linux-kernel - [PATCH AUTOSEL 4.4 08/10] intel_th: Consistency and off-by-one fix

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Date:   Sun,  2 May 2021 10:06:20 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Pavel Machek <pavel@....cz>, Pavel Machek <pavel@...x.de>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.4 08/10] intel_th: Consistency and off-by-one fix

From: Pavel Machek <pavel@....cz>

[ Upstream commit 18ffbc47d45a1489b664dd68fb3a7610a6e1dea3 ]

Consistently use "< ... +1" in for loops.

Fix of-by-one in for_each_set_bit().

Signed-off-by: Pavel Machek <pavel@...x.de>
Signed-off-by: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Link: https://lore.kernel.org/lkml/20190724095841.GA6952@amd/
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Link: https://lore.kernel.org/r/20210414171251.14672-6-alexander.shishkin@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/hwtracing/intel_th/gth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/hwtracing/intel_th/gth.c b/drivers/hwtracing/intel_th/gth.c
index 189eb6269971..e585b29ce738 100644
--- a/drivers/hwtracing/intel_th/gth.c
+++ b/drivers/hwtracing/intel_th/gth.c
@@ -485,7 +485,7 @@ static void intel_th_gth_disable(struct intel_th_device *thdev,
 	output->active = false;
 
 	for_each_set_bit(master, gth->output[output->port].master,
-			 TH_CONFIGURABLE_MASTERS) {
+			 TH_CONFIGURABLE_MASTERS + 1) {
 		gth_master_set(gth, master, -1);
 	}
 	spin_unlock(&gth->gth_lock);
@@ -597,7 +597,7 @@ static void intel_th_gth_unassign(struct intel_th_device *thdev,
 	othdev->output.port = -1;
 	othdev->output.active = false;
 	gth->output[port].output = NULL;
-	for (master = 0; master <= TH_CONFIGURABLE_MASTERS; master++)
+	for (master = 0; master < TH_CONFIGURABLE_MASTERS + 1; master++)
 		if (gth->master[master] == port)
 			gth->master[master] = -1;
 	spin_unlock(&gth->gth_lock);
-- 
2.30.2