usb: musb: remove generic_interrupt

This patch is based on the discussion of a previous patch to fix an issue
where the omap2430 musb driver is not working for N9/N950.

Moving all the interrupt handling to the devices. Avoids inclusion of generic
interrupt and breakage due to sometimes misleading CONFIG options. This makes
sure usb always works if on of the subdrivers is chosen. Tested on Nokia N9/N950.

Partially clean up CONFIG_SOC_OMAP3430 which is not necessary in the cases
where I removed it. Also helps with the removal work of those options that
Tony Lindgren predicted would happen at some point.

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 2 insertions, 29 deletions

diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index 78037bfad96..774d8154a28 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -1501,33 +1501,6 @@ static int __devinit musb_core_init(u16 musb_type, struct musb *musb)
 
 /*-------------------------------------------------------------------------*/
 
-#if defined(CONFIG_SOC_OMAP2430) || defined(CONFIG_SOC_OMAP3430) || \
-	defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_ARCH_U8500)
-
-static irqreturn_t generic_interrupt(int irq, void *__hci)
-{
-	unsigned long	flags;
-	irqreturn_t	retval = IRQ_NONE;
-	struct musb	*musb = __hci;
-
-	spin_lock_irqsave(&musb->lock, flags);
-
-	musb->int_usb = musb_readb(musb->mregs, MUSB_INTRUSB);
-	musb->int_tx = musb_readw(musb->mregs, MUSB_INTRTX);
-	musb->int_rx = musb_readw(musb->mregs, MUSB_INTRRX);
-
-	if (musb->int_usb || musb->int_tx || musb->int_rx)
-		retval = musb_interrupt(musb);
-
-	spin_unlock_irqrestore(&musb->lock, flags);
-
-	return retval;
-}
-
-#else
-#define generic_interrupt	NULL
-#endif
-
 /*
  * handle all the irqs defined by the HDRC core. for now we expect:  other
  * irq sources (phy, dma, etc) will be handled first, musb->int_* values
@@ -1896,7 +1869,8 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 	musb->ops = plat->platform_ops;
 
 	/* The musb_platform_init() call:
-	 *   - adjusts musb->mregs and musb->isr if needed,
+	 *   - adjusts musb->mregs
+	 *   - sets the musb->isr
 	 *   - may initialize an integrated tranceiver
 	 *   - initializes musb->xceiv, usually by otg_get_phy()
 	 *   - stops powering VBUS
@@ -1906,7 +1880,6 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl)
 	 * external/discrete ones in various flavors (twl4030 family,
 	 * isp1504, non-OTG, etc) mostly hooking up through ULPI.
 	 */
-	musb->isr = generic_interrupt;
 	status = musb_platform_init(musb);
 	if (status < 0)
 		goto fail1;