linux-kernel - [PATCH v3 7/8] liquidio: use new taint_firmware

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Message-Id: <20200526145815.6415-8-mcgrof@kernel.org>
Date:   Tue, 26 May 2020 14:58:14 +0000
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     jeyu@...nel.org, davem@...emloft.net, kuba@...nel.org
Cc:     michael.chan@...adcom.com, dchickles@...vell.com,
        sburla@...vell.com, fmanlunas@...vell.com, aelior@...vell.com,
        GR-everest-linux-l2@...vell.com, kvalo@...eaurora.org,
        johannes@...solutions.net, 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, derosier@...il.com,
        keescook@...omium.org, daniel.vetter@...ll.ch, will@...nel.org,
        mchehab+samsung@...nel.org, vkoul@...nel.org,
        mchehab+huawei@...nel.org, robh@...nel.org, mhiramat@...nel.org,
        sfr@...b.auug.org.au, linux@...inikbrodowski.net,
        glider@...gle.com, paulmck@...nel.org, elver@...gle.com,
        bauerman@...ux.ibm.com, yamada.masahiro@...ionext.com,
        samitolvanen@...gle.com, yzaikin@...gle.com, dvyukov@...gle.com,
        rdunlap@...radead.org, corbet@....net, dianders@...omium.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, Luis Chamberlain <mcgrof@...nel.org>
Subject: [PATCH v3 7/8] liquidio: use new taint_firmware_crashed()

This makes use of the new taint_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: Derek Chickles <dchickles@...vell.com>
Cc: Satanand Burla <sburla@...vell.com>
Cc: Felix Manlunas <fmanlunas@...vell.com>
Acked-by: Rafael Aquini <aquini@...hat.com>
Reviewed-by: Derek Chickles <dchickles@...vell.com>
Signed-off-by: Luis Chamberlain <mcgrof@...nel.org>
---
 drivers/net/ethernet/cavium/liquidio/lio_main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/cavium/liquidio/lio_main.c b/drivers/net/ethernet/cavium/liquidio/lio_main.c
index 66d31c018c7e..ee1796ea4818 100644
--- a/drivers/net/ethernet/cavium/liquidio/lio_main.c
+++ b/drivers/net/ethernet/cavium/liquidio/lio_main.c
@@ -801,6 +801,7 @@ static int liquidio_watchdog(void *param)
 			continue;
 
 		WRITE_ONCE(oct->cores_crashed, true);
+		taint_firmware_crashed();
 		other_oct = get_other_octeon_device(oct);
 		if (other_oct)
 			WRITE_ONCE(other_oct->cores_crashed, true);
-- 
2.26.2