Re: [PATCH] sparseirq: make some func to be used with genirq

[Yinghai Lu <yinghai@kernel.org>]

Ingo Molnar wrote:
> Yinghai, the crossbuild to Alpha fails with:
> 
> /home/mingo/tip/kernel/fork.c: In function 'copy_signal':
> /home/mingo/tip/kernel/fork.c:825: warning: unused variable 'ret'
> /home/mingo/tip/drivers/char/random.c: In function 'get_timer_rand_state':
> /home/mingo/tip/drivers/char/random.c:584: error: dereferencing pointer to incomplete type
> /home/mingo/tip/drivers/char/random.c: In function 'set_timer_rand_state':
> /home/mingo/tip/drivers/char/random.c:594: error: dereferencing pointer to incomplete type
> make[3]: *** [drivers/char/random.o] Error 1
> 

please check

[PATCH] sparseirq: fix compiling with unknown irq_desc struct

Impact: fix compiling

irq_desc is defined in linux/irq.h

Signed-off-by: Yinghai Lu <yinghai@kernel.org>

diff --git a/include/linux/random.h b/include/linux/random.h
index 407ea36..a27bf17 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -10,6 +10,10 @@
 #include <linux/ioctl.h>
 #include <linux/irqnr.h>
 
+#ifdef CONFIG_GENERIC_HARDIRQS
+#include <linux/irq.h>
+#endif
+
 /* ioctl()'s for the random number generator */
 
 /* Get the entropy count. */