linux-kernel - [PATCH v2 3/3] usb: typec: Use sysfs_emit

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Message-ID: <20230623151036.3955013-4-kyletso@google.com>
Date:   Fri, 23 Jun 2023 23:10:36 +0800
From:   Kyle Tso <kyletso@...gle.com>
To:     heikki.krogerus@...ux.intel.com, gregkh@...uxfoundation.org
Cc:     badhri@...gle.com, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org, Kyle Tso <kyletso@...gle.com>,
        stable@...r.kernel.org
Subject: [PATCH v2 3/3] usb: typec: Use sysfs_emit_at when concatenating the string

The buffer address used in sysfs_emit should be aligned to PAGE_SIZE.
Use sysfs_emit_at instead to offset the buffer.

Fixes: a7cff92f0635 ("usb: typec: USB Power Delivery helpers for ports and partners")
Cc: stable@...r.kernel.org
Signed-off-by: Kyle Tso <kyletso@...gle.com>
---
Update v2:
- Add "Cc: stable@...r.kernel.org"

drivers/usb/typec/class.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index e7312295f8c9..9c1dbf3c00e0 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1288,9 +1288,9 @@ static ssize_t select_usb_power_delivery_show(struct device *dev,
 
 	for (i = 0; pds[i]; i++) {
 		if (pds[i] == port->pd)
-			ret += sysfs_emit(buf + ret, "[%s] ", dev_name(&pds[i]->dev));
+			ret += sysfs_emit_at(buf, ret, "[%s] ", dev_name(&pds[i]->dev));
 		else
-			ret += sysfs_emit(buf + ret, "%s ", dev_name(&pds[i]->dev));
+			ret += sysfs_emit_at(buf, ret, "%s ", dev_name(&pds[i]->dev));
 	}
 
 	buf[ret - 1] = '\n';
-- 
2.41.0.162.gfafddb0af9-goog