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Message-Id: <20210827100510.1578493-1-javierm@redhat.com>
Date: Fri, 27 Aug 2021 12:05:10 +0200
From: Javier Martinez Canillas <javierm@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: "H . Peter Anvin" <hpa@...or.com>,
Peter Robinson <pbrobinson@...il.com>,
Thomas Zimmermann <tzimmermann@...e.de>,
Maxime Ripard <mripard@...nel.org>,
Hans de Goede <hdegoede@...hat.com>,
Daniel Vetter <daniel@...ll.ch>, x86@...nel.org,
dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
David Airlie <airlied@...ux.ie>,
Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
Borislav Petkov <bp@...en8.de>, Ingo Molnar <mingo@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Javier Martinez Canillas <javierm@...hat.com>
Subject: [RFC PATCH 2/4] fbdev: Move framebuffer_{alloc,release}() functions to fbmem.c
The framebuffer_alloc() and framebuffer_release() functions are much more
related with the functions in drivers/fbdev/core/fbmem.c than the ones in
drivers/fbdev/core/fbsysfs.c, that are only to manage sysfs attributes.
Signed-off-by: Javier Martinez Canillas <javierm@...hat.com>
---
drivers/video/fbdev/core/fbmem.c | 65 +++++++++++++++++++++++++++
drivers/video/fbdev/core/fbsysfs.c | 71 ------------------------------
2 files changed, 65 insertions(+), 71 deletions(-)
diff --git a/drivers/video/fbdev/core/fbmem.c b/drivers/video/fbdev/core/fbmem.c
index d886582c0a4..2b22e46b815 100644
--- a/drivers/video/fbdev/core/fbmem.c
+++ b/drivers/video/fbdev/core/fbmem.c
@@ -57,6 +57,71 @@ bool fb_center_logo __read_mostly;
int fb_logo_count __read_mostly = -1;
+/**
+ * framebuffer_alloc - creates a new frame buffer info structure
+ *
+ * @size: size of driver private data, can be zero
+ * @dev: pointer to the device for this fb, this can be NULL
+ *
+ * Creates a new frame buffer info structure. Also reserves @size bytes
+ * for driver private data (info->par). info->par (if any) will be
+ * aligned to sizeof(long).
+ *
+ * Returns the new structure, or NULL if an error occurred.
+ *
+ */
+struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
+{
+#define BYTES_PER_LONG (BITS_PER_LONG/8)
+#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
+ int fb_info_size = sizeof(struct fb_info);
+ struct fb_info *info;
+ char *p;
+
+ if (size)
+ fb_info_size += PADDING;
+
+ p = kzalloc(fb_info_size + size, GFP_KERNEL);
+
+ if (!p)
+ return NULL;
+
+ info = (struct fb_info *) p;
+
+ if (size)
+ info->par = p + fb_info_size;
+
+ info->device = dev;
+ info->fbcon_rotate_hint = -1;
+
+#if IS_ENABLED(CONFIG_FB_BACKLIGHT)
+ mutex_init(&info->bl_curve_mutex);
+#endif
+
+ return info;
+#undef PADDING
+#undef BYTES_PER_LONG
+}
+EXPORT_SYMBOL(framebuffer_alloc);
+
+/**
+ * framebuffer_release - marks the structure available for freeing
+ *
+ * @info: frame buffer info structure
+ *
+ * Drop the reference count of the device embedded in the
+ * framebuffer info structure.
+ *
+ */
+void framebuffer_release(struct fb_info *info)
+{
+ if (!info)
+ return;
+ kfree(info->apertures);
+ kfree(info);
+}
+EXPORT_SYMBOL(framebuffer_release);
+
static struct fb_info *get_fb_info(unsigned int idx)
{
struct fb_info *fb_info;
diff --git a/drivers/video/fbdev/core/fbsysfs.c b/drivers/video/fbdev/core/fbsysfs.c
index a040d6bd6c3..2c1e3f0effe 100644
--- a/drivers/video/fbdev/core/fbsysfs.c
+++ b/drivers/video/fbdev/core/fbsysfs.c
@@ -5,12 +5,6 @@
* Copyright (c) 2004 James Simmons <jsimmons@...radead.org>
*/
-/*
- * Note: currently there's only stubs for framebuffer_alloc and
- * framebuffer_release here. The reson for that is that until all drivers
- * are converted to use it a sysfsification will open OOPSable races.
- */
-
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/fb.h>
@@ -20,71 +14,6 @@
#define FB_SYSFS_FLAG_ATTR 1
-/**
- * framebuffer_alloc - creates a new frame buffer info structure
- *
- * @size: size of driver private data, can be zero
- * @dev: pointer to the device for this fb, this can be NULL
- *
- * Creates a new frame buffer info structure. Also reserves @size bytes
- * for driver private data (info->par). info->par (if any) will be
- * aligned to sizeof(long).
- *
- * Returns the new structure, or NULL if an error occurred.
- *
- */
-struct fb_info *framebuffer_alloc(size_t size, struct device *dev)
-{
-#define BYTES_PER_LONG (BITS_PER_LONG/8)
-#define PADDING (BYTES_PER_LONG - (sizeof(struct fb_info) % BYTES_PER_LONG))
- int fb_info_size = sizeof(struct fb_info);
- struct fb_info *info;
- char *p;
-
- if (size)
- fb_info_size += PADDING;
-
- p = kzalloc(fb_info_size + size, GFP_KERNEL);
-
- if (!p)
- return NULL;
-
- info = (struct fb_info *) p;
-
- if (size)
- info->par = p + fb_info_size;
-
- info->device = dev;
- info->fbcon_rotate_hint = -1;
-
-#if IS_ENABLED(CONFIG_FB_BACKLIGHT)
- mutex_init(&info->bl_curve_mutex);
-#endif
-
- return info;
-#undef PADDING
-#undef BYTES_PER_LONG
-}
-EXPORT_SYMBOL(framebuffer_alloc);
-
-/**
- * framebuffer_release - marks the structure available for freeing
- *
- * @info: frame buffer info structure
- *
- * Drop the reference count of the device embedded in the
- * framebuffer info structure.
- *
- */
-void framebuffer_release(struct fb_info *info)
-{
- if (!info)
- return;
- kfree(info->apertures);
- kfree(info);
-}
-EXPORT_SYMBOL(framebuffer_release);
-
static int activate(struct fb_info *fb_info, struct fb_var_screeninfo *var)
{
int err;
--
2.31.1
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