linux-kernel - [PATCH 14/32] staging: gasket: bail out of reset sequence on device callback error

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Message-Id: <20180717205712.29495-15-toddpoynor@gmail.com>
Date:   Tue, 17 Jul 2018 13:56:54 -0700
From:   Todd Poynor <toddpoynor@...il.com>
To:     Rob Springer <rspringer@...gle.com>,
        John Joseph <jnjoseph@...gle.com>,
        Ben Chan <benchan@...omium.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     Zhongze Hu <frankhu@...omium.org>, Simon Que <sque@...omium.org>,
        Dmitry Torokhov <dtor@...omium.org>,
        Guenter Roeck <groeck@...omium.org>,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
        Todd Poynor <toddpoynor@...gle.com>
Subject: [PATCH 14/32] staging: gasket: bail out of reset sequence on device callback error

From: Todd Poynor <toddpoynor@...gle.com>

If device reset callback returns an error, error out at the gasket
level.

Reported-by: Dmitry Torokhov <dtor@...omium.org>
Signed-off-by: Zhongze Hu <frankhu@...omium.org>
Signed-off-by: Todd Poynor <toddpoynor@...gle.com>
---
 drivers/staging/gasket/gasket_core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/gasket/gasket_core.c b/drivers/staging/gasket/gasket_core.c
index 94e64b900380d..bc3662eafb63d 100644
--- a/drivers/staging/gasket/gasket_core.c
+++ b/drivers/staging/gasket/gasket_core.c
@@ -1875,9 +1875,11 @@ int gasket_reset_nolock(struct gasket_dev *gasket_dev, uint reset_type)
 
 	/* Perform a device reset of the requested type. */
 	ret = driver_desc->device_reset_cb(gasket_dev, reset_type);
-	if (ret)
+	if (ret) {
 		gasket_log_error(
 			gasket_dev, "Device reset cb returned %d.", ret);
+		return ret;
+	}
 
 	/* Reinitialize the page tables and interrupt framework. */
 	for (i = 0; i < driver_desc->num_page_tables; ++i)
-- 
2.18.0.203.gfac676dfb9-goog