These changes are the raw update to linux-4.4.6-rt14. Kernel sources

are taken from kernel.org, and rt patch from the rt wiki download page.

During the rebasing, the following patch collided:

Force tick interrupt and get rid of softirq magic(I70131fb85).

Collisions have been removed because its logic was found on the
source already.

Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769
Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>

3 files changed, 8 insertions, 32 deletions

diff --git a/kernel/drivers/video/fbdev/i810/i810.h b/kernel/drivers/video/fbdev/i810/i810.h
index 1414b73ac..7b1c002bf 100644
--- a/kernel/drivers/video/fbdev/i810/i810.h
+++ b/kernel/drivers/video/fbdev/i810/i810.h
@@ -199,7 +199,6 @@
 #define HAS_FONTCACHE               8 
 
 /* driver flags */
-#define HAS_MTRR                    1
 #define HAS_ACCELERATION            2
 #define ALWAYS_SYNC                 4
 #define LOCKUP                      8
@@ -281,7 +280,7 @@ struct i810fb_par {
 	u32 ovract;
 	u32 cur_state;
 	u32 ddc_num;
-	int mtrr_reg;
+	int wc_cookie;
 	u16 bltcntl;
 	u8 interlace;
 };
diff --git a/kernel/drivers/video/fbdev/i810/i810_main.c b/kernel/drivers/video/fbdev/i810/i810_main.c
index bb674e431..025b882a4 100644
--- a/kernel/drivers/video/fbdev/i810/i810_main.c
+++ b/kernel/drivers/video/fbdev/i810/i810_main.c
@@ -41,6 +41,7 @@
 #include <linux/resource.h>
 #include <linux/unistd.h>
 #include <linux/console.h>
+#include <linux/io.h>
 
 #include <asm/io.h>
 #include <asm/div64.h>
@@ -1816,7 +1817,9 @@ static void i810_init_device(struct i810fb_par *par)
 	u8 reg;
 	u8 __iomem *mmio = par->mmio_start_virtual;
 
-	if (mtrr) set_mtrr(par);
+	if (mtrr)
+		par->wc_cookie= arch_phys_wc_add((u32) par->aperture.physical,
+						 par->aperture.size);
 
 	i810_init_cursor(par);
 
@@ -1865,8 +1868,8 @@ static int i810_allocate_pci_resource(struct i810fb_par *par,
 	}
 	par->res_flags |= FRAMEBUFFER_REQ;
 
-	par->aperture.virtual = ioremap_nocache(par->aperture.physical, 
-					par->aperture.size);
+	par->aperture.virtual = ioremap_wc(par->aperture.physical,
+					   par->aperture.size);
 	if (!par->aperture.virtual) {
 		printk("i810fb_init: cannot remap framebuffer region\n");
 		return -ENODEV;
@@ -2096,7 +2099,7 @@ static void i810fb_release_resource(struct fb_info *info,
 				    struct i810fb_par *par)
 {
 	struct gtt_data *gtt = &par->i810_gtt;
-	unset_mtrr(par);
+	arch_phys_wc_del(par->wc_cookie);
 
 	i810_delete_i2c_busses(par);
 
diff --git a/kernel/drivers/video/fbdev/i810/i810_main.h b/kernel/drivers/video/fbdev/i810/i810_main.h
index a25afaa53..7bfaaad1d 100644
--- a/kernel/drivers/video/fbdev/i810/i810_main.h
+++ b/kernel/drivers/video/fbdev/i810/i810_main.h
@@ -60,32 +60,6 @@ static inline void flush_cache(void)
 #define flush_cache() do { } while(0)
 #endif 
 
-#ifdef CONFIG_MTRR
-
-#include <asm/mtrr.h>
-
-static inline void set_mtrr(struct i810fb_par *par)
-{
-	par->mtrr_reg = mtrr_add((u32) par->aperture.physical, 
-		 par->aperture.size, MTRR_TYPE_WRCOMB, 1);
-	if (par->mtrr_reg < 0) {
-		printk(KERN_ERR "set_mtrr: unable to set MTRR\n");
-		return;
-	}
-	par->dev_flags |= HAS_MTRR;
-}
-static inline void unset_mtrr(struct i810fb_par *par)
-{
-  	if (par->dev_flags & HAS_MTRR) 
-  		mtrr_del(par->mtrr_reg, (u32) par->aperture.physical, 
-			 par->aperture.size); 
-}
-#else
-#define set_mtrr(x) printk("set_mtrr: MTRR is disabled in the kernel\n")
-
-#define unset_mtrr(x) do { } while (0)
-#endif /* CONFIG_MTRR */
-
 #ifdef CONFIG_FB_I810_GTF
 #define IS_DVT (0)
 #else