The patch titled tridentfb: fix console freeze when switching from X11 has been removed from the -mm tree. Its filename was tridentfb-fix-console-freeze-when-switching-from-x11.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: tridentfb: fix console freeze when switching from X11 From: Krzysztof Helt <krzysztof.h1@xxxxx> This patch fixes two problems when acceleration is enabled: - console switch from the Xorg locks up the computer because the Xorg code locks some registers and disables the mmio mode, so reenable these in the tridentfb_set_par() and enable_mmio() - blacklist the Image975 chipset from setting PCI burst mode. This helps with random lock ups of the framebuffer on this chip. The same fix is probably needed for the Xorg as well. Signed-off-by: Krzysztof Helt <krzysztof.h1@xxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/video/tridentfb.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff -puN drivers/video/tridentfb.c~tridentfb-fix-console-freeze-when-switching-from-x11 drivers/video/tridentfb.c --- a/drivers/video/tridentfb.c~tridentfb-fix-console-freeze-when-switching-from-x11 +++ a/drivers/video/tridentfb.c @@ -558,13 +558,15 @@ static inline void write3CE(struct tride vga_mm_wgfx(par->io_virt, reg, val); } -static void enable_mmio(void) +static void enable_mmio(struct tridentfb_par *par) { /* Goto New Mode */ vga_io_rseq(0x0B); /* Unprotect registers */ vga_io_wseq(NewMode1, 0x80); + if (!is_oldprotect(par->chip_id)) + vga_io_wseq(Protection, 0x92); /* Enable MMIO */ outb(PCIReg, 0x3D4); @@ -578,6 +580,8 @@ static void disable_mmio(struct tridentf /* Unprotect registers */ vga_mm_wseq(par->io_virt, NewMode1, 0x80); + if (!is_oldprotect(par->chip_id)) + vga_mm_wseq(par->io_virt, Protection, 0x92); /* Disable MMIO */ t_outb(par, PCIReg, 0x3D4); @@ -995,6 +999,7 @@ static int tridentfb_set_par(struct fb_i vblankend /= 2; } + enable_mmio(par); crtc_unlock(par); write3CE(par, CyberControl, 8); tmp = 0xEB; @@ -1116,7 +1121,7 @@ static int tridentfb_set_par(struct fb_i if (!is_xp(par->chip_id)) write3X4(par, Performance, read3X4(par, Performance) | 0x10); /* MMIO & PCI read and write burst enable */ - if (par->chip_id != TGUI9440) + if (par->chip_id != TGUI9440 && par->chip_id != IMAGE975) write3X4(par, PCIReg, read3X4(par, PCIReg) | 0x06); vga_mm_wseq(par->io_virt, 0, 3); @@ -1403,7 +1408,7 @@ static int __devinit trident_pci_probe(s goto out_unmap1; } - enable_mmio(); + enable_mmio(default_par); /* setup framebuffer memory */ tridentfb_fix.smem_start = pci_resource_start(dev, 0); _ Patches currently in -mm which might be from krzysztof.h1@xxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html