Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=a99bbccd8738c0d8df270391284db2fae28d8a82
Commit: a99bbccd8738c0d8df270391284db2fae28d8a82
Parent: 876a6682aac9b22cf24e0a3a7fea648fd64e112b
Author: Mike Frysinger <[EMAIL PROTECTED]>
AuthorDate: Mon Oct 22 00:19:31 2007 +0800
Committer: Bryan Wu <[EMAIL PROTECTED]>
CommitDate: Mon Oct 22 00:19:31 2007 +0800
Blackfin arch: force irq_flags into the .data section
force irq_flags into the .data section by initializing it to
the hardware masks that cannot be disabled. this way if we
use irq enable/disable functions before the .bss has been
zeroed out (as does our l1 relocate/dma functions), we dont
hit a problem where bss contains bogus crap.
Signed-off-by: Mike Frysinger <[EMAIL PROTECTED]>
Signed-off-by: Bryan Wu <[EMAIL PROTECTED]>
---
arch/blackfin/mach-common/ints-priority-dc.c | 8 +++++++-
arch/blackfin/mach-common/ints-priority-sc.c | 8 +++++++-
2 files changed, 14 insertions(+), 2 deletions(-)
diff --git a/arch/blackfin/mach-common/ints-priority-dc.c
b/arch/blackfin/mach-common/ints-priority-dc.c
index 2db3546..c2f05fa 100644
--- a/arch/blackfin/mach-common/ints-priority-dc.c
+++ b/arch/blackfin/mach-common/ints-priority-dc.c
@@ -52,7 +52,13 @@
* -
*/
-unsigned long irq_flags = 0;
+/* Initialize this to an actual value to force it into the .data
+ * section so that we know it is properly initialized at entry into
+ * the kernel but before bss is initialized to zero (which is where
+ * it would live otherwise). The 0x1f magic represents the IRQs we
+ * cannot actually mask out in hardware.
+ */
+unsigned long irq_flags = 0x1f;
/* The number of spurious interrupts */
atomic_t num_spurious;
diff --git a/arch/blackfin/mach-common/ints-priority-sc.c
b/arch/blackfin/mach-common/ints-priority-sc.c
index e06fe96..7da5a0a 100644
--- a/arch/blackfin/mach-common/ints-priority-sc.c
+++ b/arch/blackfin/mach-common/ints-priority-sc.c
@@ -58,7 +58,13 @@
* -
*/
-unsigned long irq_flags = 0;
+/* Initialize this to an actual value to force it into the .data
+ * section so that we know it is properly initialized at entry into
+ * the kernel but before bss is initialized to zero (which is where
+ * it would live otherwise). The 0x1f magic represents the IRQs we
+ * cannot actually mask out in hardware.
+ */
+unsigned long irq_flags = 0x1f;
/* The number of spurious interrupts */
atomic_t num_spurious;
-
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