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-rw-r--r--drivers/video/atafb.c7
-rw-r--r--drivers/video/atmel_lcdfb.c2
-rw-r--r--drivers/video/fbmem.c13
-rw-r--r--drivers/video/fsl-diu-fb.c14
-rw-r--r--drivers/video/i810/i810_main.c2
-rw-r--r--drivers/video/matrox/matroxfb_base.c3
-rw-r--r--drivers/video/matrox/matroxfb_crtc2.c5
-rw-r--r--drivers/video/mx3fb.c17
-rw-r--r--drivers/video/omap/omapfb_main.c4
-rw-r--r--drivers/video/platinumfb.c2
-rw-r--r--drivers/video/pxafb.c2
-rw-r--r--drivers/video/sh7760fb.c19
-rw-r--r--drivers/video/sis/sis_main.c2
-rw-r--r--drivers/video/sm501fb.c21
-rw-r--r--drivers/video/w100fb.c2
-rw-r--r--include/linux/fb.h1
16 files changed, 74 insertions, 42 deletions
diff --git a/drivers/video/atafb.c b/drivers/video/atafb.c
index 018850c116c..497ff8af03e 100644
--- a/drivers/video/atafb.c
+++ b/drivers/video/atafb.c
@@ -2414,7 +2414,10 @@ static int atafb_get_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
if (err)
return err;
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
- return fbhw->encode_fix(fix, &par);
+ mutex_lock(&info->mm_lock);
+ err = fbhw->encode_fix(fix, &par);
+ mutex_unlock(&info->mm_lock);
+ return err;
}
static int atafb_get_var(struct fb_var_screeninfo *var, struct fb_info *info)
@@ -2743,7 +2746,9 @@ static int atafb_set_par(struct fb_info *info)
/* Decode wanted screen parameters */
fbhw->decode_var(&info->var, par);
+ mutex_lock(&info->mm_lock);
fbhw->encode_fix(&info->fix, par);
+ mutex_unlock(&info->mm_lock);
/* Set new videomode */
ata_set_par(par);
diff --git a/drivers/video/atmel_lcdfb.c b/drivers/video/atmel_lcdfb.c
index 5afd64482f5..cb88394ba99 100644
--- a/drivers/video/atmel_lcdfb.c
+++ b/drivers/video/atmel_lcdfb.c
@@ -270,7 +270,9 @@ static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
smem_len = (var->xres_virtual * var->yres_virtual
* ((var->bits_per_pixel + 7) / 8));
+ mutex_lock(&info->mm_lock);
info->fix.smem_len = max(smem_len, sinfo->smem_len);
+ mutex_unlock(&info->mm_lock);
info->screen_base = dma_alloc_writecombine(info->device, info->fix.smem_len,
(dma_addr_t *)&info->fix.smem_start, GFP_KERNEL);
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index f8a09bf8d0c..53ea05645ff 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1310,8 +1310,6 @@ static long fb_compat_ioctl(struct file *file, unsigned int cmd,
static int
fb_mmap(struct file *file, struct vm_area_struct * vma)
-__acquires(&info->lock)
-__releases(&info->lock)
{
int fbidx = iminor(file->f_path.dentry->d_inode);
struct fb_info *info = registered_fb[fbidx];
@@ -1325,16 +1323,14 @@ __releases(&info->lock)
off = vma->vm_pgoff << PAGE_SHIFT;
if (!fb)
return -ENODEV;
+ mutex_lock(&info->mm_lock);
if (fb->fb_mmap) {
int res;
- mutex_lock(&info->lock);
res = fb->fb_mmap(info, vma);
- mutex_unlock(&info->lock);
+ mutex_unlock(&info->mm_lock);
return res;
}
- mutex_lock(&info->lock);
-
/* frame buffer memory */
start = info->fix.smem_start;
len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.smem_len);
@@ -1342,13 +1338,13 @@ __releases(&info->lock)
/* memory mapped io */
off -= len;
if (info->var.accel_flags) {
- mutex_unlock(&info->lock);
+ mutex_unlock(&info->mm_lock);
return -EINVAL;
}
start = info->fix.mmio_start;
len = PAGE_ALIGN((start & ~PAGE_MASK) + info->fix.mmio_len);
}
- mutex_unlock(&info->lock);
+ mutex_unlock(&info->mm_lock);
start &= PAGE_MASK;
if ((vma->vm_end - vma->vm_start + off) > len)
return -EINVAL;
@@ -1518,6 +1514,7 @@ register_framebuffer(struct fb_info *fb_info)
break;
fb_info->node = i;
mutex_init(&fb_info->lock);
+ mutex_init(&fb_info->mm_lock);
fb_info->dev = device_create(fb_class, fb_info->device,
MKDEV(FB_MAJOR, i), NULL, "fb%d", i);
diff --git a/drivers/video/fsl-diu-fb.c b/drivers/video/fsl-diu-fb.c
index f153c581cbd..0bf2190928d 100644
--- a/drivers/video/fsl-diu-fb.c
+++ b/drivers/video/fsl-diu-fb.c
@@ -750,24 +750,26 @@ static void update_lcdc(struct fb_info *info)
static int map_video_memory(struct fb_info *info)
{
phys_addr_t phys;
+ u32 smem_len = info->fix.line_length * info->var.yres_virtual;
pr_debug("info->var.xres_virtual = %d\n", info->var.xres_virtual);
pr_debug("info->var.yres_virtual = %d\n", info->var.yres_virtual);
pr_debug("info->fix.line_length = %d\n", info->fix.line_length);
+ pr_debug("MAP_VIDEO_MEMORY: smem_len = %u\n", smem_len);
- info->fix.smem_len = info->fix.line_length * info->var.yres_virtual;
- pr_debug("MAP_VIDEO_MEMORY: smem_len = %d\n", info->fix.smem_len);
- info->screen_base = fsl_diu_alloc(info->fix.smem_len, &phys);
+ info->screen_base = fsl_diu_alloc(smem_len, &phys);
if (info->screen_base == NULL) {
printk(KERN_ERR "Unable to allocate fb memory\n");
return -ENOMEM;
}
+ mutex_lock(&info->mm_lock);
info->fix.smem_start = (unsigned long) phys;
+ info->fix.smem_len = smem_len;
+ mutex_unlock(&info->mm_lock);
info->screen_size = info->fix.smem_len;
pr_debug("Allocated fb @ paddr=0x%08lx, size=%d.\n",
- info->fix.smem_start,
- info->fix.smem_len);
+ info->fix.smem_start, info->fix.smem_len);
pr_debug("screen base %p\n", info->screen_base);
return 0;
@@ -776,9 +778,11 @@ static int map_video_memory(struct fb_info *info)
static void unmap_video_memory(struct fb_info *info)
{
fsl_diu_free(info->screen_base, info->fix.smem_len);
+ mutex_lock(&info->mm_lock);
info->screen_base = NULL;
info->fix.smem_start = 0;
info->fix.smem_len = 0;
+ mutex_unlock(&info->mm_lock);
}
/*
diff --git a/drivers/video/i810/i810_main.c b/drivers/video/i810/i810_main.c
index 2e940199fc8..71960672d72 100644
--- a/drivers/video/i810/i810_main.c
+++ b/drivers/video/i810/i810_main.c
@@ -1090,8 +1090,10 @@ static int encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info)
memset(fix, 0, sizeof(struct fb_fix_screeninfo));
strcpy(fix->id, "I810");
+ mutex_lock(&info->mm_lock);
fix->smem_start = par->fb.physical;
fix->smem_len = par->fb.size;
+ mutex_unlock(&info->mm_lock);
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
fix->xpanstep = 8;
diff --git a/drivers/video/matrox/matroxfb_base.c b/drivers/video/matrox/matroxfb_base.c
index 8e7a275df50..59c3a2e1491 100644
--- a/drivers/video/matrox/matroxfb_base.c
+++ b/drivers/video/matrox/matroxfb_base.c
@@ -724,8 +724,10 @@ static void matroxfb_update_fix(WPMINFO2)
struct fb_fix_screeninfo *fix = &ACCESS_FBINFO(fbcon).fix;
DBG(__func__)
+ mutex_lock(&ACCESS_FBINFO(fbcon).mm_lock);
fix->smem_start = ACCESS_FBINFO(video.base) + ACCESS_FBINFO(curr.ydstorg.bytes);
fix->smem_len = ACCESS_FBINFO(video.len_usable) - ACCESS_FBINFO(curr.ydstorg.bytes);
+ mutex_unlock(&ACCESS_FBINFO(fbcon).mm_lock);
}
static int matroxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
@@ -2081,6 +2083,7 @@ static int matroxfb_probe(struct pci_dev* pdev, const struct pci_device_id* dumm
spin_lock_init(&ACCESS_FBINFO(lock.accel));
init_rwsem(&ACCESS_FBINFO(crtc2.lock));
init_rwsem(&ACCESS_FBINFO(altout.lock));
+ mutex_init(&ACCESS_FBINFO(fbcon).mm_lock);
ACCESS_FBINFO(irq_flags) = 0;
init_waitqueue_head(&ACCESS_FBINFO(crtc1.vsync.wait));
init_waitqueue_head(&ACCESS_FBINFO(crtc2.vsync.wait));
diff --git a/drivers/video/matrox/matroxfb_crtc2.c b/drivers/video/matrox/matroxfb_crtc2.c
index 7ac4c5f6145..909e10a1189 100644
--- a/drivers/video/matrox/matroxfb_crtc2.c
+++ b/drivers/video/matrox/matroxfb_crtc2.c
@@ -289,13 +289,16 @@ static int matroxfb_dh_release(struct fb_info* info, int user) {
#undef m2info
}
-static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info) {
+static void matroxfb_dh_init_fix(struct matroxfb_dh_fb_info *m2info)
+{
struct fb_fix_screeninfo *fix = &m2info->fbcon.fix;
strcpy(fix->id, "MATROX DH");
+ mutex_lock(&m2info->fbcon.mm_lock);
fix->smem_start = m2info->video.base;
fix->smem_len = m2info->video.len_usable;
+ mutex_unlock(&m2info->fbcon.mm_lock);
fix->ypanstep = 1;
fix->ywrapstep = 0;
fix->xpanstep = 8; /* TBD */
diff --git a/drivers/video/mx3fb.c b/drivers/video/mx3fb.c
index b7af5256e88..567fb944bd2 100644
--- a/drivers/video/mx3fb.c
+++ b/drivers/video/mx3fb.c
@@ -669,7 +669,7 @@ static uint32_t bpp_to_pixfmt(int bpp)
}
static int mx3fb_blank(int blank, struct fb_info *fbi);
-static int mx3fb_map_video_memory(struct fb_info *fbi);
+static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len);
static int mx3fb_unmap_video_memory(struct fb_info *fbi);
/**
@@ -742,8 +742,7 @@ static int mx3fb_set_par(struct fb_info *fbi)
if (fbi->fix.smem_start)
mx3fb_unmap_video_memory(fbi);
- fbi->fix.smem_len = mem_len;
- if (mx3fb_map_video_memory(fbi) < 0) {
+ if (mx3fb_map_video_memory(fbi, mem_len) < 0) {
mutex_unlock(&mx3_fbi->mutex);
return -ENOMEM;
}
@@ -1198,6 +1197,7 @@ static int mx3fb_resume(struct platform_device *pdev)
/**
* mx3fb_map_video_memory() - allocates the DRAM memory for the frame buffer.
* @fbi: framebuffer information pointer
+ * @mem_len: length of mapped memory
* @return: Error code indicating success or failure
*
* This buffer is remapped into a non-cached, non-buffered, memory region to
@@ -1205,23 +1205,26 @@ static int mx3fb_resume(struct platform_device *pdev)
* area is remapped, all virtual memory access to the video memory should occur
* at the new region.
*/
-static int mx3fb_map_video_memory(struct fb_info *fbi)
+static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len)
{
int retval = 0;
dma_addr_t addr;
fbi->screen_base = dma_alloc_writecombine(fbi->device,
- fbi->fix.smem_len,
+ mem_len,
&addr, GFP_DMA);
if (!fbi->screen_base) {
dev_err(fbi->device, "Cannot allocate %u bytes framebuffer memory\n",
- fbi->fix.smem_len);
+ mem_len);
retval = -EBUSY;
goto err0;
}
+ mutex_lock(&fbi->mm_lock);
fbi->fix.smem_start = addr;
+ fbi->fix.smem_len = mem_len;
+ mutex_unlock(&fbi->mm_lock);
dev_dbg(fbi->device, "allocated fb @ p=0x%08x, v=0x%p, size=%d.\n",
(uint32_t) fbi->fix.smem_start, fbi->screen_base, fbi->fix.smem_len);
@@ -1251,8 +1254,10 @@ static int mx3fb_unmap_video_memory(struct fb_info *fbi)
fbi->screen_base, fbi->fix.smem_start);
fbi->screen_base = 0;
+ mutex_lock(&fbi->mm_lock);
fbi->fix.smem_start = 0;
fbi->fix.smem_len = 0;
+ mutex_unlock(&fbi->mm_lock);
return 0;
}
diff --git a/drivers/video/omap/omapfb_main.c b/drivers/video/omap/omapfb_main.c
index 060d72fe57c..4ea99bfc37b 100644
--- a/drivers/video/omap/omapfb_main.c
+++ b/drivers/video/omap/omapfb_main.c
@@ -393,8 +393,10 @@ static void set_fb_fix(struct fb_info *fbi)
rg = &plane->fbdev->mem_desc.region[plane->idx];
fbi->screen_base = rg->vaddr;
+ mutex_lock(&fbi->mm_lock);
fix->smem_start = rg->paddr;
fix->smem_len = rg->size;
+ mutex_unlock(&fbi->mm_lock);
fix->type = FB_TYPE_PACKED_PIXELS;
bpp = var->bits_per_pixel;
@@ -886,8 +888,10 @@ static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
* plane memory is dealloce'd, the other
* screen parameters in var / fix are invalid.
*/
+ mutex_lock(&fbi->mm_lock);
fbi->fix.smem_start = 0;
fbi->fix.smem_len = 0;
+ mutex_unlock(&fbi->mm_lock);
}
}
}
diff --git a/drivers/video/platinumfb.c b/drivers/video/platinumfb.c
index 03b3670130a..bacfabd9ce1 100644
--- a/drivers/video/platinumfb.c
+++ b/drivers/video/platinumfb.c
@@ -141,7 +141,9 @@ static int platinumfb_set_par (struct fb_info *info)
offset = 0x10;
info->screen_base = pinfo->frame_buffer + init->fb_offset + offset;
+ mutex_lock(&info->mm_lock);
info->fix.smem_start = (pinfo->frame_buffer_phys) + init->fb_offset + offset;
+ mutex_unlock(&info->mm_lock);
info->fix.visual = (pinfo->cmode == CMODE_8) ?
FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_DIRECTCOLOR;
info->fix.line_length = vmode_attrs[pinfo->vmode-1].hres * (1<<pinfo->cmode)
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 0889d50c328..6506117c134 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -815,8 +815,10 @@ static int overlayfb_map_video_memory(struct pxafb_layer *ofb)
ofb->video_mem_phys = virt_to_phys(ofb->video_mem);
ofb->video_mem_size = size;
+ mutex_lock(&ofb->fb.mm_lock);
ofb->fb.fix.smem_start = ofb->video_mem_phys;
ofb->fb.fix.smem_len = ofb->fb.fix.line_length * var->yres_virtual;
+ mutex_unlock(&ofb->fb.mm_lock);
ofb->fb.screen_base = ofb->video_mem;
return 0;
}
diff --git a/drivers/video/sh7760fb.c b/drivers/video/sh7760fb.c
index 653bdfee305..9f6d6e61f0c 100644
--- a/drivers/video/sh7760fb.c
+++ b/drivers/video/sh7760fb.c
@@ -120,18 +120,6 @@ static int sh7760_setcolreg (u_int regno,
return 0;
}
-static void encode_fix(struct fb_fix_screeninfo *fix, struct fb_info *info,
- unsigned long stride)
-{
- memset(fix, 0, sizeof(struct fb_fix_screeninfo));
- strcpy(fix->id, "sh7760-lcdc");
-
- fix->smem_start = (unsigned long)info->screen_base;
- fix->smem_len = info->screen_size;
-
- fix->line_length = stride;
-}
-
static int sh7760fb_get_color_info(struct device *dev,
u16 lddfr, int *bpp, int *gray)
{
@@ -334,7 +322,8 @@ static int sh7760fb_set_par(struct fb_info *info)
iowrite32(ldsarl, par->base + LDSARL); /* mem for lower half of DSTN */
- encode_fix(&info->fix, info, stride);
+ info->fix.line_length = stride;
+
sh7760fb_check_var(&info->var, info);
sh7760fb_blank(FB_BLANK_UNBLANK, info); /* panel on! */
@@ -435,6 +424,8 @@ static int sh7760fb_alloc_mem(struct fb_info *info)
info->screen_base = fbmem;
info->screen_size = vram;
+ info->fix.smem_start = (unsigned long)info->screen_base;
+ info->fix.smem_len = info->screen_size;
return 0;
}
@@ -520,6 +511,8 @@ static int __devinit sh7760fb_probe(struct platform_device *pdev)
info->var.transp.length = 0;
info->var.transp.msb_right = 0;
+ strcpy(info->fix.id, "sh7760-lcdc");
+
/* set the DON2 bit now, before cmap allocation, as it will randomize
* palette memory.
*/
diff --git a/drivers/video/sis/sis_main.c b/drivers/video/sis/sis_main.c
index 7072d19080d..fd33455389b 100644
--- a/drivers/video/sis/sis_main.c
+++ b/drivers/video/sis/sis_main.c
@@ -1847,8 +1847,10 @@ sisfb_get_fix(struct fb_fix_screeninfo *fix, int con, struct fb_info *info)
strcpy(fix->id, ivideo->myid);
+ mutex_lock(&info->mm_lock);
fix->smem_start = ivideo->video_base + ivideo->video_offset;
fix->smem_len = ivideo->sisfb_mem;
+ mutex_unlock(&info->mm_lock);
fix->type = FB_TYPE_PACKED_PIXELS;
fix->type_aux = 0;
fix->visual = (ivideo->video_bpp == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
diff --git a/drivers/video/sm501fb.c b/drivers/video/sm501fb.c
index eb5d73a0670..98f24f0ec00 100644
--- a/drivers/video/sm501fb.c
+++ b/drivers/video/sm501fb.c
@@ -145,7 +145,7 @@ static inline void sm501fb_sync_regs(struct sm501fb_info *info)
#define SM501_MEMF_ACCEL (8)
static int sm501_alloc_mem(struct sm501fb_info *inf, struct sm501_mem *mem,
- unsigned int why, size_t size)
+ unsigned int why, size_t size, u32 smem_len)
{
struct sm501fb_par *par;
struct fb_info *fbi;
@@ -172,7 +172,7 @@ static int sm501_alloc_mem(struct sm501fb_info *inf, struct sm501_mem *mem,
if (ptr > 0)
ptr &= ~(PAGE_SIZE - 1);
- if (fbi && ptr < fbi->fix.smem_len)
+ if (fbi && ptr < smem_len)
return -ENOMEM;
break;
@@ -197,7 +197,7 @@ static int sm501_alloc_mem(struct sm501fb_info *inf, struct sm501_mem *mem,
case SM501_MEMF_ACCEL:
fbi = inf->fb[HEAD_CRT];
- ptr = fbi ? fbi->fix.smem_len : 0;
+ ptr = fbi ? smem_len : 0;
fbi = inf->fb[HEAD_PANEL];
if (fbi) {
@@ -413,6 +413,7 @@ static int sm501fb_set_par_common(struct fb_info *info,
unsigned int mem_type;
unsigned int clock_type;
unsigned int head_addr;
+ unsigned int smem_len;
dev_dbg(fbi->dev, "%s: %dx%d, bpp = %d, virtual %dx%d\n",
__func__, var->xres, var->yres, var->bits_per_pixel,
@@ -453,18 +454,20 @@ static int sm501fb_set_par_common(struct fb_info *info,
/* allocate fb memory within 501 */
info->fix.line_length = (var->xres_virtual * var->bits_per_pixel)/8;
- info->fix.smem_len = info->fix.line_length * var->yres_virtual;
+ smem_len = info->fix.line_length * var->yres_virtual;
dev_dbg(fbi->dev, "%s: line length = %u\n", __func__,
info->fix.line_length);
- if (sm501_alloc_mem(fbi, &par->screen, mem_type,
- info->fix.smem_len)) {
+ if (sm501_alloc_mem(fbi, &par->screen, mem_type, smem_len, smem_len)) {
dev_err(fbi->dev, "no memory available\n");
return -ENOMEM;
}
+ mutex_lock(&info->mm_lock);
info->fix.smem_start = fbi->fbmem_res->start + par->screen.sm_addr;
+ info->fix.smem_len = smem_len;
+ mutex_unlock(&info->mm_lock);
info->screen_base = fbi->fbmem + par->screen.sm_addr;
info->screen_size = info->fix.smem_len;
@@ -637,7 +640,8 @@ static int sm501fb_set_par_crt(struct fb_info *info)
if ((control & SM501_DC_CRT_CONTROL_SEL) == 0) {
/* the head is displaying panel data... */
- sm501_alloc_mem(fbi, &par->screen, SM501_MEMF_CRT, 0);
+ sm501_alloc_mem(fbi, &par->screen, SM501_MEMF_CRT, 0,
+ info->fix.smem_len);
goto out_update;
}
@@ -1289,7 +1293,8 @@ static int sm501_init_cursor(struct fb_info *fbi, unsigned int reg_base)
par->cursor_regs = info->regs + reg_base;
- ret = sm501_alloc_mem(info, &par->cursor, SM501_MEMF_CURSOR, 1024);
+ ret = sm501_alloc_mem(info, &par->cursor, SM501_MEMF_CURSOR, 1024,
+ fbi->fix.smem_len);
if (ret < 0)
return ret;
diff --git a/drivers/video/w100fb.c b/drivers/video/w100fb.c
index d0674f1e3f1..8a141c2c637 100644
--- a/drivers/video/w100fb.c
+++ b/drivers/video/w100fb.c
@@ -523,6 +523,7 @@ static int w100fb_set_par(struct fb_info *info)
info->fix.ywrapstep = 0;
info->fix.line_length = par->xres * BITS_PER_PIXEL / 8;
+ mutex_lock(&info->mm_lock);
if ((par->xres*par->yres*BITS_PER_PIXEL/8) > (MEM_INT_SIZE+1)) {
par->extmem_active = 1;
info->fix.smem_len = par->mach->mem->size+1;
@@ -530,6 +531,7 @@ static int w100fb_set_par(struct fb_info *info)
par->extmem_active = 0;
info->fix.smem_len = MEM_INT_SIZE+1;
}
+ mutex_unlock(&info->mm_lock);
w100fb_activate_var(par);
}
diff --git a/include/linux/fb.h b/include/linux/fb.h
index dd68358996b..f847df9e99b 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -819,6 +819,7 @@ struct fb_info {
int node;
int flags;
struct mutex lock; /* Lock for open/release/ioctl funcs */
+ struct mutex mm_lock; /* Lock for fb_mmap and smem_* fields */
struct fb_var_screeninfo var; /* Current var */
struct fb_fix_screeninfo fix; /* Current fix */
struct fb_monspecs monspecs; /* Current Monitor specs */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-23 15:09:15 +0000