@@ -1,5 +1,5 @@
config USB_EMXX
- bool "EMXX USB Function Device Controller"
+ tristate "EMXX USB Function Device Controller"
depends on USB_GADGET && (ARCH_SHMOBILE || (ARM && COMPILE_TEST))
help
The Emma Mobile series of SoCs from Renesas Electronics and
@@ -15,7 +15,7 @@
*/
#include <linux/kernel.h>
-#include <linux/init.h>
+#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/delay.h>
#include <linux/ioport.h>
@@ -39,9 +39,11 @@
#include "emxx_udc.h"
+#define DRIVER_DESC "EMXX UDC driver"
#define DMA_ADDR_INVALID (~(dma_addr_t)0)
static const char driver_name[] = "emxx_udc";
+static const char driver_desc[] = DRIVER_DESC;
/*===========================================================================*/
/* Prototype */
@@ -3296,6 +3298,28 @@ static void nbu2ss_drv_shutdown(struct platform_device *pdev)
}
/*-------------------------------------------------------------------------*/
+static int nbu2ss_drv_remove(struct platform_device *pdev)
+{
+ struct nbu2ss_udc *udc;
+ struct nbu2ss_ep *ep;
+ int i;
+
+ udc = &udc_controller;
+
+ for (i = 0; i < NUM_ENDPOINTS; i++) {
+ ep = &udc->ep[i];
+ if (ep->virt_buf)
+ dma_free_coherent(NULL, PAGE_SIZE,
+ (void *)ep->virt_buf, ep->phys_buf);
+ }
+
+ /* Interrupt Handler - Release */
+ free_irq(INT_VBUS, udc);
+
+ return 0;
+}
+
+/*-------------------------------------------------------------------------*/
static int nbu2ss_drv_suspend(struct platform_device *pdev, pm_message_t state)
{
struct nbu2ss_udc *udc;
@@ -3347,12 +3371,16 @@ static int nbu2ss_drv_resume(struct platform_device *pdev)
static struct platform_driver udc_driver = {
.probe = nbu2ss_drv_probe,
.shutdown = nbu2ss_drv_shutdown,
+ .remove = nbu2ss_drv_remove,
.suspend = nbu2ss_drv_suspend,
.resume = nbu2ss_drv_resume,
.driver = {
- .name = driver_name,
- .suppress_bind_attrs = true,
+ .name = driver_name,
},
};
-builtin_platform_driver(udc_driver);
+module_platform_driver(udc_driver);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR("Renesas Electronics Corporation");
+MODULE_LICENSE("GPL");
A change to the usb gadget core allowed certain API functions to be part of a loadable module, which breaks having emxx_udc built-in: drivers/staging/built-in.o: In function `nbu2ss_drv_probe': (.text+0x2428): undefined reference to `usb_ep_set_maxpacket_limit' The original patch already fixed tons of other cases that have the added dependency but apparently missed this one that now appears in an ARM allmodconfig build. This patch makes the symbol "tristate", which lets the Kconfig dependency tracking handle it correctly. To make the module actually usable, I also revert 0af61e66ee16 ("drivers/staging: make emxx_udc.c explicitly non-modular"), which Paul Gortmaker added after noticing that the Kconfig symbol was 'bool'. Compared to the original version however, I leave out the '__exit' annotation on the remove callback, as Paul pointed out that this was incorrect. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Fixes: 5a8d651a2bde ("usb: gadget: move gadget API functions to udc-core") --- On Tuesday, July 5, 2016 11:52:42 AM CEST Mark Brown wrote: > On Tue, Jul 05, 2016 at 10:15:03AM +0100, Build bot for Mark Brown wrote: > > For the past little while both arm and arm64 allmodconfig builds have > been failing with: > > > drivers/built-in.o: In function `nbu2ss_drv_probe': > > binder.c:(.text+0x29438c): undefined reference to `usb_ep_set_maxpacket_limit' > > binder.c:(.text+0x294468): undefined reference to `usb_ep_set_maxpacket_limit' > > That function is a static inline in linux/usb/gadget.h which does seem > to be included (the driver builds fine) so I'm not entirely sure why > this is failing - I've not had time to investigate properly, I don't > know if the compiler is misfiring here. > This is the patch I sent for it when it first appeared: https://lkml.org/lkml/2016/6/23/528 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html