/* * Kirkwood thermal sensor driver * * Copyright (C) 2012 Nobuhiro Iwamatsu * * This software is licensed under the terms of the GNU General Public * License version 2, as published by the Free Software Foundation, and * may be copied, distributed, and modified under those terms. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * */ #include #include #include #include #include #include #include #include #define KIRKWOOD_THERMAL_VALID_OFFSET 9 #define KIRKWOOD_THERMAL_VALID_MASK 0x1 #define KIRKWOOD_THERMAL_TEMP_OFFSET 10 #define KIRKWOOD_THERMAL_TEMP_MASK 0x1FF /* Kirkwood Thermal Sensor Dev Structure */ struct kirkwood_thermal_priv { void __iomem *sensor; }; static int kirkwood_get_temp(struct thermal_zone_device *thermal, int *temp) { unsigned long reg; struct kirkwood_thermal_priv *priv = thermal->devdata; reg = readl_relaxed(priv->sensor); /* Valid check */ if (!((reg >> KIRKWOOD_THERMAL_VALID_OFFSET) & KIRKWOOD_THERMAL_VALID_MASK)) { dev_err(&thermal->device, "Temperature sensor reading not valid\n"); return -EIO; } /* * Calculate temperature. According to Marvell internal * documentation the formula for this is: * Celsius = (322-reg)/1.3625 */ reg = (reg >> KIRKWOOD_THERMAL_TEMP_OFFSET) & KIRKWOOD_THERMAL_TEMP_MASK; *temp = ((3220000000UL - (10000000UL * reg)) / 13625); return 0; } static struct thermal_zone_device_ops ops = { .get_temp = kirkwood_get_temp, }; static const struct of_device_id kirkwood_thermal_id_table[] = { { .compatible = "marvell,kirkwood-thermal" }, {} }; static int kirkwood_thermal_probe(struct platform_device *pdev) { struct thermal_zone_device *thermal = NULL; struct kirkwood_thermal_priv *priv; struct resource *res; priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); priv->sensor = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(priv->sensor)) return PTR_ERR(priv->sensor); thermal = thermal_zone_device_register("kirkwood_thermal", 0, 0, priv, &ops, NULL, 0, 0); if (IS_ERR(thermal)) { dev_err(&pdev->dev, "Failed to register thermal zone device\n"); return PTR_ERR(thermal); } platform_set_drvdata(pdev, thermal); return 0; } static int kirkwood_thermal_exit(struct platform_device *pdev) { struct thermal_zone_device *kirkwood_thermal = platform_get_drvdata(pdev); thermal_zone_device_unregister(kirkwood_thermal); return 0; } MODULE_DEVICE_TABLE(of, kirkwood_thermal_id_table); static struct platform_driver kirkwood_thermal_driver = { .probe = kirkwood_thermal_probe, .remove = kirkwood_thermal_exit, .driver = { .name = "kirkwood_thermal", .of_match_table = kirkwood_thermal_id_table, }, }; module_platform_driver(kirkwood_thermal_driver); MODULE_AUTHOR("Nobuhiro Iwamatsu "); MODULE_DESCRIPTION("kirkwood thermal driver"); MODULE_LICENSE("GPL"); ethod='get'>
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authorChristoph Hellwig <hch@lst.de>2017-01-30 13:15:41 +0100
committerBjorn Helgaas <bhelgaas@google.com>2017-02-02 10:35:46 -0600
commitdfef358bd1beb4e7b5c94eca944be9cd23dfc752 (patch)
treeb9a2afb38a4c2ac8ad31f49ec0d71fe9e5b1994c /sound/usb/line6/driver.h
parent030305d69fc6963c16003f50d7e8d74b02d0a143 (diff)
PCI/MSI: Don't apply affinity if there aren't enough vectors left
Bart reported a problem wіth an out of bounds access in the low-level IRQ affinity code, which we root caused to the qla2xxx driver assigning all its MSI-X vectors to the pre and post vectors, and not having any left for the actually spread IRQs. Fix this issue by not asking for affinity assignment when there are no vectors to assign left. Fixes: 402723ad5c62 ("PCI/MSI: Provide pci_alloc_irq_vectors_affinity()") Link: https://lkml.kernel.org/r/1485359225.3093.3.camel@sandisk.com Reported-by: Bart Van Assche <bart.vanassche@sandisk.com> Tested-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'sound/usb/line6/driver.h')