some sparse fixes

some sparse fixes

[Ben Dooks]

Some small fixes for sparse warnings.

[PATCH 1/3] arm: add definition of arch_irq_work_raise()

[Ben Dooks]

The arm <asm/irq_work.h> does not define arch_irq_work_raise()
so is triggering the following sparse warning. Add a definiton
to fix this:

kernel/irq_work.c:70:13: warning: symbol 'arch_irq_work_raise' was not declared. Should it be static?
arch/arm/kernel/smp.c:582:6: warning: symbol 'arch_irq_work_raise' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
 arch/arm/include/asm/irq_work.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/include/asm/irq_work.h b/arch/arm/include/asm/irq_work.h
index 8895999834cc..3149e4dc1b54 100644
--- a/arch/arm/include/asm/irq_work.h
+++ b/arch/arm/include/asm/irq_work.h
@@ -9,4 +9,6 @@ static inline bool arch_irq_work_has_interrupt(void)
 	return is_smp();
 }
 
+extern void arch_irq_work_raise(void);
+
 #endif /* _ASM_ARM_IRQ_WORK_H */
-- 
2.35.1

[PATCH 2/3] arm: dma-mapping: fix pointer/integer warning

[Ben Dooks]

Fix the use of a pointer assignment from integer where false
is being used instead of NULL. Fix the following warning by
usign NULL:

arch/arm/mm/dma-mapping.c:712:52: warning: Using plain integer as NULL pointer

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
 arch/arm/mm/dma-mapping.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 059cce018570..1483b6a4319d 100644
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -709,7 +709,7 @@ static void *__dma_alloc(struct device *dev, size_t size, dma_addr_t *handle,
 
 	*handle = DMA_MAPPING_ERROR;
 	allowblock = gfpflags_allow_blocking(gfp);
-	cma = allowblock ? dev_get_cma_area(dev) : false;
+	cma = allowblock ? dev_get_cma_area(dev) : NULL;
 
 	if (cma)
 		buf->allocator = &cma_allocator;
-- 
2.35.1

[PATCH 3/3] arm: fix undeclared soft_restart

[Ben Dooks]

The soft_restart() is declared in <asm/system_misc.h> so
include that to fix the following sparse warning:

arch/arm/kernel/reboot.c:78:6: warning: symbol 'soft_restart' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
---
 arch/arm/kernel/reboot.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/kernel/reboot.c b/arch/arm/kernel/reboot.c
index 2cb943422554..3f0d5c3dae11 100644
--- a/arch/arm/kernel/reboot.c
+++ b/arch/arm/kernel/reboot.c
@@ -10,6 +10,7 @@
 #include <asm/cacheflush.h>
 #include <asm/idmap.h>
 #include <asm/virt.h>
+#include <asm/system_misc.h>
 
 #include "reboot.h"
 
-- 
2.35.1