On 05/23/2015 12:08 AM, David Cohen wrote:
Hi,
On Fri, May 22, 2015 at 07:29:15PM +0800, Lu Baolu wrote:
Phy drivers and the ulpi interface providers depend on the
registeration of the ulpi bus. Ulpi registers the bus in
module_init(). This could result in a load order issue, i.e.
It's still not an issue :(
I'd say "unnecessary probe delays".
I managed to boot a kernel built from the top of Felipe's
remotes/origin/next branch under an Ubuntu environment
on Intel's Bay Trail tablet.
The same panic (as I found in the Android environment previously)
shows up as well. And if I replace module_init() with sys_initcall(),
the panic disappears.
Thanks,
-Baolu
But of cource it's Felipe's call :) Description looks better now.
BR, David
ulpi phy drivers or the ulpi interface providers loading
before the bus registeration.
This patch fixes this load order issue by putting ulpi_init
in subsys_initcall().
Reported-by: Zhuo Qiuxu <qiuxu.z...@intel.com>
Signed-off-by: Lu Baolu <baolu...@linux.intel.com>
---
drivers/usb/common/ulpi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/common/ulpi.c b/drivers/usb/common/ulpi.c
index 0e6f968..01c0c04 100644
--- a/drivers/usb/common/ulpi.c
+++ b/drivers/usb/common/ulpi.c
@@ -242,7 +242,7 @@ static int __init ulpi_init(void)
{
return bus_register(&ulpi_bus);
}
-module_init(ulpi_init);
+subsys_initcall(ulpi_init);
static void __exit ulpi_exit(void)
{
--
2.1.4
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