mfd: altera-sysmgr: Fix physical address storing more

A recent fix improved the way the resource gets passed to
the low-level accessors, but left one warning that appears
in configurations with a resource_size_t that is wider than
a pointer:

In file included from drivers/mfd/altera-sysmgr.c:19:
drivers/mfd/altera-sysmgr.c: In function 'sysmgr_probe':
drivers/mfd/altera-sysmgr.c:148:40: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
  148 |   regmap = devm_regmap_init(dev, NULL, (void *)res->start,
      |                                        ^
include/linux/regmap.h:646:6: note: in definition of macro '__regmap_lockdep_wrapper'
  646 |   fn(__VA_ARGS__, &_key,     \
      |      ^~~~~~~~~~~
drivers/mfd/altera-sysmgr.c:148:12: note: in expansion of macro 'devm_regmap_init'
  148 |   regmap = devm_regmap_init(dev, NULL, (void *)res->start,
      |            ^~~~~~~~~~~~~~~~

I had tried a different approach that would store the address
in the private data as a phys_addr_t, but the easiest solution
now seems to be to add a double cast to shut up the warning.

As the address is passed to an inline assembly, it is guaranteed
to not be wider than a register anyway.

Fixes: d9ca7801b6e5 ("mfd: altera-sysmgr: Fix physical address storing hacks")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/altera-sysmgr.c b/drivers/mfd/altera-sysmgr.c
index 193a96c8b1eab9b1c4cf30307dc990f4b242c161..20cb294c75122db7e195f01878d8d73c00b713a8 100644 (file)
--- a/drivers/mfd/altera-sysmgr.c
+++ b/drivers/mfd/altera-sysmgr.c
@@ -145,7 +145,8 @@ static int sysmgr_probe(struct platform_device *pdev)
                sysmgr_config.reg_write = s10_protected_reg_write;
 
                /* Need physical address for SMCC call */
-               regmap = devm_regmap_init(dev, NULL, (void *)res->start,
+               regmap = devm_regmap_init(dev, NULL,
+                                         (void *)(uintptr_t)res->start,
                                          &sysmgr_config);
        } else {
                base = devm_ioremap(dev, res->start, resource_size(res));