From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C968B171AE for ; Mon, 8 May 2023 11:46:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2E6D5C433D2; Mon, 8 May 2023 11:46:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683546414; bh=ZEvsQuva0xNOrYGykGwpQjElS5A1ix7RmXvxqguUFJQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=A2iAtBdg3JSXRt/cBHm8kCrKynlHjxNnrprZ3HQ9PHPqYq8+xIq+DWuEBFq11zQVK nTFAtRC8/sGmTw3IkBQecO3cEQyCqTeTSxiToAAZ1lBMj93uS7iTebmflgLQefaYlJ EB7WTfMr6JbGpT1Ng+KE1E0Mi6Z/QpJkSr8x+ugw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tanmay Shah , Michal Simek , Mathieu Poirier Subject: [PATCH 5.15 353/371] mailbox: zynqmp: Fix IPI isr handling Date: Mon, 8 May 2023 11:49:14 +0200 Message-Id: <20230508094826.145540286@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094811.912279944@linuxfoundation.org> References: <20230508094811.912279944@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Tanmay Shah commit 74ad37a30ffee3643bc34f9ca7225b20a66abaaf upstream. Multiple IPI channels are mapped to same interrupt handler. Current isr implementation handles only one channel per isr. Fix this behavior by checking isr status bit of all child mailbox nodes. Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller") Signed-off-by: Tanmay Shah Acked-by: Michal Simek Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230311012407.1292118-3-tanmay.shah@amd.com Signed-off-by: Mathieu Poirier Signed-off-by: Greg Kroah-Hartman --- drivers/mailbox/zynqmp-ipi-mailbox.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/mailbox/zynqmp-ipi-mailbox.c +++ b/drivers/mailbox/zynqmp-ipi-mailbox.c @@ -152,7 +152,7 @@ static irqreturn_t zynqmp_ipi_interrupt( struct zynqmp_ipi_message *msg; u64 arg0, arg3; struct arm_smccc_res res; - int ret, i; + int ret, i, status = IRQ_NONE; (void)irq; arg0 = SMC_IPI_MAILBOX_STATUS_ENQUIRY; @@ -170,11 +170,11 @@ static irqreturn_t zynqmp_ipi_interrupt( memcpy_fromio(msg->data, mchan->req_buf, msg->len); mbox_chan_received_data(chan, (void *)msg); - return IRQ_HANDLED; + status = IRQ_HANDLED; } } } - return IRQ_NONE; + return status; } /**