linux-kernel - [PATCH v10 2/3] pinctrl: qcom: do not reinitialize gpio valid mask

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221014001934.4995-3-mailingradian@gmail.com>
Date:   Thu, 13 Oct 2022 20:19:33 -0400
From:   Richard Acayan <mailingradian@...il.com>
To:     linux-arm-msm@...r.kernel.org
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Richard Acayan <mailingradian@...il.com>,
        Lee Jones <lee@...nel.org>, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v10 2/3] pinctrl: qcom: do not reinitialize gpio valid mask

It may be necessary for some devices to specify reserved gpios in the
device-specific DTS, in addition to the reserved gpios common to all
devices with a given SoC. Remove this bitmap_fill() call so that the
settings applied to the gpio valid mask by DTS are not overridden by
the driver's reserved gpios.

Signed-off-by: Richard Acayan <mailingradian@...il.com>
Reviewed-by: Bjorn Andersson <andersson@...nel.org>
---
 drivers/pinctrl/qcom/pinctrl-msm.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/pinctrl/qcom/pinctrl-msm.c b/drivers/pinctrl/qcom/pinctrl-msm.c
index a2abfe987ab1..c5c9e588fb13 100644
--- a/drivers/pinctrl/qcom/pinctrl-msm.c
+++ b/drivers/pinctrl/qcom/pinctrl-msm.c
@@ -687,9 +687,8 @@ static int msm_gpio_init_valid_mask(struct gpio_chip *gc,
 	const int *reserved = pctrl->soc->reserved_gpios;
 	u16 *tmp;
 
-	/* Driver provided reserved list overrides DT and ACPI */
+	/* Remove driver-provided reserved GPIOs from valid_mask */
 	if (reserved) {
-		bitmap_fill(valid_mask, ngpios);
 		for (i = 0; reserved[i] >= 0; i++) {
 			if (i >= ngpios || reserved[i] >= ngpios) {
 				dev_err(pctrl->dev, "invalid list of reserved GPIOs\n");
-- 
2.38.0