[RFC 04/14] xen/arm: next_module: Skip module if the size is 0

[Julien Grall <julien.grall@linaro.org>]

When the the module size is 0, it means that the module was not provided by
the user. It can happen, if the user choose to boot without initrd.

In this case, both fields (start and size) are zeroed. Therefore, next_module
will return 0 every time if there is other non-zero module after this one. It
will happend when the XSM module will be added.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
---
 xen/arch/arm/setup.c |    3 +++
 1 file changed, 3 insertions(+)

diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c
index 959744e..31d853d 100644
--- a/xen/arch/arm/setup.c
+++ b/xen/arch/arm/setup.c
@@ -281,6 +281,9 @@ static paddr_t __init next_module(paddr_t s, paddr_t *end)
         paddr_t mod_s = mi->module[i].start;
         paddr_t mod_e = mod_s + mi->module[i].size;
 
+        if ( !mi->module[i].size )
+            continue;
+
         if ( mod_s < s )
             continue;
         if ( mod_s > lowest )
-- 
1.7.10.4