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Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Browse source 
Pull x86 mm updates from Ingo Molnar:
 "The dominant change in this cycle was the continued work to isolate
  kernel drivers from MTRR legacies: this tree gets rid of all kernel
  internal driver interfaces to MTRRs (mostly by rewriting it to proper
  PAT interfaces), the only access left is the /proc/mtrr ABI.

  This work was done by Luis R Rodriguez.

  There's also some related PCI interface additions for which I've
  Cc:-ed Bjorn"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits)
  x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del()
  s390/io: Add pci_iomap_wc() and pci_iomap_wc_range()
  drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style
  drivers/video/fbdev/vt8623fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/s3fb: Use arch_phys_wc_add() and pci_iomap_wc()
  drivers/video/fbdev/arkfb.c: Use arch_phys_wc_add() and pci_iomap_wc()
  PCI: Add pci_iomap_wc() variants
  drivers/video/fbdev/gxt4500: Use pci_ioremap_wc_bar() to map framebuffer
  drivers/video/fbdev/kyrofb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  drivers/video/fbdev/i740fb: Use arch_phys_wc_add() and pci_ioremap_wc_bar()
  PCI: Add pci_ioremap_wc_bar()
  x86/mm: Make kernel/check.c explicitly non-modular
  x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular
  x86/mm/pat: Add comments to cachemode translation tables
  arch/*/io.h: Add ioremap_uc() to all architectures
  drivers/video/fbdev/atyfb: Use arch_phys_wc_add() and ioremap_wc()
  drivers/video/fbdev/atyfb: Replace MTRR UC hole with strong UC
  drivers/video/fbdev/atyfb: Clarify ioremap() base and length used
  drivers/video/fbdev/atyfb: Carve out framebuffer length fudging into a helper
  x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default
  ...
This commit is contained in:
Linus Torvalds 2015-09-01 10:07:40 -07:00
commit 25525bea46
32 changed files with 254 additions and 222 deletions
Download patch file Download diff file Expand all files Collapse all files

36
drivers/video/fbdev/arkfb.c
View file

@ -26,13 +26,9 @@
#include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */
#include <video/vga.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
struct arkfb_info {
int mclk_freq;
int mtrr_reg;
int wc_cookie;
struct dac_info *dac;
struct vgastate state;
@ -102,10 +98,6 @@ static const struct svga_timing_regs ark_timing_regs = {
static char *mode_option = "640x480-8@60";
#ifdef CONFIG_MTRR
static int mtrr = 1;
#endif
MODULE_AUTHOR("(c) 2007 Ondrej Zajicek <[email protected]>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("fbdev driver for ARK 2000PV");
@ -115,11 +107,6 @@ MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
module_param_named(mode, mode_option, charp, 0444);
MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)");
#ifdef CONFIG_MTRR
module_param(mtrr, int, 0444);
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
#endif
static int threshold = 4;
module_param(threshold, int, 0644);
@ -1002,7 +989,7 @@ static int ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
info->fix.smem_len = pci_resource_len(dev, 0);
/* Map physical IO memory address into kernel space */
info->screen_base = pci_iomap(dev, 0, 0);
info->screen_base = pci_iomap_wc(dev, 0, 0);
if (! info->screen_base) {
rc = -ENOMEM;
dev_err(info->device, "iomap for framebuffer failed\n");
@ -1057,14 +1044,8 @@ static int ark_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* Record a reference to the driver data */
pci_set_drvdata(dev, info);
#ifdef CONFIG_MTRR
if (mtrr) {
par->mtrr_reg = -1;
par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
}
#endif
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0;
/* Error handling */
@ -1092,14 +1073,7 @@ static void ark_pci_remove(struct pci_dev *dev)
if (info) {
struct arkfb_info *par = info->par;
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
#endif
arch_phys_wc_del(par->wc_cookie);
dac_release(par->dac);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);

5
drivers/video/fbdev/aty/atyfb.h
View file

@ -182,10 +182,7 @@ struct atyfb_par {
unsigned long irq_flags;
unsigned int irq;
spinlock_t int_lock;
#ifdef CONFIG_MTRR
int mtrr_aper;
int mtrr_reg;
#endif
int wc_cookie;
u32 mem_cntl;
struct crtc saved_crtc;
union aty_pll saved_pll;

109
drivers/video/fbdev/aty/atyfb_base.c
View file

@ -98,9 +98,6 @@
#ifdef CONFIG_PMAC_BACKLIGHT
#include <asm/backlight.h>
#endif
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
/*
* Debug flags.
@ -303,9 +300,7 @@ static struct fb_ops atyfb_ops = {
};
static bool noaccel;
#ifdef CONFIG_MTRR
static bool nomtrr;
#endif
static int vram;
static int pll;
static int mclk;
@ -427,6 +422,20 @@ static struct {
#endif /* CONFIG_FB_ATY_CT */
};
/*
* Last page of 8 MB (4 MB on ISA) aperture is MMIO,
* unless the auxiliary register aperture is used.
*/
static void aty_fudge_framebuffer_len(struct fb_info *info)
{
struct atyfb_par *par = (struct atyfb_par *) info->par;
if (!par->aux_start &&
(info->fix.smem_len == 0x800000 ||
(par->bus_type == ISA && info->fix.smem_len == 0x400000)))
info->fix.smem_len -= GUI_RESERVE;
}
static int correct_chipset(struct atyfb_par *par)
{
u8 rev;
@ -2603,14 +2612,7 @@ static int aty_init(struct fb_info *info)
if (par->pll_ops->resume_pll)
par->pll_ops->resume_pll(info, &par->pll);
/*
* Last page of 8 MB (4 MB on ISA) aperture is MMIO,
* unless the auxiliary register aperture is used.
*/
if (!par->aux_start &&
(info->fix.smem_len == 0x800000 ||
(par->bus_type == ISA && info->fix.smem_len == 0x400000)))
info->fix.smem_len -= GUI_RESERVE;
aty_fudge_framebuffer_len(info);
/*
* Disable register access through the linear aperture
@ -2621,25 +2623,13 @@ static int aty_init(struct fb_info *info)
aty_st_le32(BUS_CNTL, aty_ld_le32(BUS_CNTL, par) |
BUS_APER_REG_DIS, par);
#ifdef CONFIG_MTRR
par->mtrr_aper = -1;
par->mtrr_reg = -1;
if (!nomtrr) {
/* Cover the whole resource. */
par->mtrr_aper = mtrr_add(par->res_start, par->res_size,
MTRR_TYPE_WRCOMB, 1);
if (par->mtrr_aper >= 0 && !par->aux_start) {
/* Make a hole for mmio. */
par->mtrr_reg = mtrr_add(par->res_start + 0x800000 -
GUI_RESERVE, GUI_RESERVE,
MTRR_TYPE_UNCACHABLE, 1);
if (par->mtrr_reg < 0) {
mtrr_del(par->mtrr_aper, 0, 0);
par->mtrr_aper = -1;
}
}
}
#endif
if (!nomtrr)
/*
* Only the ioremap_wc()'d area will get WC here
* since ioremap_uc() was used on the entire PCI BAR.
*/
par->wc_cookie = arch_phys_wc_add(par->res_start,
par->res_size);
info->fbops = &atyfb_ops;
info->pseudo_palette = par->pseudo_palette;
@ -2767,17 +2757,8 @@ aty_init_exit:
/* restore video mode */
aty_set_crtc(par, &par->saved_crtc);
par->pll_ops->set_pll(info, &par->saved_pll);
arch_phys_wc_del(par->wc_cookie);
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
if (par->mtrr_aper >= 0) {
mtrr_del(par->mtrr_aper, 0, 0);
par->mtrr_aper = -1;
}
#endif
return ret;
}
@ -3459,7 +3440,11 @@ static int atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info,
}
info->fix.mmio_start = raddr;
par->ati_regbase = ioremap(info->fix.mmio_start, 0x1000);
/*
* By using strong UC we force the MTRR to never have an
* effect on the MMIO region on both non-PAT and PAT systems.
*/
par->ati_regbase = ioremap_uc(info->fix.mmio_start, 0x1000);
if (par->ati_regbase == NULL)
return -ENOMEM;
@ -3482,7 +3467,24 @@ static int atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info,
/* Map in frame buffer */
info->fix.smem_start = addr;
info->screen_base = ioremap(addr, 0x800000);
/*
* The framebuffer is not always 8 MiB, that's just the size of the
* PCI BAR. We temporarily abuse smem_len here to store the size
* of the BAR. aty_init() will later correct it to match the actual
* framebuffer size.
*
* On devices that don't have the auxiliary register aperture, the
* registers are housed at the top end of the framebuffer PCI BAR.
* aty_fudge_framebuffer_len() is used to reduce smem_len to not
* overlap with the registers.
*/
info->fix.smem_len = 0x800000;
aty_fudge_framebuffer_len(info);
info->screen_base = ioremap_wc(info->fix.smem_start,
info->fix.smem_len);
if (info->screen_base == NULL) {
ret = -ENOMEM;
goto atyfb_setup_generic_fail;
@ -3554,6 +3556,7 @@ static int atyfb_pci_probe(struct pci_dev *pdev,
return -ENOMEM;
}
par = info->par;
par->bus_type = PCI;
info->fix = atyfb_fix;
info->device = &pdev->dev;
par->pci_id = pdev->device;
@ -3655,7 +3658,8 @@ static int __init atyfb_atari_probe(void)
* Map the video memory (physical address given)
* to somewhere in the kernel address space.
*/
info->screen_base = ioremap(phys_vmembase[m64_num], phys_size[m64_num]);
info->screen_base = ioremap_wc(phys_vmembase[m64_num],
phys_size[m64_num]);
info->fix.smem_start = (unsigned long)info->screen_base; /* Fake! */
par->ati_regbase = ioremap(phys_guiregbase[m64_num], 0x10000) +
0xFC00ul;
@ -3721,17 +3725,8 @@ static void atyfb_remove(struct fb_info *info)
if (M64_HAS(MOBIL_BUS))
aty_bl_exit(info->bl_dev);
#endif
arch_phys_wc_del(par->wc_cookie);
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
if (par->mtrr_aper >= 0) {
mtrr_del(par->mtrr_aper, 0, 0);
par->mtrr_aper = -1;
}
#endif
#ifndef __sparc__
if (par->ati_regbase)
iounmap(par->ati_regbase);
@ -3847,10 +3842,8 @@ static int __init atyfb_setup(char *options)
while ((this_opt = strsep(&options, ",")) != NULL) {
if (!strncmp(this_opt, "noaccel", 7)) {
noaccel = 1;
#ifdef CONFIG_MTRR
} else if (!strncmp(this_opt, "nomtrr", 6)) {
nomtrr = 1;
#endif
} else if (!strncmp(this_opt, "vram:", 5))
vram = simple_strtoul(this_opt + 5, NULL, 0);
else if (!strncmp(this_opt, "pll:", 4))
@ -4020,7 +4013,5 @@ module_param(comp_sync, int, 0);
MODULE_PARM_DESC(comp_sync, "Set composite sync signal to low (0) or high (1)");
module_param(mode, charp, 0);
MODULE_PARM_DESC(mode, "Specify resolution as \"<xres>x<yres>[-<bpp>][@<refresh>]\" ");
#ifdef CONFIG_MTRR
module_param(nomtrr, bool, 0);
MODULE_PARM_DESC(nomtrr, "bool: disable use of MTRR registers");
#endif

2
drivers/video/fbdev/gxt4500.c
View file

@ -662,7 +662,7 @@ static int gxt4500_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
info->fix.smem_start = fb_phys;
info->fix.smem_len = pci_resource_len(pdev, 1);
info->screen_base = pci_ioremap_bar(pdev, 1);
info->screen_base = pci_ioremap_wc_bar(pdev, 1);
if (!info->screen_base) {
dev_err(&pdev->dev, "gxt4500: cannot map framebuffer\n");
goto err_unmap_regs;

35
drivers/video/fbdev/i740fb.c
View file

@ -27,24 +27,15 @@
#include <linux/console.h>
#include <video/vga.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include "i740_reg.h"
static char *mode_option;
#ifdef CONFIG_MTRR
static int mtrr = 1;
#endif
struct i740fb_par {
unsigned char __iomem *regs;
bool has_sgram;
#ifdef CONFIG_MTRR
int mtrr_reg;
#endif
int wc_cookie;
bool ddc_registered;
struct i2c_adapter ddc_adapter;
struct i2c_algo_bit_data ddc_algo;
@ -1040,7 +1031,7 @@ static int i740fb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
goto err_request_regions;
}
info->screen_base = pci_ioremap_bar(dev, 0);
info->screen_base = pci_ioremap_wc_bar(dev, 0);
if (!info->screen_base) {
dev_err(info->device, "error remapping base\n");
ret = -ENOMEM;
@ -1144,13 +1135,9 @@ static int i740fb_probe(struct pci_dev *dev, const struct pci_device_id *ent)
fb_info(info, "%s frame buffer device\n", info->fix.id);
pci_set_drvdata(dev, info);
#ifdef CONFIG_MTRR
if (mtrr) {
par->mtrr_reg = -1;
par->mtrr_reg = mtrr_add(info->fix.smem_start,
info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
}
#endif
if (mtrr)
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0;
err_reg_framebuffer:
@ -1177,13 +1164,7 @@ static void i740fb_remove(struct pci_dev *dev)
if (info) {
struct i740fb_par *par = info->par;
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
#endif
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
if (par->ddc_registered)
@ -1287,10 +1268,8 @@ static int __init i740fb_setup(char *options)
while ((opt = strsep(&options, ",")) != NULL) {
if (!*opt)
continue;
#ifdef CONFIG_MTRR
else if (!strncmp(opt, "mtrr:", 5))
mtrr = simple_strtoul(opt + 5, NULL, 0);
#endif
else
mode_option = opt;
}
@ -1327,7 +1306,5 @@ MODULE_DESCRIPTION("fbdev driver for Intel740");
module_param(mode_option, charp, 0444);
MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
#ifdef CONFIG_MTRR
module_param(mtrr, int, 0444);
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
#endif

33
drivers/video/fbdev/kyro/fbdev.c
View file

@ -22,9 +22,6 @@
#include <linux/pci.h>
#include <asm/io.h>
#include <linux/uaccess.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
#include <video/kyro.h>
@ -84,9 +81,7 @@ static device_info_t deviceInfo;
static char *mode_option = NULL;
static int nopan = 0;
static int nowrap = 1;
#ifdef CONFIG_MTRR
static int nomtrr = 0;
#endif
/* PCI driver prototypes */
static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
@ -570,10 +565,8 @@ static int __init kyrofb_setup(char *options)
nopan = 1;
} else if (strcmp(this_opt, "nowrap") == 0) {
nowrap = 1;
#ifdef CONFIG_MTRR
} else if (strcmp(this_opt, "nomtrr") == 0) {
nomtrr = 1;
#endif
} else {
mode_option = this_opt;
}
@ -691,17 +684,16 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
currentpar->regbase = deviceInfo.pSTGReg =
ioremap_nocache(kyro_fix.mmio_start, kyro_fix.mmio_len);
if (!currentpar->regbase)
goto out_free_fb;
info->screen_base = ioremap_nocache(kyro_fix.smem_start,
kyro_fix.smem_len);
info->screen_base = pci_ioremap_wc_bar(pdev, 0);
if (!info->screen_base)
goto out_unmap_regs;
#ifdef CONFIG_MTRR
if (!nomtrr)
currentpar->mtrr_handle =
mtrr_add(kyro_fix.smem_start,
kyro_fix.smem_len,
MTRR_TYPE_WRCOMB, 1);
#endif
currentpar->wc_cookie = arch_phys_wc_add(kyro_fix.smem_start,
kyro_fix.smem_len);
kyro_fix.ypanstep = nopan ? 0 : 1;
kyro_fix.ywrapstep = nowrap ? 0 : 1;
@ -745,8 +737,10 @@ static int kyrofb_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return 0;
out_unmap:
iounmap(currentpar->regbase);
iounmap(info->screen_base);
out_unmap_regs:
iounmap(currentpar->regbase);
out_free_fb:
framebuffer_release(info);
return -EINVAL;
@ -770,12 +764,7 @@ static void kyrofb_remove(struct pci_dev *pdev)
iounmap(info->screen_base);
iounmap(par->regbase);
#ifdef CONFIG_MTRR
if (par->mtrr_handle)
mtrr_del(par->mtrr_handle,
info->fix.smem_start,
info->fix.smem_len);
#endif
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
framebuffer_release(info);

35
drivers/video/fbdev/s3fb.c
View file

@ -28,13 +28,9 @@
#include <linux/i2c.h>
#include <linux/i2c-algo-bit.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
struct s3fb_info {
int chip, rev, mclk_freq;
int mtrr_reg;
int wc_cookie;
struct vgastate state;
struct mutex open_lock;
unsigned int ref_count;
@ -154,11 +150,7 @@ static const struct svga_timing_regs s3_timing_regs = {
static char *mode_option;
#ifdef CONFIG_MTRR
static int mtrr = 1;
#endif
static int fasttext = 1;
@ -170,11 +162,8 @@ module_param(mode_option, charp, 0444);
MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
module_param_named(mode, mode_option, charp, 0444);
MODULE_PARM_DESC(mode, "Default video mode ('640x480-8@60', etc) (deprecated)");
#ifdef CONFIG_MTRR
module_param(mtrr, int, 0444);
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
#endif
module_param(fasttext, int, 0644);
MODULE_PARM_DESC(fasttext, "Enable S3 fast text mode (1=enable, 0=disable, default=1)");
@ -1168,7 +1157,7 @@ static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
info->fix.smem_len = pci_resource_len(dev, 0);
/* Map physical IO memory address into kernel space */
info->screen_base = pci_iomap(dev, 0, 0);
info->screen_base = pci_iomap_wc(dev, 0, 0);
if (! info->screen_base) {
rc = -ENOMEM;
dev_err(info->device, "iomap for framebuffer failed\n");
@ -1365,12 +1354,9 @@ static int s3_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* Record a reference to the driver data */
pci_set_drvdata(dev, info);
#ifdef CONFIG_MTRR
if (mtrr) {
par->mtrr_reg = -1;
par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
}
#endif
if (mtrr)
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0;
@ -1405,14 +1391,7 @@ static void s3_pci_remove(struct pci_dev *dev)
if (info) {
par = info->par;
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
#endif
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);
@ -1551,10 +1530,8 @@ static int __init s3fb_setup(char *options)
if (!*opt)
continue;
#ifdef CONFIG_MTRR
else if (!strncmp(opt, "mtrr:", 5))
mtrr = simple_strtoul(opt + 5, NULL, 0);
#endif
else if (!strncmp(opt, "fasttext:", 9))
fasttext = simple_strtoul(opt + 9, NULL, 0);
else

31
drivers/video/fbdev/vt8623fb.c
View file

@ -26,13 +26,9 @@
#include <linux/console.h> /* Why should fb driver call console functions? because console_lock() */
#include <video/vga.h>
#ifdef CONFIG_MTRR
#include <asm/mtrr.h>
#endif
struct vt8623fb_info {
char __iomem *mmio_base;
int mtrr_reg;
int wc_cookie;
struct vgastate state;
struct mutex open_lock;
unsigned int ref_count;
@ -99,10 +95,7 @@ static struct svga_timing_regs vt8623_timing_regs = {
/* Module parameters */
static char *mode_option = "640x480-8@60";
#ifdef CONFIG_MTRR
static int mtrr = 1;
#endif
MODULE_AUTHOR("(c) 2006 Ondrej Zajicek <[email protected]>");
MODULE_LICENSE("GPL");
@ -112,11 +105,8 @@ module_param(mode_option, charp, 0644);
MODULE_PARM_DESC(mode_option, "Default video mode ('640x480-8@60', etc)");
module_param_named(mode, mode_option, charp, 0);
MODULE_PARM_DESC(mode, "Default video mode e.g. '648x480-8@60' (deprecated)");
#ifdef CONFIG_MTRR
module_param(mtrr, int, 0444);
MODULE_PARM_DESC(mtrr, "Enable write-combining with MTRR (1=enable, 0=disable, default=1)");
#endif
/* ------------------------------------------------------------------------- */
@ -710,7 +700,7 @@ static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
info->fix.mmio_len = pci_resource_len(dev, 1);
/* Map physical IO memory address into kernel space */
info->screen_base = pci_iomap(dev, 0, 0);
info->screen_base = pci_iomap_wc(dev, 0, 0);
if (! info->screen_base) {
rc = -ENOMEM;
dev_err(info->device, "iomap for framebuffer failed\n");
@ -781,12 +771,9 @@ static int vt8623_pci_probe(struct pci_dev *dev, const struct pci_device_id *id)
/* Record a reference to the driver data */
pci_set_drvdata(dev, info);
#ifdef CONFIG_MTRR
if (mtrr) {
par->mtrr_reg = -1;
par->mtrr_reg = mtrr_add(info->fix.smem_start, info->fix.smem_len, MTRR_TYPE_WRCOMB, 1);
}
#endif
if (mtrr)
par->wc_cookie = arch_phys_wc_add(info->fix.smem_start,
info->fix.smem_len);
return 0;
@ -816,13 +803,7 @@ static void vt8623_pci_remove(struct pci_dev *dev)
if (info) {
struct vt8623fb_info *par = info->par;
#ifdef CONFIG_MTRR
if (par->mtrr_reg >= 0) {
mtrr_del(par->mtrr_reg, 0, 0);
par->mtrr_reg = -1;
}
#endif
arch_phys_wc_del(par->wc_cookie);
unregister_framebuffer(info);
fb_dealloc_cmap(&info->cmap);