linux-kernel - [PATCH v2 02/15] ethernet/839: use new module_firmware

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Date:   Fri, 15 May 2020 21:28:33 +0000
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     jeyu@...nel.org
Cc:     akpm@...ux-foundation.org, arnd@...db.de, rostedt@...dmis.org,
        mingo@...hat.com, aquini@...hat.com, cai@....pw, dyoung@...hat.com,
        bhe@...hat.com, peterz@...radead.org, tglx@...utronix.de,
        gpiccoli@...onical.com, pmladek@...e.com, tiwai@...e.de,
        schlad@...e.de, andriy.shevchenko@...ux.intel.com,
        keescook@...omium.org, daniel.vetter@...ll.ch, will@...nel.org,
        mchehab+samsung@...nel.org, kvalo@...eaurora.org,
        davem@...emloft.net, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, Luis Chamberlain <mcgrof@...nel.org>,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Shannon Nelson <snelson@...sando.io>,
        Jakub Kicinski <kuba@...nel.org>,
        Heiner Kallweit <hkallweit1@...il.com>
Subject: [PATCH v2 02/15] ethernet/839: use new module_firmware_crashed()

This makes use of the new module_firmware_crashed() to help
annotate when firmware for device drivers crash. When firmware
crashes devices can sometimes become unresponsive, and recovery
sometimes requires a driver unload / reload and in the worst cases
a reboot.

Using a taint flag allows us to annotate when this happens clearly.

Cc: "Michael S. Tsirkin" <mst@...hat.com>
Cc: Shannon Nelson <snelson@...sando.io>
Cc: Jakub Kicinski <kuba@...nel.org>
Cc: Heiner Kallweit <hkallweit1@...il.com>
Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/net/ethernet/8390/axnet_cs.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/8390/axnet_cs.c b/drivers/net/ethernet/8390/axnet_cs.c
index aeae7966a082..8ad0200db8e9 100644
--- a/drivers/net/ethernet/8390/axnet_cs.c
+++ b/drivers/net/ethernet/8390/axnet_cs.c
@@ -1358,9 +1358,11 @@ static void ei_receive(struct net_device *dev)
 		 */
 		if ((netif_msg_rx_err(ei_local)) &&
 		    this_frame != ei_local->current_page &&
-		    (this_frame != 0x0 || rxing_page != 0xFF))
+		    (this_frame != 0x0 || rxing_page != 0xFF)) {
+			module_firmware_crashed();
 			netdev_err(dev, "mismatched read page pointers %2x vs %2x\n",
 				   this_frame, ei_local->current_page);
+		}
 		
 		if (this_frame == rxing_page)	/* Read all the frames? */
 			break;				/* Done for now */
-- 
2.26.2