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authorJiri Slaby <jslaby@suse.cz>2011-01-06 19:42:31 -0500
committerLen Brown <len.brown@intel.com>2011-01-07 00:26:45 -0500
commit26fcaf60fe3861409eb4c455c5c0d0f00f599b08 (patch)
tree43b0b91df3a1c8d136b63ce499001a05c9a02c93 /drivers/acpi/sleep.c
parent3c0eee3fe6a3a1c745379547c7e7c904aa64f6d5 (diff)
PM: Fix oops in suspend/hibernate code related to failing ioremap()
When ioremap() fails (which might happen for some reason), we nicely oops in suspend_nvs_save() due to NULL dereference by memcpy() in there. Fail gracefully instead. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi/sleep.c')
-rw-r--r--drivers/acpi/sleep.c5
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c
index febb153b5a68..d8bca6c90719 100644
--- a/drivers/acpi/sleep.c
+++ b/drivers/acpi/sleep.c
@@ -124,8 +124,7 @@ static int acpi_pm_freeze(void)
124static int acpi_pm_pre_suspend(void) 124static int acpi_pm_pre_suspend(void)
125{ 125{
126 acpi_pm_freeze(); 126 acpi_pm_freeze();
127 suspend_nvs_save(); 127 return suspend_nvs_save();
128 return 0;
129} 128}
130 129
131/** 130/**
@@ -151,7 +150,7 @@ static int acpi_pm_prepare(void)
151{ 150{
152 int error = __acpi_pm_prepare(); 151 int error = __acpi_pm_prepare();
153 if (!error) 152 if (!error)
154 acpi_pm_pre_suspend(); 153 error = acpi_pm_pre_suspend();
155 154
156 return error; 155 return error;
157} 156}