From 11e981f1e02c2a36465cbb208b21cb8b6480f399 Mon Sep 17 00:00:00 2001 From: David Shaohua Li Date: Wed, 3 Aug 2005 23:46:33 -0400 Subject: [PATCH] [ACPI] S3 resume: avoid kmalloc() might_sleep oops symptom ACPI now uses kmalloc(...,GPF_ATOMIC) during suspend/resume. http://bugzilla.kernel.org/show_bug.cgi?id=3469 Signed-off-by: David Shaohua Li Signed-off-by: Len Brown --- drivers/acpi/osl.c | 6 +++++- drivers/acpi/pci_link.c | 7 +++++++ 2 files changed, 12 insertions(+), 1 deletion(-) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index bdd9f37f8101..7289da3c4db6 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -145,10 +145,14 @@ acpi_os_vprintf(const char *fmt, va_list args) #endif } +extern int acpi_in_resume; void * acpi_os_allocate(acpi_size size) { - return kmalloc(size, GFP_KERNEL); + if (acpi_in_resume) + return kmalloc(size, GFP_ATOMIC); + else + return kmalloc(size, GFP_KERNEL); } void diff --git a/drivers/acpi/pci_link.c b/drivers/acpi/pci_link.c index 65cea07abbc3..834c2ceff1aa 100644 --- a/drivers/acpi/pci_link.c +++ b/drivers/acpi/pci_link.c @@ -798,6 +798,11 @@ acpi_pci_link_resume( return_VALUE(0); } +/* + * FIXME: this is a workaround to avoid nasty warning. It will be removed + * after every device calls pci_disable_device in .resume. + */ +int acpi_in_resume; static int irqrouter_resume( struct sys_device *dev) @@ -807,6 +812,7 @@ irqrouter_resume( ACPI_FUNCTION_TRACE("irqrouter_resume"); + acpi_in_resume = 1; list_for_each(node, &acpi_link.entries) { link = list_entry(node, struct acpi_pci_link, node); if (!link) { @@ -816,6 +822,7 @@ irqrouter_resume( } acpi_pci_link_resume(link); } + acpi_in_resume = 0; return_VALUE(0); } -- 2.20.1