spi/dw: Add spi number into spi irq desc

Signed-off-by: ShuoX Liu <shuox.liu@intel.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

drivers/spi/spi-dw.c

@@ -818,9 +818,11 @@ int __devinit dw_spi_add_host(struct dw_spi *dws)
 	dws->prev_chip = NULL;
 	dws->dma_inited = 0;
 	dws->dma_addr = (dma_addr_t)(dws->paddr + 0x60);
+	snprintf(dws->name, sizeof(dws->name), "dw_spi%d",
+			dws->bus_num);
 
 	ret = request_irq(dws->irq, dw_spi_irq, IRQF_SHARED,
-			"dw_spi", dws);
+			dws->name, dws);
 	if (ret < 0) {
 		dev_err(&master->dev, "can not get IRQ\n");
 		goto err_free_master;

drivers/spi/spi-dw.h

@@ -96,6 +96,7 @@ struct dw_spi {
 	struct spi_device	*cur_dev;
 	struct device		*parent_dev;
 	enum dw_ssi_type	type;
+	char			name[16];
 
 	void __iomem		*regs;
 	unsigned long		paddr;