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: <20241005193029.1929139-3-andriy.shevchenko@linux.intel.com>
Date: Sat,  5 Oct 2024 22:27:05 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org,
	linux-usb@...r.kernel.org
Cc: Andy Shevchenko <andy@...nel.org>,
	Lee Jones <lee@...nel.org>,
	Hans de Goede <hdegoede@...hat.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Zhang Ning <zhangn1985@...look.com>
Subject: [PATCH v2 2/4] mfd: intel_soc_pmic_bxtwc: Use IRQ domain for TMU device

While design wise the idea of converting the driver to use
the hierarchy of the IRQ chips is correct, the implementation
has (inherited) flaws. This was unveiled when platform_get_irq()
had started WARN() on IRQ 0 that is supposed to be a Linux
IRQ number (also known as vIRQ).

Rework the driver to respect IRQ domain when creating each MFD
device separately, as the domain is not the same for all of them.

Fixes: 957ae5098185 ("platform/x86: Add Whiskey Cove PMIC TMU support")
Fixes: 57129044f504 ("mfd: intel_soc_pmic_bxtwc: Use chained IRQs for second level IRQ chips")
Reported-by: Zhang Ning <zhangn1985@...look.com>
Closes: https://lore.kernel.org/r/TY2PR01MB3322FEDCDC048B7D3794F922CDBA2@TY2PR01MB3322.jpnprd01.prod.outlook.com
Tested-by: Zhang Ning <zhangn1985@...look.com>
Acked-by: Hans de Goede <hdegoede@...hat.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/mfd/intel_soc_pmic_bxtwc.c     | 31 ++++++++++++++------------
 drivers/platform/x86/intel/bxtwc_tmu.c | 22 +++++-------------
 2 files changed, 23 insertions(+), 30 deletions(-)

diff --git a/drivers/mfd/intel_soc_pmic_bxtwc.c b/drivers/mfd/intel_soc_pmic_bxtwc.c
index d72995a9e820..628108dcf545 100644
--- a/drivers/mfd/intel_soc_pmic_bxtwc.c
+++ b/drivers/mfd/intel_soc_pmic_bxtwc.c
@@ -245,12 +245,6 @@ static struct mfd_cell bxt_wc_dev[] = {
 		.num_resources = ARRAY_SIZE(bcu_resources),
 		.resources = bcu_resources,
 	},
-	{
-		.name = "bxt_wcove_tmu",
-		.num_resources = ARRAY_SIZE(tmu_resources),
-		.resources = tmu_resources,
-	},
-
 	{
 		.name = "bxt_wcove_gpio",
 		.num_resources = ARRAY_SIZE(gpio_resources),
@@ -261,6 +255,14 @@ static struct mfd_cell bxt_wc_dev[] = {
 	},
 };
 
+static const struct mfd_cell bxt_wc_tmu_dev[] = {
+	{
+		.name = "bxt_wcove_tmu",
+		.num_resources = ARRAY_SIZE(tmu_resources),
+		.resources = tmu_resources,
+	},
+};
+
 static struct mfd_cell bxt_wc_chgr_dev[] = {
 	{
 		.name = "bxt_wcove_usbc",
@@ -489,6 +491,15 @@ static int bxtwc_probe(struct platform_device *pdev)
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to add IRQ chip\n");
 
+	ret = bxtwc_add_chained_devices(pmic, bxt_wc_tmu_dev, ARRAY_SIZE(bxt_wc_tmu_dev),
+					pmic->irq_chip_data,
+					BXTWC_TMU_LVL1_IRQ,
+					IRQF_ONESHOT,
+					&bxtwc_regmap_irq_chip_tmu,
+					&pmic->irq_chip_data_tmu);
+	if (ret)
+		return ret;
+
 	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
 					 BXTWC_PWRBTN_LVL1_IRQ,
 					 IRQF_ONESHOT,
@@ -497,14 +508,6 @@ static int bxtwc_probe(struct platform_device *pdev)
 	if (ret)
 		return dev_err_probe(dev, ret, "Failed to add PWRBTN IRQ chip\n");
 
-	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
-					 BXTWC_TMU_LVL1_IRQ,
-					 IRQF_ONESHOT,
-					 &bxtwc_regmap_irq_chip_tmu,
-					 &pmic->irq_chip_data_tmu);
-	if (ret)
-		return dev_err_probe(dev, ret, "Failed to add TMU IRQ chip\n");
-
 	/* Add chained IRQ handler for BCU IRQs */
 	ret = bxtwc_add_chained_irq_chip(pmic, pmic->irq_chip_data,
 					 BXTWC_BCU_LVL1_IRQ,
diff --git a/drivers/platform/x86/intel/bxtwc_tmu.c b/drivers/platform/x86/intel/bxtwc_tmu.c
index d0e2a3c293b0..9ac801b929b9 100644
--- a/drivers/platform/x86/intel/bxtwc_tmu.c
+++ b/drivers/platform/x86/intel/bxtwc_tmu.c
@@ -48,9 +48,8 @@ static irqreturn_t bxt_wcove_tmu_irq_handler(int irq, void *data)
 static int bxt_wcove_tmu_probe(struct platform_device *pdev)
 {
 	struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent);
-	struct regmap_irq_chip_data *regmap_irq_chip;
 	struct wcove_tmu *wctmu;
-	int ret, virq, irq;
+	int ret;
 
 	wctmu = devm_kzalloc(&pdev->dev, sizeof(*wctmu), GFP_KERNEL);
 	if (!wctmu)
@@ -59,27 +58,18 @@ static int bxt_wcove_tmu_probe(struct platform_device *pdev)
 	wctmu->dev = &pdev->dev;
 	wctmu->regmap = pmic->regmap;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
+	wctmu->irq = platform_get_irq(pdev, 0);
+	if (wctmu->irq < 0)
+		return wctmu->irq;
 
-	regmap_irq_chip = pmic->irq_chip_data_tmu;
-	virq = regmap_irq_get_virq(regmap_irq_chip, irq);
-	if (virq < 0) {
-		dev_err(&pdev->dev,
-			"failed to get virtual interrupt=%d\n", irq);
-		return virq;
-	}
-
-	ret = devm_request_threaded_irq(&pdev->dev, virq,
+	ret = devm_request_threaded_irq(&pdev->dev, wctmu->irq,
 					NULL, bxt_wcove_tmu_irq_handler,
 					IRQF_ONESHOT, "bxt_wcove_tmu", wctmu);
 	if (ret) {
 		dev_err(&pdev->dev, "request irq failed: %d,virq: %d\n",
-							ret, virq);
+			ret, wctmu->irq);
 		return ret;
 	}
-	wctmu->irq = virq;
 
 	/* Unmask TMU second level Wake & System alarm */
 	regmap_update_bits(wctmu->regmap, BXTWC_MTMUIRQ_REG,
-- 
2.43.0.rc1.1336.g36b5255a03ac


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ