From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e17.ny.us.ibm.com (e17.ny.us.ibm.com [129.33.205.207]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 29C381A2E65 for ; Thu, 17 Sep 2015 07:31:03 +1000 (AEST) Received: from /spool/local by e17.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 16 Sep 2015 17:31:01 -0400 Received: from b01cxnp22034.gho.pok.ibm.com (b01cxnp22034.gho.pok.ibm.com [9.57.198.24]) by d01dlp01.pok.ibm.com (Postfix) with ESMTP id E610C38C803B for ; Wed, 16 Sep 2015 17:30:59 -0400 (EDT) Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by b01cxnp22034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t8GLUxDT45809898 for ; Wed, 16 Sep 2015 21:30:59 GMT Received: from d01av02.pok.ibm.com (localhost [127.0.0.1]) by d01av02.pok.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t8GLUvC2014549 for ; Wed, 16 Sep 2015 17:30:58 -0400 From: "Matthew R. Ochs" To: linux-scsi@vger.kernel.org, James Bottomley , "Nicholas A. Bellinger" , Brian King , Ian Munsie , Daniel Axtens , Andrew Donnellan Cc: Michael Neuling , linuxppc-dev@lists.ozlabs.org, "Manoj N. Kumar" Subject: [PATCH v2 17/30] cxlflash: Fix async interrupt bypass logic Date: Wed, 16 Sep 2015 16:30:34 -0500 Message-Id: <1442439034-49856-1-git-send-email-mrochs@linux.vnet.ibm.com> In-Reply-To: <1442438635-49044-1-git-send-email-mrochs@linux.vnet.ibm.com> References: <1442438635-49044-1-git-send-email-mrochs@linux.vnet.ibm.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , A bug was introduced earlier in the development cycle when cleaning up logic statements. Instead of skipping bits that are not set, set bits are skipped, causing async interrupts to not be handled correctly. To fix, simply add back in the proper evaluation for an unset bit. Signed-off-by: Matthew R. Ochs Signed-off-by: Manoj N. Kumar --- drivers/scsi/cxlflash/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/scsi/cxlflash/main.c b/drivers/scsi/cxlflash/main.c index 39ad7a3..74eb742 100644 --- a/drivers/scsi/cxlflash/main.c +++ b/drivers/scsi/cxlflash/main.c @@ -1326,7 +1326,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data) /* check each bit that is on */ for (i = 0; reg_unmasked; i++, reg_unmasked = (reg_unmasked >> 1)) { info = find_ainfo(1ULL << i); - if ((reg_unmasked & 0x1) || !info) + if (((reg_unmasked & 0x1) == 0) || !info) continue; port = info->port; -- 2.1.0