linux-kernel - [PATCH 4.19 77/91] drivers/usb/typec/tps6598x.c: fix 4CC cmd write

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Message-Id: <20190712121625.937102695@linuxfoundation.org>
Date:   Fri, 12 Jul 2019 14:19:20 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Subject: [PATCH 4.19 77/91] drivers/usb/typec/tps6598x.c: fix 4CC cmd write

From: Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>

commit 2681795b5e7a5bf336537661010072f4c22cea31 upstream.

Writing 4CC commands with tps6598x_write_4cc() already has
a pointer arg, don't reference it when using as arg to
tps6598x_block_write(). Correcting this enforces the constness
of the pointer to propagate to tps6598x_block_write(), so add
the const qualifier there to avoid the warning.

Fixes: 0a4c005bd171 ("usb: typec: driver for TI TPS6598x USB Power Delivery controllers")
Signed-off-by: Nikolaus Voss <nikolaus.voss@...wensteinmedical.de>
Acked-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Cc: stable <stable@...r.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/typec/tps6598x.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/usb/typec/tps6598x.c
+++ b/drivers/usb/typec/tps6598x.c
@@ -111,7 +111,7 @@ tps6598x_block_read(struct tps6598x *tps
 }
 
 static int tps6598x_block_write(struct tps6598x *tps, u8 reg,
-				void *val, size_t len)
+				const void *val, size_t len)
 {
 	u8 data[TPS_MAX_LEN + 1];
 
@@ -157,7 +157,7 @@ static inline int tps6598x_write64(struc
 static inline int
 tps6598x_write_4cc(struct tps6598x *tps, u8 reg, const char *val)
 {
-	return tps6598x_block_write(tps, reg, &val, sizeof(u32));
+	return tps6598x_block_write(tps, reg, val, 4);
 }
 
 static int tps6598x_read_partner_identity(struct tps6598x *tps)