 +0530 (IST) From: Preyas To: marvin24@gmx.de, gregkh@linuxfoundation.org Cc: linux-tegra@vger.kernel.org, linux-staging@lists.linux.dev, linux-kernel@vger.kernel.org, Preyas Sharma Subject: [PATCH] staging: nvec: replace short udelay with usleep_range Date: Sat, 20 Dec 2025 10:08:20 +0000 Message-ID: <20251220100849.41214-1-preyas17@zohomail.in> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMailClient: External Content-Type: text/plain; charset="utf-8" From: Preyas Sharma Hi, Replace udelay(33) with usleep_range(33, 66) in the nvec IRQ handler. This avoids busy-waiting while preserving the required delay for the first byte after a command, and follows guidance for microsecond-range waits. Signed-off-by: Preyas Sharma --- drivers/staging/nvec/nvec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/nvec/nvec.c b/drivers/staging/nvec/nvec.c index 263774e6a78c..6ffe5e8656d1 100644 --- a/drivers/staging/nvec/nvec.c +++ b/drivers/staging/nvec/nvec.c @@ -648,7 +648,7 @@ static irqreturn_t nvec_interrupt(int irq, void *dev) break; case 2: /* first byte after command */ if (status =3D=3D (I2C_SL_IRQ | RNW | RCVD)) { - udelay(33); + usleep_range(33, 66); if (nvec->rx->data[0] !=3D 0x01) { dev_err(nvec->dev, "Read without prior read command\n"); --=20 2.43.0