linux - Contrib clone of linux

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author	Jiang Liu <jiang.liu@linux.intel.com>	2014-08-29 17:26:23 +0800
committer	Thomas Gleixner <tglx@linutronix.de>	2014-08-29 13:38:00 +0200
commit	9eabc99a635a77cbf0948ce17d3cbc2b51680d4a (patch)
tree	096bfd1ecd8e69bbdf877128295cb5e5abae5584 /arch/x86/pci
parent	f395dcae7a68497751869cf0031fd8ce5e115f0a (diff)

x86, irq, PCI: Keep IRQ assignment for runtime power management

Now IOAPIC driver dynamically allocates IRQ numbers for IOAPIC pins. We need to keep IRQ assignment for PCI devices during runtime power management, otherwise it may cause failure of device wakeups. Commit 3eec595235c17a7 "x86, irq, PCI: Keep IRQ assignment for PCI devices during suspend/hibernation" has fixed the issue for suspend/ hibernation, we also need the same fix for runtime device sleep too. Fix: https://bugzilla.kernel.org/show_bug.cgi?id=83271 Reported-and-Tested-by: EmanueL Czirai <amanual@openmailbox.org> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Tony Luck <tony.luck@intel.com> Cc: Joerg Roedel <joro@8bytes.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: EmanueL Czirai <amanual@openmailbox.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Rafael J. Wysocki <rjw@rjwysocki.net> Cc: Bjorn Helgaas <bhelgaas@google.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Grant Likely <grant.likely@linaro.org> Link: http://lkml.kernel.org/r/1409304383-18806-1-git-send-email-jiang.liu@linux.intel.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

Diffstat (limited to 'arch/x86/pci')

-rw-r--r--

arch/x86/pci/intel_mid_pci.c

-rw-r--r--

arch/x86/pci/irq.c

2 files changed, 2 insertions, 2 deletions

// SPDX-License-Identifier: GPL-2.0 /* * Filename: cfag12864bfb.c * Version: 0.1.0 * Description: cfag12864b LCD framebuffer driver * Depends: cfag12864b * * Author: Copyright (C) Miguel Ojeda Sandonis * Date: 2006-10-31 */ #include <linux/init.h> #include <linux/module.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/errno.h> #include <linux/fb.h> #include <linux/mm.h> #include <linux/platform_device.h> #include <linux/string.h> #include <linux/uaccess.h> #include <linux/cfag12864b.h> #define CFAG12864BFB_NAME "cfag12864bfb" static const struct fb_fix_screeninfo cfag12864bfb_fix = { .id = "cfag12864b", .type = FB_TYPE_PACKED_PIXELS, .visual = FB_VISUAL_MONO10, .xpanstep = 0, .ypanstep = 0, .ywrapstep = 0, .line_length = CFAG12864B_WIDTH / 8, .accel = FB_ACCEL_NONE, }; static const struct fb_var_screeninfo cfag12864bfb_var = { .xres = CFAG12864B_WIDTH, .yres = CFAG12864B_HEIGHT, .xres_virtual = CFAG12864B_WIDTH, .yres_virtual = CFAG12864B_HEIGHT, .bits_per_pixel = 1, .red = { 0, 1, 0 }, .green = { 0, 1, 0 }, .blue = { 0, 1, 0 }, .left_margin = 0, .right_margin = 0, .upper_margin = 0, .lower_margin = 0, .vmode = FB_VMODE_NONINTERLACED, }; static int cfag12864bfb_mmap(struct fb_info *info, struct vm_area_struct *vma) { return vm_insert_page(vma, vma->vm_start, virt_to_page(cfag12864b_buffer)); } static struct fb_ops cfag12864bfb_ops = { .owner = THIS_MODULE, .fb_read = fb_sys_read, .fb_write = fb_sys_write, .fb_fillrect = sys_fillrect, .fb_copyarea = sys_copyarea, .fb_imageblit = sys_imageblit, .fb_mmap = cfag12864bfb_mmap, }; static int cfag12864bfb_probe(struct platform_device *device) { int ret = -EINVAL; struct fb_info *info = framebuffer_alloc(0, &device->dev); if (!info) goto none; info->screen_base = (char __iomem *) cfag12864b_buffer; info->screen_size = CFAG12864B_SIZE; info->fbops = &cfag12864bfb_ops; info->fix = cfag12864bfb_fix; info->var = cfag12864bfb_var; info->pseudo_palette = NULL; info->par = NULL; info->flags = FBINFO_FLAG_DEFAULT; if (register_framebuffer(info) < 0) goto fballoced; platform_set_drvdata(device, info); fb_info(info, "%s frame buffer device\n", info->fix.id); return 0; fballoced: framebuffer_release(info); none: return ret; } static int cfag12864bfb_remove(struct platform_device *device) { struct fb_info *info = platform_get_drvdata(device); if (info) { unregister_framebuffer(info); framebuffer_release(info); } return 0; } static struct platform_driver cfag12864bfb_driver = { .probe = cfag12864bfb_probe, .remove = cfag12864bfb_remove, .driver = { .name = CFAG12864BFB_NAME, }, }; static struct platform_device *cfag12864bfb_device; static int __init cfag12864bfb_init(void) { int ret = -EINVAL; /* cfag12864b_init() must be called first */ if (!cfag12864b_isinited()) { printk(KERN_ERR CFAG12864BFB_NAME ": ERROR: " "cfag12864b is not initialized\n"); goto none; } if (cfag12864b_enable()) { printk(KERN_ERR CFAG12864BFB_NAME ": ERROR: " "can't enable cfag12864b refreshing (being used)\n"); return -ENODEV; } ret = platform_driver_register(&cfag12864bfb_driver); if (!ret) { cfag12864bfb_device = platform_device_alloc(CFAG12864BFB_NAME, 0); if (cfag12864bfb_device) ret = platform_device_add(cfag12864bfb_device); else ret = -ENOMEM; if (ret) { platform_device_put(cfag12864bfb_device); platform_driver_unregister(&cfag12864bfb_driver); } } none: return ret; } static void __exit cfag12864bfb_exit(void) { platform_device_unregister(cfag12864bfb_device); platform_driver_unregister(&cfag12864bfb_driver); cfag12864b_disable(); } module_init(cfag12864bfb_init); module_exit(cfag12864bfb_exit); MODULE_LICENSE("GPL v2"); MODULE_AUTHOR("Miguel Ojeda Sandonis <miguel.ojeda.sandonis@gmail.com>"); MODULE_DESCRIPTION("cfag12864b LCD framebuffer driver");


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