[PATCH] ppc32: Modify Freescale MPC52xx IRQ mapping to _not_ use irq 0

AFAIK IRQ number 0 is a perfectly valid IRQ number.  But it seems there are
numerous places where it's considered to be invalid or "no irq" value.  Since
that value is problematic, the IRQ mapping is changed to not use it.

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/include/asm-ppc/mpc52xx.h b/include/asm-ppc/mpc52xx.h
index e5f80c2..04d5630 100644 (file)
--- a/include/asm-ppc/mpc52xx.h
+++ b/include/asm-ppc/mpc52xx.h
@@ -107,7 +107,7 @@ enum ppc_sys_devices {
 #define MPC52xx_SDMA_IRQ_NUM   17
 #define MPC52xx_PERP_IRQ_NUM   23
 
-#define MPC52xx_CRIT_IRQ_BASE  0
+#define MPC52xx_CRIT_IRQ_BASE  1
 #define MPC52xx_MAIN_IRQ_BASE  (MPC52xx_CRIT_IRQ_BASE + MPC52xx_CRIT_IRQ_NUM)
 #define MPC52xx_SDMA_IRQ_BASE  (MPC52xx_MAIN_IRQ_BASE + MPC52xx_MAIN_IRQ_NUM)
 #define MPC52xx_PERP_IRQ_BASE  (MPC52xx_SDMA_IRQ_BASE + MPC52xx_SDMA_IRQ_NUM)