From: Jean Delvare Date: Tue, 18 Apr 2006 12:49:56 +0000 (+0200) Subject: [PATCH] PCI: Error handling on PCI device resume X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=8d92bc2270d67a43b1d7e94a8cb6f81f1435fe9a;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git [PATCH] PCI: Error handling on PCI device resume We currently don't handle errors properly when resuming a PCI device: * In pci_default_resume() we capture the error code returned by pci_enable_device() but don't pass it up to the caller. Introduced by commit 95a629657dbe28e44a312c47815b3dc3f1ce0970 * In pci_resume_device(), the errors possibly returned by the driver's .resume method or by the generic pci_default_resume() function are ignored. This patch fixes both issues. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 1456759936c5..10e1a905c144 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -285,9 +285,9 @@ static int pci_device_suspend(struct device * dev, pm_message_t state) * Default resume method for devices that have no driver provided resume, * or not even a driver at all. */ -static void pci_default_resume(struct pci_dev *pci_dev) +static int pci_default_resume(struct pci_dev *pci_dev) { - int retval; + int retval = 0; /* restore the PCI config space */ pci_restore_state(pci_dev); @@ -297,18 +297,21 @@ static void pci_default_resume(struct pci_dev *pci_dev) /* if the device was busmaster before the suspend, make it busmaster again */ if (pci_dev->is_busmaster) pci_set_master(pci_dev); + + return retval; } static int pci_device_resume(struct device * dev) { + int error; struct pci_dev * pci_dev = to_pci_dev(dev); struct pci_driver * drv = pci_dev->driver; if (drv && drv->resume) - drv->resume(pci_dev); + error = drv->resume(pci_dev); else - pci_default_resume(pci_dev); - return 0; + error = pci_default_resume(pci_dev); + return error; } static void pci_device_shutdown(struct device *dev)