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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 <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
This commit is contained in:
Mike Frysinger 2007-10-22 00:19:31 +08:00 committed by Bryan Wu
parent 876a6682aa
commit a99bbccd87
2 changed files with 14 additions and 2 deletions
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8
arch/blackfin/mach-common/ints-priority-dc.c
View File

@ -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;

8
arch/blackfin/mach-common/ints-priority-sc.c
View File

@ -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;