[ARM] S3C: Do not kmalloc/kfree during inner suspend code.

The PM CRC checking code kmallocs an area to save a set of
CRC values during suspend. This triggers a warning due to the
call of a function that might sleep whilst the system is not
in a valid state to do so.

Move the allocation and free to points in the suspend and resume
process where they can call a function that might-sleep.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 16 insertions, 4 deletions

diff --git a/arch/arm/plat-s3c/pm-check.c b/arch/arm/plat-s3c/pm-check.c
index 183f1304bf58..39f2555564da 100644
--- a/arch/arm/plat-s3c/pm-check.c
+++ b/arch/arm/plat-s3c/pm-check.c
@@ -222,9 +222,21 @@ static u32 *s3c_pm_runcheck(struct resource *res, u32 *val)
 */
 void s3c_pm_check_restore(void)
 {
-        if (crcs != NULL) {
+        if (crcs != NULL)
                 s3c_pm_run_sysram(s3c_pm_runcheck, crcs);
-                kfree(crcs);
-                crcs = NULL;
-        }
 }
+
+/**
+ * s3c_pm_check_cleanup() - free memory resources
+ *
+ * Free the resources that where allocated by the suspend
+ * memory check code. We do this separately from the
+ * s3c_pm_check_restore() function as we cannot call any
+ * functions that might sleep during that resume.
+ */
+void s3c_pm_check_cleanup(void)
+{
+        kfree(crcs);
+        crcs = NULL;
+}
+