@@ -78,27 +78,23 @@ static struct cma *fadump_cma;
* But for some reason even if it fails we still have the memory reservation
* with us and we can still continue doing fadump.
*/
-static int __init fadump_cma_init(void)
+static void __init fadump_cma_init(void)
{
unsigned long long base, size;
int rc;
- if (!fw_dump.fadump_enabled)
- return 0;
-
+ if (!fw_dump.fadump_supported || !fw_dump.fadump_enabled ||
+ fw_dump.dump_active)
+ return;
/*
* Do not use CMA if user has provided fadump=nocma kernel parameter.
- * Return 1 to continue with fadump old behaviour.
*/
- if (fw_dump.nocma)
- return 1;
+ if (fw_dump.nocma || !fw_dump.boot_memory_size)
+ return;
base = fw_dump.reserve_dump_area_start;
size = fw_dump.boot_memory_size;
- if (!size)
- return 0;
-
rc = cma_init_reserved_mem(base, size, 0, "fadump_cma", &fadump_cma);
if (rc) {
pr_err("Failed to init cma area for firmware-assisted dump,%d\n", rc);
@@ -108,7 +104,7 @@ static int __init fadump_cma_init(void)
* blocked from production system usage. Hence return 1,
* so that we can continue with fadump.
*/
- return 1;
+ return;
}
/*
@@ -125,10 +121,9 @@ static int __init fadump_cma_init(void)
cma_get_size(fadump_cma),
(unsigned long)cma_get_base(fadump_cma) >> 20,
fw_dump.reserve_dump_area_size);
- return 1;
}
#else
-static int __init fadump_cma_init(void) { return 1; }
+static void __init fadump_cma_init(void) { }
#endif /* CONFIG_CMA */
/*
@@ -638,7 +633,7 @@ int __init fadump_reserve_mem(void)
pr_info("Reserved %lldMB of memory at %#016llx (System RAM: %lldMB)\n",
(size >> 20), base, (memblock_phys_mem_size() >> 20));
- ret = fadump_cma_init();
+ fadump_cma_init();
}
return ret;
We anyway don't use any return values from fadump_cma_init(). Since fadump_reserve_mem() from where fadump_cma_init() gets called today, already has the required checks. This patch makes this function return type as void. Let's also handle extra cases like return if fadump_supported is false or dump_active, so that in later patches we can call fadump_cma_init() separately from setup_arch(). Signed-off-by: Ritesh Harjani (IBM) <ritesh.list@gmail.com> --- arch/powerpc/kernel/fadump.c | 23 +++++++++-------------- 1 file changed, 9 insertions(+), 14 deletions(-)