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Date: Thu, 4 Jun 2015 09:44:47 -0700
From: "Luis R. Rodriguez" <mcgrof@...not-panic.com>
To: tomi.valkeinen@...com
Cc: plagnioj@...osoft.com, bp@...e.de, hpa@...or.com,
linux-fbdev@...r.kernel.org, luto@...capital.net,
toshi.kani@...com, sbsiddha@...il.com, mingo@...e.hu,
tglx@...utronix.de, jgross@...e.com, daniel.vetter@...ll.ch,
airlied@...hat.com, adaplas@...il.com, robdclark@...il.com,
jg1.han@...sung.com, wsa@...-dreams.de,
linux-kernel@...r.kernel.org, "Luis R. Rodriguez" <mcgrof@...e.com>
Subject: [PATCH v4 2/3] video: fbdev: vesafb: add missing mtrr_del() for added MTRR
From: "Luis R. Rodriguez" <mcgrof@...e.com>
The MTRR added was never being deleted, in order to store the
MTRR cookie we need to make use of the private info->par so we
create a struct for this. This driver was already using the extra
space typically used for info->par for the info->pseudo_palette
which typically used stuffed on driver's own private structs
(the respective info->par), so we just move the pseudo_palette
into the private struct as well.
Cc: Toshi Kani <toshi.kani@...com>
Cc: Suresh Siddha <sbsiddha@...il.com>
Cc: Ingo Molnar <mingo@...e.hu>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Juergen Gross <jgross@...e.com>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Andy Lutomirski <luto@...capital.net>
Cc: Dave Airlie <airlied@...hat.com>
Cc: Antonino Daplas <adaplas@...il.com>
Cc: Rob Clark <robdclark@...il.com>
Cc: Jingoo Han <jg1.han@...sung.com>
Cc: Wolfram Sang <wsa@...-dreams.de>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@...com>
Cc: linux-fbdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
---
drivers/video/fbdev/vesafb.c | 33 ++++++++++++++++++++++++++-------
1 file changed, 26 insertions(+), 7 deletions(-)
diff --git a/drivers/video/fbdev/vesafb.c b/drivers/video/fbdev/vesafb.c
index 191156b..3db3908 100644
--- a/drivers/video/fbdev/vesafb.c
+++ b/drivers/video/fbdev/vesafb.c
@@ -29,6 +29,11 @@
/* --------------------------------------------------------------------- */
+struct vesafb_par {
+ u32 pseudo_palette[256];
+ int wc_cookie;
+};
+
static struct fb_var_screeninfo vesafb_defined = {
.activate = FB_ACTIVATE_NOW,
.height = -1,
@@ -175,7 +180,16 @@ static int vesafb_setcolreg(unsigned regno, unsigned red, unsigned green,
static void vesafb_destroy(struct fb_info *info)
{
+#ifdef CONFIG_MTRR
+ struct vesafb_par *par = info->par;
+#endif
+
fb_dealloc_cmap(&info->cmap);
+
+#ifdef CONFIG_MTRR
+ if (par->wc_cookie >= 0)
+ mtrr_del(par->wc_cookie, 0, 0);
+#endif
if (info->screen_base)
iounmap(info->screen_base);
release_mem_region(info->apertures->ranges[0].base, info->apertures->ranges[0].size);
@@ -228,6 +242,7 @@ static int vesafb_setup(char *options)
static int vesafb_probe(struct platform_device *dev)
{
struct fb_info *info;
+ struct vesafb_par *par;
int i, err;
unsigned int size_vmode;
unsigned int size_remap;
@@ -291,14 +306,14 @@ static int vesafb_probe(struct platform_device *dev)
spaces our resource handlers simply don't know about */
}
- info = framebuffer_alloc(sizeof(u32) * 256, &dev->dev);
+ info = framebuffer_alloc(sizeof(struct vesafb_par), &dev->dev);
if (!info) {
release_mem_region(vesafb_fix.smem_start, size_total);
return -ENOMEM;
}
platform_set_drvdata(dev, info);
- info->pseudo_palette = info->par;
- info->par = NULL;
+ par = info->par;
+ info->pseudo_palette = par->pseudo_palette;
/* set vesafb aperture size for generic probing */
info->apertures = alloc_apertures(1);
@@ -407,17 +422,17 @@ static int vesafb_probe(struct platform_device *dev)
if (mtrr == 3) {
#ifdef CONFIG_MTRR
unsigned int temp_size = size_total;
- int rc;
/* Find the largest power-of-two */
temp_size = roundup_pow_of_two(temp_size);
/* Try and find a power of two to add */
do {
- rc = mtrr_add(vesafb_fix.smem_start, temp_size,
- MTRR_TYPE_WRCOMB, 1);
+ par->wc_cookie = mtrr_add(vesafb_fix.smem_start,
+ temp_size,
+ MTRR_TYPE_WRCOMB, 1);
temp_size >>= 1;
- } while (temp_size >= PAGE_SIZE && rc == -EINVAL);
+ } while (temp_size >= PAGE_SIZE && par->wc_cookie == -EINVAL);
#endif
info->screen_base = ioremap_wc(vesafb_fix.smem_start, vesafb_fix.smem_len);
} else {
@@ -462,6 +477,10 @@ static int vesafb_probe(struct platform_device *dev)
fb_info(info, "%s frame buffer device\n", info->fix.id);
return 0;
err:
+#ifdef CONFIG_MTRR
+ if (par->wc_cookie >= 0)
+ mtrr_del(par->wc_cookie, 0, 0);
+#endif
if (info->screen_base)
iounmap(info->screen_base);
framebuffer_release(info);
--
2.3.2.209.gd67f9d5.dirty
--
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