[PATCH] fbdev: stack reduction

Shrink the stack when calling the drawing alignment functions.

Signed-off-by: James Simmons <jsimmons@www.infradead.org>
Cc: "Antonino A. Daplas" <adaplas@hotpop.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/video/console/bitblit.c b/drivers/video/console/bitblit.c
index 4eef207..3c73157 100644 (file)
--- a/drivers/video/console/bitblit.c
+++ b/drivers/video/console/bitblit.c
@@ -157,9 +157,9 @@ static void bit_putcs(struct vc_data *vc, struct fb_info *info,
                                        src = buf;
                                }
 
-                               fb_sysmove_buf_unaligned(info, &info->pixmap, dst, pitch,
-                                              src, idx, image.height,
-                                              shift_high, shift_low, mod);
+                               fb_pad_unaligned_buffer(dst, pitch, src, idx,
+                                               image.height, shift_high,
+                                               shift_low, mod);
                                shift_low += mod;
                                dst += (shift_low >= 8) ? width : width - 1;
                                shift_low &= 7;
@@ -175,8 +175,7 @@ static void bit_putcs(struct vc_data *vc, struct fb_info *info,
                                        src = buf;
                                }
 
-                               fb_sysmove_buf_aligned(info, &info->pixmap, dst, pitch,
-                                            src, idx, image.height);
+                               fb_pad_aligned_buffer(dst, pitch, src, idx, image.height);
                                dst += width;
                        }
                }

diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 78907a8..6f871a8 100644 (file)
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -78,9 +78,7 @@ EXPORT_SYMBOL(fb_get_color_depth);
 /*
  * Data padding functions.
  */
-void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
-                           u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
-                           u32 height)
+void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height)
 {
        int i;
 
@@ -90,12 +88,10 @@ void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
                dst += d_pitch;
        }
 }
-EXPORT_SYMBOL(fb_sysmove_buf_aligned);
+EXPORT_SYMBOL(fb_pad_aligned_buffer);
 
-void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
-                             u8 *dst, u32 d_pitch, u8 *src, u32 idx,
-                             u32 height, u32 shift_high, u32 shift_low,
-                             u32 mod)
+void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx, u32 height,
+                               u32 shift_high, u32 shift_low, u32 mod)
 {
        u8 mask = (u8) (0xfff << shift_high), tmp;
        int i, j;
@@ -122,7 +118,7 @@ void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
                dst += d_pitch;
        }
 }
-EXPORT_SYMBOL(fb_sysmove_buf_unaligned);
+EXPORT_SYMBOL(fb_pad_unaligned_buffer);
 
 /*
  * we need to lock this section since fb_cursor

diff --git a/drivers/video/nvidia/nvidia.c b/drivers/video/nvidia/nvidia.c
index 47733f5..266ff5d 100644 (file)
--- a/drivers/video/nvidia/nvidia.c
+++ b/drivers/video/nvidia/nvidia.c
@@ -516,9 +516,9 @@ static struct backlight_controller nvidia_backlight_controller = {
 static void nvidiafb_load_cursor_image(struct nvidia_par *par, u8 * data8,
                                       u16 bg, u16 fg, u32 w, u32 h)
 {
+       u32 *data = (u32 *) data8;
        int i, j, k = 0;
        u32 b, tmp;
-       u32 *data = (u32 *) data8;
 
        w = (w + 1) & ~1;
 
@@ -890,11 +890,11 @@ static int nvidiafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 {
        struct nvidia_par *par = info->par;
        u8 data[MAX_CURS * MAX_CURS / 8];
-       u16 fg, bg;
        int i, set = cursor->set;
+       u16 fg, bg;
 
        if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
-               return soft_cursor(info, cursor);
+               return -ENXIO;
 
        NVShowHideCursor(par, 0);
 
@@ -931,21 +931,18 @@ static int nvidiafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
                if (src) {
                        switch (cursor->rop) {
                        case ROP_XOR:
-                               for (i = 0; i < s_pitch * cursor->image.height;
-                                    i++)
+                               for (i = 0; i < s_pitch * cursor->image.height; i++)
                                        src[i] = dat[i] ^ msk[i];
                                break;
                        case ROP_COPY:
                        default:
-                               for (i = 0; i < s_pitch * cursor->image.height;
-                                    i++)
+                               for (i = 0; i < s_pitch * cursor->image.height; i++)
                                        src[i] = dat[i] & msk[i];
                                break;
                        }
 
-                       fb_sysmove_buf_aligned(info, &info->pixmap, data,
-                                              d_pitch, src, s_pitch,
-                                              cursor->image.height);
+                       fb_pad_aligned_buffer(data, d_pitch, src, s_pitch,
+                                               cursor->image.height);
 
                        bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
                            ((info->cmap.green[bg_idx] & 0xf8) << 2) |

diff --git a/drivers/video/riva/fbdev.c b/drivers/video/riva/fbdev.c
index b0c886d..7540f60 100644 (file)
--- a/drivers/video/riva/fbdev.c
+++ b/drivers/video/riva/fbdev.c
@@ -1582,12 +1582,11 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
 {
        struct riva_par *par = (struct riva_par *) info->par;
        u8 data[MAX_CURS * MAX_CURS/8];
-       u16 fg, bg;
        int i, set = cursor->set;
+       u16 fg, bg;
 
-       if (cursor->image.width > MAX_CURS ||
-           cursor->image.height > MAX_CURS)
-               return soft_cursor(info, cursor);
+       if (cursor->image.width > MAX_CURS || cursor->image.height > MAX_CURS)
+               return -ENXIO;
 
        par->riva.ShowHideCursor(&par->riva, 0);
 
@@ -1625,21 +1624,18 @@ static int rivafb_cursor(struct fb_info *info, struct fb_cursor *cursor)
                if (src) {
                        switch (cursor->rop) {
                        case ROP_XOR:
-                               for (i = 0; i < s_pitch * cursor->image.height;
-                                    i++)
+                               for (i = 0; i < s_pitch * cursor->image.height; i++)
                                        src[i] = dat[i] ^ msk[i];
                                break;
                        case ROP_COPY:
                        default:
-                               for (i = 0; i < s_pitch * cursor->image.height;
-                                    i++)
+                               for (i = 0; i < s_pitch * cursor->image.height; i++)
                                        src[i] = dat[i] & msk[i];
                                break;
                        }
 
-                       fb_sysmove_buf_aligned(info, &info->pixmap, data,
-                                              d_pitch, src, s_pitch,
-                                              cursor->image.height);
+                       fb_pad_aligned_buffer(data, d_pitch, src, s_pitch,
+                                               cursor->image.height);
 
                        bg = ((info->cmap.red[bg_idx] & 0xf8) << 7) |
                                ((info->cmap.green[bg_idx] & 0xf8) << 2) |

diff --git a/drivers/video/softcursor.c b/drivers/video/softcursor.c
index a6c5ca8..229c4bc 100644 (file)
--- a/drivers/video/softcursor.c
+++ b/drivers/video/softcursor.c
@@ -58,13 +58,10 @@ int soft_cursor(struct fb_info *info, struct fb_cursor *cursor)
        } else 
                memcpy(src, image->data, dsize);
        
-       fb_sysmove_buf_aligned(info, &info->pixmap, dst, d_pitch, src,
-                               s_pitch, image->height);
-
+       fb_pad_aligned_buffer(dst, d_pitch, src, s_pitch, image->height);
        image->data = dst;
        info->fbops->fb_imageblit(info, image);
        kfree(src);
-
        return 0;
 }
 

diff --git a/include/linux/fb.h b/include/linux/fb.h
index e149428..bc24bee 100644 (file)
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -816,12 +816,9 @@ extern int unregister_framebuffer(struct fb_info *fb_info);
 extern int fb_prepare_logo(struct fb_info *fb_info);
 extern int fb_show_logo(struct fb_info *fb_info);
 extern char* fb_get_buffer_offset(struct fb_info *info, struct fb_pixmap *buf, u32 size);
-extern void fb_sysmove_buf_unaligned(struct fb_info *info, struct fb_pixmap *buf,
-                               u8 *dst, u32 d_pitch, u8 *src, u32 idx,
+extern void fb_pad_unaligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 idx,
                                u32 height, u32 shift_high, u32 shift_low, u32 mod);
-extern void fb_sysmove_buf_aligned(struct fb_info *info, struct fb_pixmap *buf,
-                               u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch,
-                               u32 height);
+extern void fb_pad_aligned_buffer(u8 *dst, u32 d_pitch, u8 *src, u32 s_pitch, u32 height);
 extern void fb_set_suspend(struct fb_info *info, int state);
 extern int fb_get_color_depth(struct fb_var_screeninfo *var);
 extern int fb_get_options(char *name, char **option);