From: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
A pointer to twl4030_usb_probe is passed to the core via
platform_driver_register and so the function must not disappear when the
.init sections are discarded. Otherwise (if also having HOTPLUG=y)
unbinding and binding a device to the driver via sysfs will result in an
oops as does a device being registered late.
An alternative to this patch is using platform_driver_probe instead of
platform_driver_register plus removing the pointer to the probe function
from the struct platform_driver.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
Cc: Jouni Hogander <jouni.hogander@xxxxxxxxx>
Cc: Kalle Jokiniemi <kalle.jokiniemi@xxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Cc: Tony Lindgren <tony@xxxxxxxxxxx>
Cc: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Felipe Balbi <felipe.balbi@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/otg/twl4030-usb.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/otg/twl4030-usb.c b/drivers/usb/otg/twl4030-usb.c
index d9478d0..c34e639 100644
--- a/drivers/usb/otg/twl4030-usb.c
+++ b/drivers/usb/otg/twl4030-usb.c
@@ -641,7 +641,7 @@ static int twl4030_set_host(struct otg_transceiver *x, struct usb_bus *host)
return 0;
}
-static int __init twl4030_usb_probe(struct platform_device *pdev)
+static int __devinit twl4030_usb_probe(struct platform_device *pdev)
{
struct twl4030_usb_data *pdata = pdev->dev.platform_data;
struct twl4030_usb *twl;
--
1.6.3.2
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