From c31fcf9765a6c3b7e7aef306d2045ecee16df5a9 Mon Sep 17 00:00:00 2001
From: Alex Deryskyba <alex@codesnake.com>
Date: Thu, 22 Jan 2015 14:58:32 +0100
Subject: [PATCH] projects/WeTek_Play/patches/linux: Add a kernel patch to
 switch IRQ handling for Ethernet, USB and SDIO from CPU0 to CPU1

---
 .../linux/130-switch_irq_to_CPU1.patch        | 75 +++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 projects/WeTek_Play/patches/linux/130-switch_irq_to_CPU1.patch

diff --git a/projects/WeTek_Play/patches/linux/130-switch_irq_to_CPU1.patch b/projects/WeTek_Play/patches/linux/130-switch_irq_to_CPU1.patch
new file mode 100644
index 0000000000..24c139de96
--- /dev/null
+++ b/projects/WeTek_Play/patches/linux/130-switch_irq_to_CPU1.patch
@@ -0,0 +1,75 @@
+diff -Naur a/drivers/amlogic/ethernet/am_net8218.c b/drivers/amlogic/ethernet/am_net8218.c
+--- a/drivers/amlogic/ethernet/am_net8218.c	2015-01-04 18:07:58.000000000 +0100
++++ b/drivers/amlogic/ethernet/am_net8218.c	2015-01-20 23:44:29.000000000 +0100
+@@ -1251,6 +1251,11 @@
+ 		goto out_err;
+ 	}
+ 
++	if (irq_set_affinity(dev->irq, cpumask_of(1))) {
++		printk(KERN_DEBUG "unable to set irq affinity (irq=%d, cpu=%u)\n",
++                                dev->irq, 1);
++	}
++	
+ 	if (g_debug > 0)
+ 		printk(KERN_DEBUG "%s: opened (irq %d).\n",
+ 		       dev->name, dev->irq);
+diff -Naur a/drivers/amlogic/mmc/aml_sdio.c b/drivers/amlogic/mmc/aml_sdio.c
+--- a/drivers/amlogic/mmc/aml_sdio.c	2015-01-04 18:07:58.000000000 +0100
++++ b/drivers/amlogic/mmc/aml_sdio.c	2015-01-21 00:05:08.000000000 +0100
+@@ -1267,6 +1267,11 @@
+         return NULL;
+     }
+ 
++	if (irq_set_affinity(INT_SDIO, cpumask_of(1))) {
++		printk(KERN_DEBUG "unable to set irq affinity (irq=%d, cpu=%u)\n",
++                                INT_SDIO, 1);
++	}
++	
+     host->bn_buf = dma_alloc_coherent(NULL, SDIO_BOUNCE_REQ_SIZE,
+                             &host->bn_dma_buf, GFP_KERNEL);
+     if(NULL == host->bn_buf){
+diff -Naur a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_driver.c b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_driver.c
+--- a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_driver.c	2015-01-04 18:07:58.000000000 +0100
++++ b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_driver.c	2015-01-20 18:02:40.000000000 +0100
+@@ -1202,7 +1202,10 @@
+ 	} else {
+ 		dwc_otg_device->common_irq_installed = 1;
+ 	}
+-
++	 if (irq_set_affinity(_dev->irq, cpumask_of(1))) {
++               pr_warning("unable to set irq affinity (irq=%d, cpu=%u)\n",
++                                _dev->irq, 1);
++        }
+ #ifdef LM_INTERFACE
+ //	set_irq_type(_dev->irq, IRQT_LOW);
+ #endif
+diff -Naur a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_linux.c b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_linux.c
+--- a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_linux.c	2015-01-04 18:07:58.000000000 +0100
++++ b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_hcd_linux.c	2015-01-20 18:06:35.000000000 +0100
+@@ -610,7 +610,11 @@
+ 	if (retval < 0) {
+ 		goto error2;
+ 	}
+-
++	 if (irq_set_affinity(_dev->irq, cpumask_of(1))) {
++                pr_warning("unable to set irq affinity (irq=%d, cpu=%u)\n",
++                                _dev->irq, 1);
++        }
++		
+ 	dwc_otg_hcd_set_priv_data(dwc_otg_hcd, hcd);
+ 	return 0;
+ 
+diff -Naur a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_pcd_linux.c b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_pcd_linux.c
+--- a/drivers/amlogic/usb/dwc_otg/310/dwc_otg_pcd_linux.c	2015-01-04 18:07:58.000000000 +0100
++++ b/drivers/amlogic/usb/dwc_otg/310/dwc_otg_pcd_linux.c	2015-01-20 18:03:14.000000000 +0100
+@@ -1290,6 +1290,10 @@
+ 		return -EBUSY;
+ 	}
+ 
++	 if (irq_set_affinity(_dev->irq, cpumask_of(1))) {
++                pr_warning("unable to set irq affinity (irq=%d, cpu=%u)\n",
++                                _dev->irq, 1);
++        }
+ 	dwc_otg_pcd_start(gadget_wrapper->pcd, &fops);
+ 
+ 	return retval;