merge 2.6.13-rc4 with ACPI's to-linus tree

3 files changed, 47 insertions, 20 deletions

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 40784a944d05..d2e19f6dd72c 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -80,10 +80,12 @@ EXPORT_SYMBOL(fb_get_color_depth);
  */
 void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height)
 {
-        int i;
+        int i, j;
 
         for (i = height; i--; ) {
-                memcpy(dst, src, s_pitch);
+                /* s_pitch is a few bytes at the most, memcpy is suboptimal */
+                for (j = 0; j < s_pitch; j++)
+                        dst[j] = src[j];
                 src += s_pitch;
                 dst += d_pitch;
         }
diff --git a/drivers/video/fbsysfs.c b/drivers/video/fbsysfs.c
index 63b505cce4ec..ed1d4d1ac4f7 100644
--- a/drivers/video/fbsysfs.c
+++ b/drivers/video/fbsysfs.c
@@ -244,15 +244,15 @@ static ssize_t show_virtual(struct class_device *class_device, char *buf)
 
 /* Format for cmap is "%02x%c%4x%4x%4x\n" */
 /* %02x entry %c transp %4x red %4x blue %4x green \n */
-/* 255 rows at 16 chars equals 4096 */
-/* PAGE_SIZE can be 4096 or larger */
+/* 256 rows at 16 chars equals 4096, the normal page size */
+/* the code will automatically adjust for different page sizes */
 static ssize_t store_cmap(struct class_device *class_device, const char *buf,
                           size_t count)
 {
         struct fb_info *fb_info = (struct fb_info *)class_get_devdata(class_device);
         int rc, i, start, length, transp = 0;
 
-        if ((count > 4096) || ((count % 16) != 0) || (PAGE_SIZE < 4096))
+        if ((count > PAGE_SIZE) || ((count % 16) != 0))
                 return -EINVAL;
 
         if (!fb_info->fbops->fb_setcolreg && !fb_info->fbops->fb_setcmap)
@@ -317,18 +317,18 @@ static ssize_t show_cmap(struct class_device *class_device, char *buf)
            !fb_info->cmap.green)
                 return -EINVAL;
 
-        if (PAGE_SIZE < 4096)
+        if (fb_info->cmap.len > PAGE_SIZE / 16)
                 return -EINVAL;
 
         /* don't mess with the format, the buffer is PAGE_SIZE */
-        /* 255 entries at 16 chars per line equals 4096 = PAGE_SIZE */
+        /* 256 entries at 16 chars per line equals 4096 = PAGE_SIZE */
         for (i = 0; i < fb_info->cmap.len; i++) {
-                sprintf(&buf[ i * 16], "%02x%c%4x%4x%4x\n", i + fb_info->cmap.start,
+                snprintf(&buf[ i * 16], PAGE_SIZE - i * 16, "%02x%c%4x%4x%4x\n", i + fb_info->cmap.start,
                         ((fb_info->cmap.transp && fb_info->cmap.transp[i]) ? '*' : ' '),
                         fb_info->cmap.red[i], fb_info->cmap.blue[i],
                         fb_info->cmap.green[i]);
         }
-        return 4096;
+        return 16 * fb_info->cmap.len;
 }
 
 static ssize_t store_blank(struct class_device *class_device, const char * buf,
diff --git a/drivers/video/vesafb.c b/drivers/video/vesafb.c
index 9ed1a931dd31..a272592b0373 100644
--- a/drivers/video/vesafb.c
+++ b/drivers/video/vesafb.c
@@ -45,7 +45,7 @@ static struct fb_fix_screeninfo vesafb_fix __initdata = {
 };
 
 static int             inverse   = 0;
-static int             mtrr      = 1;
+static int             mtrr      = 3; /* default to write-combining */
 static int             vram_remap __initdata = 0; /* Set amount of memory to be used */
 static int             vram_total __initdata = 0; /* Set total amount of memory */
 static int             pmi_setpal = 0;  /* pmi for palette changes ??? */
@@ -204,8 +204,8 @@ static int __init vesafb_setup(char *options)
                         pmi_setpal=0;
                 else if (! strcmp(this_opt, "pmipal"))
                         pmi_setpal=1;
-                else if (! strcmp(this_opt, "mtrr"))
-                        mtrr=1;
+                else if (! strncmp(this_opt, "mtrr:", 5))
+                        mtrr = simple_strtoul(this_opt+5, NULL, 0);
                 else if (! strcmp(this_opt, "nomtrr"))
                         mtrr=0;
                 else if (! strncmp(this_opt, "vtotal:", 7))
@@ -387,14 +387,39 @@ static int __init vesafb_probe(struct device *device)
 
         if (mtrr) {
                 unsigned int temp_size = size_total;
-                /* Find the largest power-of-two */
-                while (temp_size & (temp_size - 1))
-                        temp_size &= (temp_size - 1);
-
-                /* Try and find a power of two to add */
-                while (temp_size > PAGE_SIZE &&
-                        mtrr_add(vesafb_fix.smem_start, temp_size, MTRR_TYPE_WRCOMB, 1)==-EINVAL) {
-                        temp_size >>= 1;
+                unsigned int type = 0;
+
+                switch (mtrr) {
+                case 1:
+                        type = MTRR_TYPE_UNCACHABLE;
+                        break;
+                case 2:
+                        type = MTRR_TYPE_WRBACK;
+                        break;
+                case 3:
+                        type = MTRR_TYPE_WRCOMB;
+                        break;
+                case 4:
+                        type = MTRR_TYPE_WRTHROUGH;
+                        break;
+                default:
+                        type = 0;
+                        break;
+                }
+
+                if (type) {
+                        int rc;
+
+                        /* Find the largest power-of-two */
+                        while (temp_size & (temp_size - 1))
+                                temp_size &= (temp_size - 1);
+
+                        /* Try and find a power of two to add */
+                        do {
+                                rc = mtrr_add(vesafb_fix.smem_start, temp_size,
+                                              type, 1);
+                                temp_size >>= 1;
+                        } while (temp_size >= PAGE_SIZE && rc == -EINVAL);
                 }
         }