linux-kernel - [PATCH] staging: octeon: Add prevent NAPI from scheduling

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Date:	Mon, 20 Aug 2012 14:41:22 +0400
From:	Marina Makienko <makienko@...ras.ru>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	Marina Makienko <makienko@...ras.ru>,
	David Daney <david.daney@...ium.com>,
	Ralf Baechle <ralf@...ux-mips.org>,
	"Roy.Li" <rongqing.li@...driver.com>, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, ldv-project@...ras.ru
Subject: [PATCH] staging: octeon: Add prevent NAPI from scheduling

Code inspection shows that this can
only be triggered by calling napi_enable() without
napi_disable().

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Marina Makienko <makienko@...ras.ru>
---
 drivers/staging/octeon/ethernet-rx.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/octeon/ethernet-rx.c b/drivers/staging/octeon/ethernet-rx.c
index 34afc16..db81613 100644
--- a/drivers/staging/octeon/ethernet-rx.c
+++ b/drivers/staging/octeon/ethernet-rx.c
@@ -560,4 +560,5 @@ void cvm_oct_rx_shutdown(void)
 	/* Shutdown all of the NAPIs */
 	for_each_possible_cpu(i)
 		netif_napi_del(&cvm_oct_napi[i].napi);
+		napi_disable(&cvm_oct_napi[i].napi);
 }
-- 
1.7.7

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