From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063749; b=NC6WpsjA7NoHqXWmsfRoytcIfFb9X0OFj9cpclaTTDPM/Loil787t2fpz4T7pHco3X48 P9f5dmdQEzx/rVg8swo4st1kGhH09UpSQNIzfoGoJ8LEg/RfqvoG1MG9e2bf/RPak2Lls +xc5NzSKJckHhEMmmc2ws63WBEXSaVx1jtW6uKCX+UdAos1U5UGxXF/Y/tfQtnOGKik3T feOEFk7S0DvNQvTMjfb5+h3ja6kycPMDADHXQMW/rqsi8YCT9qvxZ34pTdKzCfitLxy9S 4kj+NVRM4CwbE9Ov+wubL2UJiH6uEgIEI6bYuR6uzmmppotLcI+EEWR746SANKI3sZg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063749; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=Oq+UCzdBBNtSGqlRY3RAjZlY05lrOVaWgX6UUkWvIcE=; b=y5swF8e351McFqdIutojrxqFaMz2Iig9Z2N6EE7DVKXyK9ND5RxQ8qzmaoc83ppI6J8z xwn9F+QtSYIy1TbcNvAtomEXDo1QlUjs5NYb/EYc/iUaEDJA/ezxIojuC10hLx1+r8xk5 owDle8+NxpfDaUyg1NHeOKskL7uFUKX2mVwHWnnAkTdL6dVbBjYbEiUBjyOENRHD9utHr ykUmaT32fRzZ5h2b4QFDb8mydEWtStHGSvBoBWCrBcC/EC3tw+x8PBaPxXzZMgFpuI0RQ LFQgtGEPPZD0rTktqQ6+s3/qJDtMm+jY3pgOL1UH0+t/l5I+Y6gLJM/cvp00RSFjPpQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=NNSnl27H; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DAD72606D809; Sat, 7 Nov 2026 15:02:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=NNSnl27H Received: by smtp.kernel.org (Postfix) with ESMTPSA id 862131F0089F; Sat, 7 Nov 2026 15:02:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063748; bh=Oq+UCzdBBNtSGqlRY3RAjZlY05lrOVaWgX6UUkWvIcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=NNSnl27Hh4xHV6KLY98S1yFhCmtGUdWwO5cRdV0kVu7tw+DllaTNmKx0/oBLRq7T7 v1eGxu/9bnr87Ef5KbtrmpkJWfSk6XH5RvXdhCIfUZBOk9AstbVrEYAmQfszo88jFj wG1bfmVd1a4Frt3msGCk12mkTQMaG+fTVetIhqgQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Avi Weiss , Thomas Gleixner , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Anup Patel , Sasha Levin Subject: [PATCH 6.18 842/869] irqchip/riscv-imsic: Report successful hardware retrigger Date: Sat, 7 Nov 2026 08:58:44 -0500 Message-ID: <20261107134921.401553880@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Avi Weiss [ Upstream commit a2f482407d33ebe7f12e30d6cf383ffb1c7d709d ] imsic_irq_retrigger() writes to the IMSIC MSI register to retrigger an interrupt, but returns 0. The IRQ core treats zero as failure and may schedule a software resend despite the hardware retrigger. Return 1 after the MSI write to report successful hardware retriggering and prevent the unnecessary software resend. Fixes: 027e125acdba ("irqchip/riscv-imsic: Add device MSI domain support for platform devices") Signed-off-by: Avi Weiss Signed-off-by: Thomas Gleixner Reviewed-by: Björn Töpel Reviewed-by: Anup Patel Cc: stable@vger.kernel.org Link: https://patch.msgid.link/20261026122641.3292904-2-thnkslprpt@gmail.com Signed-off-by: Sasha Levin --- drivers/irqchip/irq-riscv-imsic-platform.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/irqchip/irq-riscv-imsic-platform.c b/drivers/irqchip/irq-riscv-imsic-platform.c index 643c8e4596117..52673ff9edf4a 100644 --- a/drivers/irqchip/irq-riscv-imsic-platform.c +++ b/drivers/irqchip/irq-riscv-imsic-platform.c @@ -61,7 +61,7 @@ static int imsic_irq_retrigger(struct irq_data *d) local = per_cpu_ptr(imsic->global.local, vec->cpu); writel_relaxed(vec->local_id, local->msi_va); - return 0; + return 1; } static void imsic_irq_ack(struct irq_data *d) -- 2.53.0