linux-renesas-soc.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Biju Das <biju.das@bp.renesas.com>
To: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Biju Das <biju.das@bp.renesas.com>,
	Simon Horman <horms+renesas@verge.net.au>,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	Wolfram Sang <wsa+renesas@sang-engineering.com>,
	Simon Horman <horms@verge.net.au>,
	Geert Uytterhoeven <geert+renesas@glider.be>,
	Chris Paterson <Chris.Paterson2@renesas.com>,
	Fabrizio Castro <fabrizio.castro@bp.renesas.com>,
	linux-renesas-soc@vger.kernel.org
Subject: [PATCH v2] phy: renesas: phy-rcar-gen2: Fix the array off by one warning
Date: Thu, 16 May 2019 14:22:03 +0100	[thread overview]
Message-ID: <1558012923-29081-1-git-send-email-biju.das@bp.renesas.com> (raw)

Fix the below smatch warning by adding variable check rather than the
hardcoded value.
warn: array off by one? 'data->select_value[channel_num]'

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
V1-->V2 
  * Incorporated Geert's review comments.
    (https://patchwork.kernel.org/patch/10944837/)
---
 drivers/phy/renesas/phy-rcar-gen2.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/renesas/phy-rcar-gen2.c b/drivers/phy/renesas/phy-rcar-gen2.c
index 8dc5710..8dbdc5b 100644
--- a/drivers/phy/renesas/phy-rcar-gen2.c
+++ b/drivers/phy/renesas/phy-rcar-gen2.c
@@ -71,6 +71,7 @@ struct rcar_gen2_phy_driver {
 struct rcar_gen2_phy_data {
 	const struct phy_ops *gen2_phy_ops;
 	const u32 (*select_value)[PHYS_PER_CHANNEL];
+	const u32 num_channels;
 };
 
 static int rcar_gen2_phy_init(struct phy *p)
@@ -271,11 +272,13 @@ static const u32 usb20_select_value[][PHYS_PER_CHANNEL] = {
 static const struct rcar_gen2_phy_data rcar_gen2_usb_phy_data = {
 	.gen2_phy_ops = &rcar_gen2_phy_ops,
 	.select_value = pci_select_value,
+	.num_channels = ARRAY_SIZE(pci_select_value),
 };
 
 static const struct rcar_gen2_phy_data rz_g1c_usb_phy_data = {
 	.gen2_phy_ops = &rz_g1c_phy_ops,
 	.select_value = usb20_select_value,
+	.num_channels = ARRAY_SIZE(usb20_select_value),
 };
 
 static const struct of_device_id rcar_gen2_phy_match_table[] = {
@@ -389,7 +392,7 @@ static int rcar_gen2_phy_probe(struct platform_device *pdev)
 		channel->selected_phy = -1;
 
 		error = of_property_read_u32(np, "reg", &channel_num);
-		if (error || channel_num > 2) {
+		if (error || channel_num >= data->num_channels) {
 			dev_err(dev, "Invalid \"reg\" property\n");
 			return error;
 		}
-- 
2.7.4


             reply	other threads:[~2019-05-16 13:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-16 13:22 Biju Das [this message]
2019-05-16 13:51 ` [PATCH v2] phy: renesas: phy-rcar-gen2: Fix the array off by one warning Wolfram Sang
2019-05-17 13:25 ` Ulrich Hecht
2019-05-21  7:03 ` Yoshihiro Shimoda
2019-10-01  6:39   ` Biju Das
2019-10-09 12:54     ` Kishon Vijay Abraham I
2019-10-09 13:01       ` Biju Das

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1558012923-29081-1-git-send-email-biju.das@bp.renesas.com \
    --to=biju.das@bp.renesas.com \
    --cc=Chris.Paterson2@renesas.com \
    --cc=fabrizio.castro@bp.renesas.com \
    --cc=geert+renesas@glider.be \
    --cc=horms+renesas@verge.net.au \
    --cc=horms@verge.net.au \
    --cc=kishon@ti.com \
    --cc=linux-renesas-soc@vger.kernel.org \
    --cc=wsa+renesas@sang-engineering.com \
    --cc=yoshihiro.shimoda.uh@renesas.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).